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Product - Accessory

Product - FC-PAL35

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Product - PAL8150

Product - PAL8942

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Product - Passive Heat Sink

Product - S-PAL8952

Question and Answer

Tyan motherboard, the S1854 Trinity 400
Question
I recently purchased a Tyan motherboard, the S1854 Trinity 400. I've also purchased a 1GHz PIII processor to install in this system, but the heatsink that came with the processor doesn't fit in the area of the 370 socket. The tech folks at Tyan say that you have a cooling solution that will work for me, but I can't find anything on your website that I am certain will work. Any help you can provide would be greatly appreciated.
Answer
The PAL6035 will work just fine on this board.
http://www.alphanovatech.com/c_pale.html
It can be purchased from one of our resellers:
http://www.micforg.co.jp/en/resellerlist.html

attaching a UB40-15B to a BGA with full Copper Heat spreader
Question
What methods do you suggest for attaching a UB40-15B to a BGA with full Copper Heat spreader? BGA with Heat Slug? Also if you suggest thermal tape do you offer it with the heat sink?
Answer
If the chip has a full sized copper heat spreader, then thermal tape
can be used if there are no provisions for mechanical mounting. If the contact slug is copper, or any other metal or ceramic, a very high performace thermal tape can be used. There are other tapes, whcich can be used for plastic packages, although the thermal performance is somewhat lower.
We would be happy to offer the heat sinks with pre-applied thermal tape to your specifications. Please feel free to contact us directly for this type of inquiry.
http://www.micforg.co.jp/en/contacte.html

CL57G2T is a clip for PAL6035/Tualatin
Question
Hello, Is there an original Alpha clip for mounting the PAL6035 heatsink on Tualatin CPUs? I found this ... http://phamcomputer.safeshopper.com/28/467.htm?492 ... clip with the serial number CL57G2T. However, I cannot find that clip on the Alpha pages. Could you please verify that this part is an original Alpha part or recommend another clip for PAL6035/Tualatin?
Answer
Yes, the clip can be used for PAL6035/Tualatin.
We update the web page:
http://www.micforg.co.jp/en/c_acce.html

100 LED's choose a heat sink
Question
I have about 100 LED's and I want to choose a heat sink. I have measured the temperature difference (Tj-Tc) and the power dissipated by the Leds. I got a resistance of about 28 (Temp. diff. /power dissipation). Could you please give more information about choosing a suitable heat sink?? The area of the my plate is 56mm x 27mm, and power dissipation is about 12 Watt.
Answer
We would need to know the max allowable temperature of the LEDs
and the max local ambient.
For example, if the LEDs can operate up to 100C, and the max local ambient
is 50C, and the total power dissipation is 12Watt, then we could arrive
at the following thermal resistnce target:
100-50/12 50/12 = 4.17 degC/Watt (Obviously your number would be different
depending on the specs for the LEDs and your system.
From this number, we can begin to look at heat sinks. A good place to start
would be the W60 series:
http://www.alphanovatech.com/c_w60e.html
We could easily machine it to your size.
Once again, we would need the specifications for the LEDs and your max
local ambient temperature.

Slot-A Athlon Heat Sink
Question
Searched for: Slot-A Athlon Heatsink And Slot A athlon heatsink. No results found for those. I need to know what heatsink is good for my Slot-A Athlon 800Mhz CPU. And if anything els is required for it to operate properly such as heat conductive grease or tape just for example. Thanks Tsunami
Answer
The P7125 or P612H35 are the heat sinks for Slot-A Athlon.
For details, please visit our web site at:
http://www.micforg.co.jp/en/cat_pf2e.html
You must use thermal inteface, which can be purchased
from our resellers.
Several of our resellers carry these items:
http://www.1coolpc.com/alphak7ho.htm
(2003.01.29)

Heat Sink for dual xeon 2.66 Ghz (533 FSB) system
Question
I have a dual xeon 2.66 Ghz (533 FSB) system. What is the Alpha heat sink part number for the above cpu? Also copper only please.
Answer
We have two types of Xeon Heat Sinks are in production. They are not all copper, but copper embedded aluminum heat sink:
1. Passive Heat Sink for 1U system
U6489C-23AN is in production
2. Active Heat Sink for 2U system
PAL6489-25M63 or PAL6489-35UM63 are in production
For product detail, please contact us.

Z40-9.5BMT for Broadcom chip
Question
I have a Broadcom demo board with the following heatsink installed: Z40-9.5BMT I can find the Z40-9.5B datasheet on your website, but what does the "MT" mean ?
Answer
This is a custom designed heat sink.
Please contact us directly.

Heat Sink for Motorola MPC7410 CBGA package
Question
What Heat Sink could you recommend for the Motorola MPC7410 CBGA package?
Answer
This would depend on the application. Please contact our
office in Santa Clara, CA for more information.
408-567-8082

Does the Alpha PAL8045 fit on Athlon64 motherboards?
Question
Does the Alpha PAL8045 fit on Athlon64 motherboards?
Answer
No, the PAL8045 is not for Athlon64 or Opteron processors, only
socket 462/A Athlon processors. We have new heat sinks coming out
shortly for the Athlon64/Opterons. (2003.09.26)

upgrade all of the heatsinks in my XBox
Question
I would like to upgrade all of the heatsinks in my XBox. I would like passive heat sinks that will function well in the somewhat improved but still limited airflow. I need heatsinks for the CPU 70x60x35mm and the GPU 51x43x25mm (LxWxH). I don't know which of your pin or fin patterns would be best for the application so anything you would suggest would be helpfull. Thank you.
Answer
For limited airflow applications, we have a LPD, "low pressure drop" series:
http://www.alphanovatech.com/cat_pass.html#LPD_Series
We are not familiar with the heat sink attachment methods in use on the XBox, but we do offer thermal adhesive tapes that could be used. If you wish to
purchase any of the heat sinks from the LPD, or any other series, please contact
sales@alphanovatech.com

Heat Sink for QUALCOMM chip(Alpha PN#Z35-9.5BM-T412-20/S03YZZ02)
Question
Could I get a Heatsink data sheet for part# Z35-9.5BM-T412-20. QUALCOMM is customized this heat sink to remove a row of fins for the attachment clip, and the Alpha part# is S03YZZ02.
Answer
The parts number is a semi-custom parts.
We make many custom/semi-custom parts for any quantity.

Please feel free to contact us for the specification and quotation.

Email: sales@alphanovatech.com

Heat Sink PN# 50SQ38H25 & 54SQ54H35 for Nichia Corporation LED
Question
Could I get a Heatsink data sheet for Heat sink B: 50SQ38H25 and Heat sink C: 54SQ54H35 described in the document of Nichia Kagaku Kogyo(http://www.nichia.co.jp/specification/en/product/led/NC4U13x_uv_thermal_application_note.pdf).
Answer
* Heat sink C : 54SQ54H35
The "Heat Sink-C Product# 54SQ54H35" is not one of our
standard part numbers.
However, from the specification and photo, we believe that this
item is based on our standard LPD54-30B heat sink:
(http://www.micforg.co.jp/jp/c_lpd54.html)

We can add mounting holes or threaded holes to any of our
standard heat sinks. Customers can specify the hole locations
using our Online Heat Sink Customization tool.
(http://www.micforg.co.jp/en/customadde.html)

If you want to purchase the exact same product as specified in Nichia's
specification, we would recommend that you to contact Nichia Kagaku Kogyo.

* Heat sink B : 50SQ38H25
Although the picture in the Nichia document does not actually
show a heat sink based on one of our standard
heat sinks, we do manufacture a very similar product.
Our LPD50-25B series could be used to create a
compatible heat sink:
(http://www.micforg.co.jp/en/c_lpd50e.html)
Just like the 54SQ54H35 heat sink, this heat sink can
be changed, including the heat sink size, using our
online customization tool.

If you have any questions, please contact Alpha Sales.

Air direction: Air pushing or Air pulling
Question
Which type of fan heat sink is better, "air pushing" or "air pulling"?
Answer
According to our tests, the induction type(air pulling) showed better results the the expulsion type(air pushing). This is because we used an intake cover to draw air through the lower part of the heat sink for more heat dissipation from the lower part of the fins. However, if some other heat source is located near the heat sink, heated air would come into the heat sink and affect the thermal performance, so the choice must be made depending on the environment.

Will the heat sink work without a fan?
Question
Will the heat sink work without a fan?
Answer
The cooling capacity of a heat sink varies depending on the condition of the air surrounding it (in the machine). The speed of the air flow and the force with which it flows at the heat sink are important points in determining heat sink performance. In selecting a heat sink, various factors such as space limitations and air flow need to be considered. For more information on selecting a heat sink, see the Online Catolog and Selecting a Heat Sink.

Spiral Heat Sink
Question
I would like to buy a spiral type heat sink.
Answer
These heat sinks were developed for a special application and they are not for general sale. Under most conditions these heats sinks have a high pressure drop (air flow is poor) and their performance is not very good.

Black anodize or Clear Anodize?
Question
Which give better performance, black anodized or clear anodized heat sinks?
Answer
The results of our tests show that when air velocity is low (0.5m/s) black anodized is better. This is thought to be because the black color dissipates more radiant heat. However, if some other heat source is located near the heat sink, the black color will conversely easily absorb radiant heat, so the choice must be made depending on the environment

barrel nuts that act as spacers
Question
i have a motherboard and a cpu module that i'm mounting in a custom case. I need some 1/4 inch barrel nuts that act as spacers and lets me screw into either side
Answer
We apologize, but we can not assist you with these items. We only sell heat sinks and heat sink related items.

identify the model by its dimensions
Question
I bought two years ago one of your heatsinks of the PAL series, but I can not remember by chance which model I bought. Is there any chance to identify the model by its dimensions (in metric measures). The main problem: I am offered a faster Athlon processor (~ 1.2 GHz), so I would like to know if my current Heatsink with my additional to case fans is still sufficent or do I need a "bigger" heatsink?
Answer
Yes, if you were to give us the dimensions, we could
determine the model number.
Also, please let us know the new processor you plan to use and
we can determine if it can handle the new processor.

Round Pin fin heat sink
Question
Do you have circular pin fin heat sinks?
Answer
We have some custom round pin fin heat sinks and
a standard product(P12052R-xxB). Please see the
detail information at here:
http://www.alphanovatech.com/c_p52120re.html

heatsinks that will work for videocard ram.
Question
Looking for heatsinks that will work for videocard ram. Radeon 9800 pro 128 mb of ram. Planning to install a Zalman zm80c-hp and zmop1 fan. Pimping out my rig, Currently using your 8942 on my highly overclocked p4 3.02 533 processor I love your heatsinks and recomend them to all overclockers not using water, nitrogen or phase change... You should put out vpu heatsinks and waterblocks. You make excellent product.
Answer
Several of our resellers make video ram sinks from our standard series
heat sinks. Here are links to their sites:
http://2cooltek.safeshopper.com/51/cat51.htm?600
http://2cooltek.safeshopper.com/51/394.htm?864
http://www.1coolpc.com/

what aluminum (ASTM grade)
Question
what aluminum material is used for the extrusions (ASTM grade) what anodized finish is applied (ASTM)
Answer
We use A6063 Aluminum. ASTM-B-221 QQ-A-200/9
Our anodize is typically black or clear per Mil-A-8625F
(2004.03.22)

silpad 1000
Question
Is the silpad 1000 a date-sensitive material? If so, how long can it be in stock before it expires?
Answer
Silpad is thermal product manufactured by Bergquist. Although it
is specified into some of our custom heat sinks, we recommend contacting
Bergquist directly regarding technical questions about their products.
http://www.bergquistcompany.com/tm_sil_pad_list.cfm

specifications for Delta AFB0812SH
Question
Hello, can you send me specifications for the fan that comes with your PAL 8045 HSF? The model number is Delta AFB0812SH
Answer
Here is a link to our fan specifications.
The fan you are referencing is the the M81.
http://www.alphanovatech.com/c_acce.html#fan

PAL8942M81 Mean-time-between-failure-rate(MTBF)
Question
We are using your company's PAL8942M81 heatsink with fan in our project. We need its Mean-time-between-failure-rate(MTBF). Can you supply us this rate or can you supply if you calculated MTBF for your similar product?
Answer
The MTBF for this fan is 70,000 minimum at 40 degrees C.
This is based on Delta's Fan Life Test Report.
(2004.03.31)

What is the thermal impedance of BP105
Question
I am using heatsinks of the UB type. I buy it with the Adhesive tehrmal pad (/BP105 option on the part number). What is the thermal impedance of this pad?
Answer
At 10 psi, the Thermal Impedance is .78 DegC-in(square)/Watt.
The complete data sheet for this product is located here:
http://www.bergquistcompany.com/objects/data_sheets/PDS_Bond_Ply_100_PDF.pdf
(2004.03.31)

I do own an Alpha FC-PAL 35 cooler!
Question
I do own an Alpha FC-PAL 35 cooler! What CPUs can it be used for? Up to which CPU speed may it be used? Is it ok for an Athlon XP 1800? Thank you!
Answer
The FC-PAL 35 is no longer in production. This heat sink is only for
use on FC-PGA Intel chips Pentium/Celeron. It is OK for all current
speeds of Intel FC-PGA processors.
However, it is NOT for Atlon processors. There are four nylon feet embedded
in the base of the heat sink, to stabilize it on the small Pentium die. Athlon processors have four padded feet on the chip itself. If the FC-PAL heat sink is
placed on the Athlon processor, the nylon feet will contact the padded fett,
preventing contact with the die. Obviously, this will cause the die to overheat and burn itself out. It is possible to pull out the nylon feet.
If this is done, it would be acceptable to use the FC-PAL on an Athlon chip.
For Athlons, we recommend the use of the PAL series of heat sinks, NOT THE FC-PAL. The PAL series includes, the PAL6035, PAL8045, and PAL153(for 1U rackmounts). Please refer to our online catalog for more information on these products:
http://www.alphanovatech.com/cindex5e.html

Intake cover for PAL153
Question
I have a pal 153 heatsink that I would like to buy an intake cover for. I think it is either part number ct 6016 or ct 6011. Which one would fit, and where can I buy just the intake cover? Thanks
Answer
There is no intake cover for PAL153, as this heat sink
is very short. The heat sink height is only 15mm,
and 6016 or 6011 intake cover would close the air flow
path.
(2003.01.29)

upgrade the CPU heatsink in my Xbox to a PAL153U
Question
I want to upgrade the CPU heatsink (Unidirectional) in my Xbox to a PAL153U Can be seen here http://lib1.store.vip.sc5.yahoo.com/lib/directron/replacexboxmb04.jpg The current dimensions are 70mm Long x 60 mm wide and 35 mm tall There is a 70mm fan mounted directly behind the heatsink (10mm away) blowing air out of the case. In this situation would it be better to have the PAL153U pushing or pulling air Away/towards the heatink? And would this cooler be better or worse then the stock one? I understand this voids my warranty from microsoft.
Answer
The PAL153U should work since it is designed for PIII processors. I am not sure if it will outperform the stock cooler. My guess is that it would since it has a copper embedded base, and a high speed 60x10mm fan right on the dense pin fin pattern. If there is limited space above the PAL153U, then definitely set the fan to pull and exhaust through the top. If there is a lot of space(10mm or more), then set the fan to push.
The stock heat sink appears to be a a very sparse, unducted aluminum extrusion. This fits in with the design philosophy of providing a quiet product. Although I believe that the PAL153U would outperform it, it would definitely add some noise to your XBOX. We would be interested to see how this works out.
(2004.03.22)

Alpha PAL 6035 Silent (YS-Tech) sufficient for a 1300 MhZ AMD Dur
Question
Is your cooler Alpha PAL 6035 Silent (YS-Tech) sufficient for a 1300 MhZ AMD Duron processor ?
Answer
Even with the low speed Sanyo Denki fan, the PAL6035MUC has a thermal resistance of .37 degC/Watt. The YS Tech fan is rated for higher airflow, so the performance would be even better. The 1300 Duron puts out 60 Watts Max. So, 60 x .37 = 22.2 degC rise above ambient. The 1300 Druon is rated for a max die temperature of 90 degC. So, 90 - 22.2 = 67.8 degC max local ambient. So, the PAL6035 would be more than sufficient for your processor.

Pal6035, cpu compatibility 2700+ ?
Question
Pal6035, cpu compatibility with different Athlon XP 2000+, 2200+, 2400+, 2600+, 2700+ ?
Answer
The PAL6035 would be fine for all of the listed Athlons. The thermal resistance
of the PAL6035MUC, even with the quiet Sanyo Denki fan, is .37 degC/Watt.
For example, the worst case 2700+ puts out 68.3Watts, with a max Die
temperature of 85C. So, assuming a max heat sink inlet of 45C(which a desktop
system should rarely see), 85-45= 40C max temperature rise. 40/68.3=
.56 degC/Wat thermal resistance target. Even if we lower the max Die temp
to 70C instead of 85C, the target would be 70-45= 25/68.3= .37degC/Watt. So,
there is plenty of margin.

PAL6030MUC AMD XP2000+
Question
Could you please tell me what is the limit (processor)for cooler ALPHA PAL6030MUC. I have AMD XP1500+ but I'm planning to upgrade to AMD XP2000+ so what temperature can I except.
Answer
Even with the quiet Sanyo Denki fan, the PAL6035MUC has a thermal
resistance of .39 degC/Watt. Depending upon which 2000+ you purchase,
it will put out between 60.3 and 70.0 Watts max. It depends upn
Model 6, Model 8 and stepping.
In the worst case, under Max load, the rise above ambient temperature
would be 27.3 degrees C, for the 70 Watt chip. AMD specs the chips up to
85C, so as long as the air temperature inside your computer is below
57.7 degC (85-26), your chip should be fine.
(2003.1.29)

Alpha PAL 6035 with a Titan Aluminium Cooler 60mm
Question
I want to buy me an Alpha PAL 6035 with a Titan Aluminium Cooler 60mm. But the guys from Titan did not know if I can screw the Cooler on the PAL 6035 because the distance from the screwholes is 50mm. Is it working or not?
Answer
The original screws included with the PAL6035 are M3-65mm. They are made for
any 25mm thick fan. If you use a shorter fan, like 10mm thick, you will need
to use shorter screws. If the Titan fan is only 10mm thick, you will need
to use M3-50mm screws. If you can not find them, you can order them from
us.
Please send and email to:
sales@alphanovatech.com
Please mention the details of this email and we will respond.
(2003.02.13)

PAL6035MUC work on a Apple Desktop Beige G3
Question
Will the PAL6035MUC work on a Apple Desktop Beige G3. The ZIF socket does not fit a normal Socket A or 370 heatsink. Thanks in advance. Current CPU: G3 266.
Answer
Unfortunately, we have no data regarding Apple G3 heat sink
specifications. We would have to adivse against using this heat
sink for this application.
(2003.01.29)

PAL6035 for a AMD Athlon XP200+
Question
I recently bought a Alpha PAL6035 for a AMD Athlon XP200+ and the temperature of the CPU is 60/62C. I did a long research before choosing this heatsink witch one is I think excelent but I was hoping a temperature of 40/45C. Did I do something wrong when I installed it, or is it possible to change the size of the fan, or add a case fan? Is the PAL8045 better for this type CPU? I just would like to know what to do to put the temp of my CPU to about 40C. Thanks
Answer
The PAL6035MUC, with the quiet Sanyo Denki fan has a
thermal resistance of .37 DegC/Watt. Your XP2000+
puts out 61.3 Watts. So .37 x 61.3 = 23 degC temp
rise above ambient. 62-23= 39C expected ambient.
If you local ambient(temperature of the air going into
the heat sink) is around 39 C, then the 60/62C temperatures
are correct. If they are lower than 39C, then, yes, something
is wrong. You can always change the fan on the heat sink to
something more powerful, which would lower your temperatures.
Obviously the PAL8045 would provide lower temperatures due to
its superior cooling ability. I would expect a drop of approximately
5-6 degrees C by swithcing to this heat sink over the PAL6035.
Once again, the local ambient temperature has a huge impact on the
temperature of your processor, so adding more case fans may help
to lower the temperatures.

PAL6035 w/ Delta 38 cfm fan/ Air Blow or Air Pull ?
Question
Hi i have a ALPHA PAL6035-A with a Delta 38 cfm fan. Should the fan blow air at the heatsink or suck the air away from the heatsink for best cooling .
Answer
We did not test our heat sinks with the particular fan.
But, in general, according to our tests, the induction
type(air pulling) showed better results the the expulsion
type(air pushing/blowing).
This is because we used an intake cover to draw air
through the lower part of the heat sink for more heat
dissipation from the lower part of the fins.
However, if some other heat source is located near the
heat sink, heated air would come into the heat sink and
affect the thermal performance, so the choice must be made
depending on the environment.
(2003.02.13)

PAL6035MUC with Sanyo Denki fan, Athlon XP 3000+,
Question
PAL6035MUC with Sanyo Denki fan, Athlon XP 3000+, will i get a temp of below 50degC?
Answer
The XP3000+ is rated for 74.3 Watts Max, with a max Die temp of 85C.
Assuming a 45 max local ambient, 85-45 = 40 C max allowable temperature
rise. So, 40/74.3 = .54 DegC/Watt thermal resistance.
The PAL6035MUC, with the SANYO DENKI has a thermal resistance of .37 DegC/Watt.
.37 x 74.3 = 27.5 DegC temperature rise above ambient on a XP3000+ If you are trying to keep the CPU temps down under 50 you would need to keep the
air entering the hear sink at 22.5C or less.
(2003.05.29)

recommended upper limit for PAL6035MUC ?
Question
What is the recommended upper limit for Athlon XP processors using this the PAL6035MUC ? I currently use it on my Athlon XP 2100+ palomino core. And it is somewhat hot I think sometimes. Approximatly 64,5 'C doing videoediting ! Is it normal for the cpu to operate in this temperature ? I just wonder if the fan is Ok to use with my CPU :) ! Thanks
Answer
Yes, it is OK to run your chip at this temperature, as it is rated for
a Max. die temp of 90C.
Your chip is rated at 72 Watts Max thermal power, and the PAL6035MUC
with a quiet Sanyo Denki fan has a thermal resistance of .37 degC/Watt.
So, under max load a temperature rise of 27 degC would be expected.
If the temperature inside your case is 38C, the 65 would be the expected
temperature of your Athlon, which is OK. If you would like to reduce the
temperature further, we would recommend upgrading to the PAL8045.

Pal6035 fan/heatsink Barton 2500 cpu
Question
I currently use a Pal6035 fan/heatsink on my system and will be upgrading to a Barton 2500 cpu. I was wondering if this fan/heatsink combination will be sufficient for this cpu? Thankyou
Answer
The XP2500+ Barton is rated for 68.3 Watts Max, with a Max die temperature of 85C. Assuming a 45c max local ambient, the target thermal resistance for the heat sink is .59 DegC/Watt. Even with the quiet Sanyo Denki fan, the PAL6035 is rated at .37 DegC/Watt, so it would be fine.(2004.01.05)

AMD Duron 1600 processor overheatet with a PAL6035
Question
My AMD Duron 1600 processor overheatet with a PAL6035 + Sanyo Denki fan in a few minutes. Was this a processor problem or is this model to limit for a Duron 1600.
Answer
According to AMD's thermal specifications, the target thermal resistance of an acceptable heat sink for the Duron 1600 is .70 degC/Watt or less. The thermal
resistance of the PAL6035MUC is .37 DegC/Watt, so it should definitely work.
Check to make sure you are getting good thermal contact between the heat sink and processor. If you have a really old PAL6035, you may need to upgrade to the socket A compatible clip, which has a concentrated pressure point instead
of a wider, flatter pressure point.
(2004.03.22)

I Need the stud that goes thru the motherboard
Question
I Need the stud that goes thru the motherboard that holds the heatsink. can I purchase 3 from you? Model 8045. thank you
Answer
Yes, you can purchase these items from us, separately.
Please refer to this site for instructions:
http://www.alphanovatech.com/nw011112e.html

K7S5A ver 3.1...
Question
Hi ! I saw on your website that you say that the Alpha 8045 doesn't suit with the K7S5A ver 3.1... Are you sure about that ? I own an Alpha 8045, and I want to buy this motherboard, my hardware reseller, tried to mount your fan on this motherboard and it seems to fit. Maybe the part with the 2capacitors is very close to the cooler and could be a "potential" problem, but your fan has corners that can cope with it... So to me there is no problem for this fan to fit with this motherboard... Maybe there is an another thing I didn't notice ? In any case it seems ok to me, can you tell me your opinion about that ? Thanks in advance for your answer,
Answer
It's obvious that ECS has in fact changed the
height of the capacitors on the 3.1 board.
On the earlier revision of the board, the capacitors
were very short, and would easily clear under the heat
sink. From the pictures we have seen, the fit is very
tight. For some users, this may be fine, but others may
have an issue with the fit.

GA-7ZXE motherboard
Question
Will the Alpha PAL8045 work on a Gigabyte GA-7ZXE motherboard? I have an AMD 1GHz Duron installed.
Answer
Based on this picture at the Gigabyte website:
http://www.giga-byte.com/products/img/7zxe.jpg
It looks as though one or two capacitors near the socket
would interfere with the PAL8045. This is a smaller board,
and the socket area appears somewhat cramped. We have not had
any feedback on this board, so we can not say with certainty
that the PAL8045 will or will not fit.

Chaintech 7VJL Apogee KT333
Question
PAL8045 MB Compatibility is the heatsink compatable with this motherboard. Chaintech 7VJL Apogee KT333
Answer
There appears to be different revisions of this board.
The board pictured on Chaintech's website has an interfering
capacitor near a corner of the socket.
http://www.chaintechusa.com/eng/products/SOCKA/images/7vjl_b1.gif
However, a current picture at a major online reseller shows a board
with a different layout that does not have the interferring capacitor.
http://65.119.30.151/productimage/13-152-007-01.JPG
http://65.119.30.151/productimage/13-152-007-02.JPG
Please note which board you have before purchasing the PAL8045.
If the capacitor near the socket corner is present, then it is
incompatible. If the capacitor near the socket corner is not present, then
it is compatible.

won't fit FIC AN11
Question
PAL8045 won't fit FIC AN11 motherboard.
Answer
We have not had any previous feedback on this particular board.
http://www.alphanovatech.com/mb_inf_pal8045e.html#fic
However, based on the picture on FIC's website:
http://www.fica.com/Upload/Content/Products/P240000049/an11stealthbig.jpg
It appears as though the capacitors in close proximity to one of the socket corners would interfere with the PAL8045. The layout looks similar to other
FIC boards which have been classified an not-compatible.

PAL8045 with a soyo sy-kt333 dragon ultra
Question
can i combine the PAL8045 with a soyo sy-kt333 dragon ultra MB?
Answer
We have not had feedback on this particular board.
http://www.alphanovatech.com/mb_inf_pal8045e.html#soyo
However, based on the picture at Soyo's website:
http://www.soyousa.com/images/products/800x600/kt333_dragon_ultra(silver).jpg
It appears that the SY-KT333 Dragon Ultra shares the same layout as the
Dragon plus.
http://www.soyousa.com/images/products/800x600/k7v_dragon_plus.jpg
We have received feedback on this board, and it has been classified as
compatible. Therefore, we can say with confidence that the SY-KT333 Dragon
Ultra would also be compatible.

fic an 11 mobo
Question
I have a fic an 11 mobo. i do not see it on your compatibility list. however i do see four mounting holes around the socket and i was wondering if my mobo could possibily be compatible
Answer
We have not had any previous feedback on this particular board.
http://www.alphanovatech.com/mb_inf_pal8045e.html#fic
However, based on the picture on FIC's website:
http://www.fica.com/Upload/Content/Products/P240000049/an11stealthbig.jpg
It appears as though the capacitors in close proximity to one of the socket corners would interfere with the PAL8045. The layout looks similar to other
FIC boards which have been classified an not-compatible.

PAL8045 meet AMD's requirements for cooling their XP 2200+?
Question
Does the Alpha PAL8045 meet AMD's requirements for cooling their XP 2200+? Meaning 1) will it work with the 2200+ and 2) if I use it will it void my AMD warrenty?
Answer
Thermally, the PAL8045 should work just fine with the XP2200+. The XP2200+
puts out 67.9 watts, max. The PAL8045, with the 47CFM Delta fan that we ship,
has a thermal resistance of .28 deg C/Watt. So, 67.9 x .28 = 19 deg C rise above ambient. AMD rates the 2200+ up to 85 deg C max Die temperature. So,
85-19 = 66 deg C max heat sink inlet temperature. The air going into your
heat sink should never get this high, so your XP2200+ would be fine wtih the
PAL8045.
We feel that the PAL8045 is well designed and have tremendous confidence in its thermal performance and mounting mechanism. However, the PAL8045 violates many of AMD's design guidelines regarding size, weight, and mounting method, so the use of the PAL8045 would be at your own risk.

Is there anywhere that I can get just the mounting hardware?
Question
I own an Alpha PAL 8045. I accidentally stripped some of the screws due to a bad screwdriver. Is there anywhere that I can get just the mounting hardware?
Answer
Please follow the instructions at this location regarding the
ordering of replacemt hardware parts:
http://www.alphanovatech.com/nw011112e.html

I recently picked up a PAL8045U and it didnt come with any mount
Question
I recently picked up a PAL8045U and it didnt come with any mounting hardware. can you send me replacement screws/washers/springs and what ever else it needs to be mounted with?
Answer
If you purchased the PAL8045U from one of our resellers, please contact them
regarding the missing hardware. If you purchased the item used or from
an individual, you will need to purchase the replacement hardware from us.
Please follow the instructions at this location regarding the
ordering of replacemt hardware parts:
http://www.alphanovatech.com/nw011112e.html

check PAL8045 compatability with two motherboards not on your lis
Question
I'm looking to check PAL8045 compatability with two motherboards not on your list: the Abit AT7-Max2, and the Soyo SY-KT-400 Dragon Ultra Platinum. I notice the older AT7-Max is listed as a "use at your own risk application"--does this hold true for the Max2?
Answer
Regarding the Soyo Dragon Ultra Platinum:
Yes, based on the latest pictures:
http://65.119.30.151/productimage/13-139-115-05.JPG
The PAL8045 will fit on this board.
Regarding the AT7-Max2:
We have not had feedback on this particular board yet.
So, we would recommend using the same precautions as on
the original AT7-Max.

I lost my alpha 8045 nylon SHOULDER washer
Question
I lost my alpha 8045 nylon SHOULDER washer and I would like to know that where can I buy them?
Answer
Please follow the instructions at this location regarding the
ordering of replacemt hardware parts:
http://www.alphanovatech.com/nw011112e.html

8045alpha can fit the new soyo dragon platinum motherboard.
Question
i was wondering if your 8045alpha can fit the new soyo dragon platinum motherboard.
Answer
Yes, based on the latest pictures:
http://65.119.30.151/productimage/13-139-115-05.JPG
The PAL8045 will fit on this board.

Alpha pal 8045 fits on my Abit AT7 MAX2
Question
Hello, I want to buy a Alpha pal 8045 cpu cooler but I don't know or it fits on my Abit AT7 MAX2. I only could find this information: http://www.micforg.co.jp/en/mb_inf_pal8045e.html but the MAX2 is missing. I would like to know or it's possible to fit the pal 8045 on my mobo.
Answer
Regarding the AT7-Max2: We have not had feedback on this particular board yet. So, we would recommend using the same precautions as on the original AT7-Max.
http://www.alphanovatech.com/mb_inf_pal8045e.html#abit

Longer screw for PAL8045 attachment
Question
I purchased an Alpha PAL8045 Heatsink without a fan. I would like to use fan 80mm x 25mm which has solid sides, but the screws that came with it are too short. Do you have longer screws?
Answer
You need 4 M3-75 screws, which we do carry as an
accessory. The cost is $4.00, which includes
the shipping cost. If you can find them locally,
please let us know as we have to have Japan send
them over.

For ordering, please follow the instruction at
http://www.alphanovatech.com/nw011112e.html

PAL8045 Compatibility with ASUS A7N8X
Question
I am purchasing an Asus A7N8X motherboard and I want to put an Alpha heat sink and fan on it. However the PAL8045U does not specifically say that it will fit the board, but it does fit the A7V8X. I compared the layouts of the two boards and could find no dramatic differences. I was just wondering if there was a reason that the PAL8045U wasn't certified for the Asus A7N8X board.
Answer
If you could not find your motherboard name in our
compatibility list, we are sorry that we do not have the
information yet. This just means that we have not received
feed back on this particular board yet.
However, based on several images of this board, we believe that
the PAL8045 IS compatible with the A7N8X board. The capacitors,
while close, are outside of the 8045's interference area.
(2003.1.29)

PAL8045 Compatibility with Soyo Kt333 Dragon Lite
Question
I have a Soyo Kt333 Dragon Lite and i would like to know if the ALPHA PAL8045U. Heat Sink + Fan fits it. thanks for your time.
Answer
If you could not find your motherboard name in our
compatibility list, we are sorry that we do not have the
information yet. As soon as we have the information, we
will update our compatibility chart.
Most likely, if the board geometry looks same as a compatible
board, the heat sink would fit. However, there are examples
that looks same, but one is compatible, and the other is not
due to the difference of capacitor's height.
The dimension on our online catalog may be useful to check
the clearance with your board.
The PAL8045 fits on most of the Soyo Dragon line, so we
believe that it would fit on this board.
(2003.1.29)

PAL8045 Compatibility with A7N8X
Question
Hi, does the Alpha PAL8045T work together with the Asus motherboard A7N8X. I couldnt fint that motherboard in your chart..
Answer
If you could not find your motherboard name in our
compatibility list, we are sorry that we do not have the
information yet. This just means that we have not received
feed back on this particular board yet.
However, based on several images of this board, we believe that
the PAL8045 IS compatible with the A7N8X board. The capacitors,
while close, are outside of the 8045's interference area.
(2003.1.29)

Longer Screws for PAL8045
Question
I bought the Alpha PAL8045, and a fan from Titan (http://www.titan-cd.com/a8025.htm) Since the titan has a solid frame, the screws are too short. I was wondering if you could provide longer screws of the same type supplied with the heastink, or direct me to a place where i can get them.
Answer
We have long screws, such as M3x75.
You can order them from us directly.
Please visit our web site at
http://www.alphanovatech.com/nw011112e.html
(2003.01.29)

PAL8045 Compatibility with Epox 8K9A
Question
Hi,i'm just emailing you to you guys to know that the pal 8045 won't fit on a Epox 8K9A, i bought one last week and when i try to fit it, it hits 2 capacitors, i don't know if there are a solution to this problem, because it's a big area "to cut".
Answer
Thank you for your feedback.
We will add this information to our compatibility
list.

PAL8045 Compatibility with A7N8X nforce 2
Question
Please can you tell me whether the pal8045 would be compatible with the new Asus A7N8X nforce 2 board as it is not on your compatibility list. I believe this motherboard is the update to the Asus A7V8X.
Answer
If you could not find your motherboard name in our
compatibility list, we are sorry that we do not have the
information yet. This just means that we have not received
feed back on this particular board yet.
However, based on several images of this board, we believe that
the PAL8045 IS compatible with the A7N8X board. The capacitors,
while close, are outside of the 8045's interference area.
(2003.1.29)

PAL8045 Compatibility with Tyan dual processor
Question
I am interested in building a system using a new Tyan dual processor motherboard ( S2469UGN ) but would like to know if your PAL8045 will work on the board. If not, can you recommend which of your products is the better choice?
Answer
Because the PAL8045 is so large that it will not fit
on the dual motherboard.
Either the PAL6035MUC, or the PEP66U-M63 would
be a good choice for this board.
(2003.01.29)

PAL8045 MB Compatibility with Shuttle AK35GT2 MOBO
Question
PAL8045 MB Compatibility. Is the 8045 compatible with the Shuttle AK35GT2 MOBO.
Answer
If you could not find your motherboard name in our
compatibility list, we are sorry that we do not have the
information yet. As soon as we have the information, we
will update our compatibility chart.
Most likely, if the board geometry looks same as a compatible
board, the heat sink would fit. However, there are examples
that looks same, but one is compatible, and the other is not
due to the difference of capacitor's height.
This board appears similar to the AK31A, which is NOT
compatible, however.
The dimension on our online catalog may be useful to check
the clearance with your board.
(2003.1.29)

Compatibility with Gigabyte GA-7VAXP
Question
Does your PAL8045 fit the Giga-Byte GA-7VAXP?
Answer
If you could not find your motherboard name in our
compatibility list, we are sorry that we do not have feedback
information yet. As soon as we have the information, we
will update our compatibility chart.
Based on retail pictures of this board, however,
we can tell that the PAL8045 is NOT compatible.
This board does not feature the 4 mounting holes
around the socket.
(2003.1.29)

if i could buy a more powerful fan
Question
Feedback: first, i would like to say that the PAL8045U will fit on a ABIT KX7-333(R) mobo. 2nd, air pulling lowers my core temp 5C more than pushing, even though my chipset fan is close to it and is putting out a tiny bit of hot air. Question: and lastly, and i have a PAL8045U, i overclock my AMD XP 2100+ and was woundering if i could buy a more poverful fan then the one it comes with, noise really isnt an issue. thanks
Answer
Thank you for your feedback. Regarding fan direction, every board and
system is different, so we advise trying the fan in both directions, as you
have done.
There is a large variety of 80mm fans than can be used with the PAL8045.
Of course, there is always a tradeoff between noise and performance.
There are some 80mm fans that put out over 80CFM. Two examples are the
DELTA FFB0812EHE and the Vantec Tornado. Both of these can be purchased
from several of our resellers:
http://www.micforg.co.jp/en/resellerlist.html

how manu washer do i use Thorougbred Processor
Question
Hello i have your ALPHA PAL8045U. i hade a palamino chip now i have a AMD Athlon XP 2100+/266 FSB Thorougbred Processor. im using the same set up but how manu washer do i use tieh the new throughbred cpu's 1 or 2. I could find anything on your site about it. Please this is very important to me , email me right away
Answer
The XP/Palamoin/Thorougbred cores are approx. .3mm lower than the original
Thunderbird cores. For these, we recommend the use of one additional
washer per spring. This means that each spring should have 3 nylon washers
on it. The additional washer can go on eihter end of the spring as it makes
no difference regarding the amount of force it exerts.

PAL8045 and nylon mounting nuts
Question
I am searching for a reputable online Alpha retailer, any help would be greatly appreciated. I am also currently using a PAL8045 and am curious if there is any possibility of the heatsink coming loose, via the nylon mounting nuts. Thank you for your time.
Answer
Please refer to the "Reseller List" on our website.
http://www.micforg.co.jp/en/resellerlist.html
If the installation procedures are followed, the PAL8045
should not come loose. If you are concerned regarding the
nylon nuts, you can swithch to standard 6-32 metal nuts.
However, make sure that the nuts will not contact any
componenst on the backside of the MB. Several Athlon MBs
have surface mount components close to the holes on the back
side of the board. If you are using a metal nut, it could
possibly short them out.
Please refer to this picture as an example:
http://www.alphanovatech.com/images/8k7a+_interference.jpg

PAL8045 and MB Compatiblity [EPoX EP-8K5A2plus ]
Question
Please can you tell me if the PAL8045 is compatible with the EPoX EP-8K5A2plus ?
Answer
If you could not find your motherboard name in our
compatibility list, we are sorry that we do not
have the information yet. As soon as we have the
information, we will update our compatibility chart.
Most likely, if the board geometry looks same as
a compatible board, the heat sink would fit.
However, there are examples that looks same, but
one is compatible, and the other is not due to the
difference of capacitor's height. The dimension on
our online catalog may be useful to check the clearance
with your board.
(2003.2.13)

PAL8045 and ASUS A7N266
Question
At Newegg.com there is this note in regards to the PAL8045 compatability on an Asus A7N8X motherboard: When installing the standoff washer, it could possibly touch the surface mount resistors close to the motherboard hole. A possible solution would be cutting a part of washer using a set of nippers or cutting pliers to provide clearance. Due to these issues, we consider the use of the PAL8045 on this board a "Use at your own risk application." Does your company have any information on this - warnings, advice, etc.?
Answer
We made the note for ASUS A7N266 because
a customer sent us the feedback. Please visit our
web site at:
http://www.alphanovatech.com/mb_inf_pal8045e.html#asus
(NOTE2)
We only heard from customers that the particular board
is compatible. It might be similiar situation as the
A7N266. In any cases, we would like to suggest that
you attach the standoff carefully.
(2003.02.13)

Feedback regarding PAL8045 and A7N8X delux
Question
I purchased an ALPHA PAL8045T. It fits the A7N8X delux motherboard with just enough clearance (1/16 inch) to the closest capacitor. I have tried both fan positions. I found that with air pushing on the HS my temps are cooler. According to ASUS Probe I am idling at 38C (no OC). If I position the fan to pulling mode my temps climb by 2 degrees C. All in all a good HS. I would have liked a better shoulder washer to fit my board, however. The type shipped with the ALPHA PAL were smaller than the holes in MB so had to center it by feel. Not precise enough considering the situation.
Answer
Thank you for your information. We truly appreciate and use feedback from
our customers to improve our products.
(4.30.03)

PAL8045 FAN is too loud / Power Supply
Question
Power supply and Pal8045 I have a Pal8045U mounted on a MSI Motherboard with an Athlon XP1800+ (Palomino). On your webpage the heatsink should run with 4000 RPM and a noise level of about 40 db(A). But my one runs with over 6300 RPM and the noise is produced is terrible. My question is: do I have to connect the Pal8045 with the power supply or is it enough to connect it to to Motherboard? I have connected it with the power supply and maybe that'S why it runs so fast and makes so much noise. The temperature of the CPU remains at a level of about 40degC, thats very good, but my ears...
Answer
Most resellers are purchasing our heat sinks from us
without fans, and then bundle a variety of fan choices
with the heat sink. Therefore, I think what you
have is not listed on our web site.
You can get quieter 80mm fans from a large number of
internet resellers of even local computer shops.
I would recommend plugging the fan directly into the
power supply connector, as many of the high-performance
fans out there draw far too much power for the motheboard
headers and can burn them out.
(4.30.03)

PAL8045 and MB Compatiblity [A7V333-X]
Question
Would the PAL 8045 fit the ASUS A7V333-X Motherboard?
Answer
If you could not find your motherboard in our
compatibility list, as we have not received any
feedback yet. As soon as we have the information,
we will update our compatibility chart.
However, judging from the board layout pictures on the internet,
the PAL8045 should be compatible with your board. There are none
of the "trouble" layout features that we have become familiar with.
(4/30/03)

PAL8045 and Fan
Question
I bought a PAL8045 without the fan. What size fan do I need to mount on this heatsink?
Answer
There is a large variety of 80mm fans than can be used
with the PAL8045. The screws that come with the PAL8045 are
designed to work with any 80mm fan as long as there is
a double flange feature. In other words the four corners
can not be solid, or the screws will not fit.
But you may need to obtain special length screws. For example,
If you would like ot use 80mm x 25mm which has solid sides,
then, you need 4 M3-75 screws, which we do carry as an
accessory. The cost is $4.00, which includes the shipping cost.
If you can find them locally, please let us know as we have to
have Japan send them over. For ordering, please follow the
instruction at http://www.alphanovatech.com/nw011112e.html
(5.13.03)

PAL8045 and MB Compatiblity [LANPARTY KT400A]
Question
I guess this mail will be like thousands of others. Will your PAL8045T fit on the DFI Lanparty KT400A?
Answer
If you could not find your motherboard name in our compatibility list, we are sorry that we do not have feedback information yet. As soon as we have the information, we will update our compatibility chart.
However, based on pictures of this board;
http://www.lanparty.com.tw/Upload/Product_Picture/LANPARTY%20KT400A%20b1.jpg
we can tell that the PAL8045 is NOT compatible. This board does not seem to feature the 4 mounting holes around the socket. Also, there is a capacitor near the socket cam box that appears to be close enough to interfere with
the PAL8045. (2003.5.27)

PAL8045 on the XP 3200+ with YS-Tech Fan
Question
I am presently using the Alpha PAL8045 with a 3400 rpm Ys-tech fan to cool my Athlon XP 2000+. I plan to upgrade to the Athlon 3200+ and I would be grateful if you could tell me if I can use the PAL8045 on the 3200+ and what type of fan is needed to keep this 76.8Watts hothead in check. Thanks in advance
Answer
The PAL8045, with a similar speed fan, tested to a thermal resistance of .30 degC/Watt. Based on AMD's published thermal data, this would mean that your
3200+ would run approx. 5 degrees C hotter than your 2000+, with the same
heat sinks and fan.
Based on the same AMD published data, assuming a max 45C heat sink inlet,
the target resistance for a 3200+ capable heat sink is .52DegC/Watt. As
mentioned, the PAL8045U tested at .30 DegC/Watt, so it would be fine with
this chip.(2003.07.03)

PAL8045 and Athlon XP 3000+ Barton core
Question
Is the PAL8045 capable, using a Sunon 8cm fan, of cooling an AMD Athlon XP 3000+ Barton core 400MHz FSB CPU on an Asus A7N8X Deluxe version 2.00 board?
Answer
According to AMD's technical document, the AMD XP3000+ is rated
for 68.3 Watts Max output, thermally. It is also rated for a max
Die temp of 85C.
Lets assume a max local ambient of 45C for your heat sink inlet
temperature. So, 85-45 = 40 C max allowable temperature rise.
40/68.3 = .59 degC/Watt target thermal resistance.
The PAL8045T has a thermal resistance of .28 with a 46 CFM fan.
Although we did not test with your Sunon fan, we think it would
be less than .59 degC/Watt if your fan has a similiar amount of
air flow. If so, this would be fine for the XP3000+, based on
AMD's published thermal data.
(6.27.03)

Pal8045 compability with Epox EP-8rda3+ motherboard ?
Question
Is Pal8045 compability with Epox EP-8rda3+ motherboard ?
Answer
Yes, based on the picture at the link below, it should
fit with no interference issues at all.
http://www.3dnews.ru/documents/5239/8rda3+socket.jpg
(2003.07.18)

8045 will fit ABIT NF7 AND the ABIT NF7-S
Question
I have owned and used your heatsink for bout 3 years now and must say it totally keeps things cool.I am building a couple new computers and have read many reviews and seen many pics to try to find out if the pal 8045 will fit the mother boards i am ordering..I will be ordering the ABIT NF7 AND the ABIT NF7-S with rev 2.0 Please drop me an email with an answer...I am sure that if your support is anything like the products you sell ill be hearing from you soon... THX again for your help
Answer
Based on the pictures here:
http://images10.newegg.com/productimage/13-127-144-05.JPG
http://images10.newegg.com/productimage/13-127-143-14.JPG
As well as feedback, we can say that the PAL8045 will fit these boards
with no interference issues.
(2003.07.21)

PAL8045 fit on the Aopen AK77-600
Question
Does the PAL8045 fit on the Aopen AK77-600 Max mainboard?
Answer
Although we have not had any direct input on this particular board,
we feel that it should definitely fit.
Based on the following picture and article, there does not appear to
be any interference issues:
http://www.pcstats.com/articleview.cfm?articleid=1453&page=3

PAL8045 ONLY fit on AMD motherboards ?
Question
Does the PAL8045 ONLY fit on AMD motherboards or does it fit on P4 motherboards as well??? like the Aopen AX4C Max II
Answer
The PAL8045 is for Athlons only.
If you need a P4 socket 478 heat sink, use the
PAL8942, as this heat sink is compatible with
the Aopen board you have mentioned.

PAL8045 with a Shuttle AN35n ULTRA
Question
can i combine the PAL8045 with a Shuttle AN35n ULTRA MB (Sockel A nforce2 FSB 400)?
Answer
Although we have not had feedback on this particular board, there
appears to be a capacitor in one of the corners that would interfere
witht he PAL8045.

PAL8045 fit on a ASROCK K7S8X
Question
will the PAL8045 fit on a ASROCK K7S8X motherboard?
Answer
Although we have not had feedback on this specific board, we would have
to say that it is incompatible with the PAL8045. It appears that there
are capacitors that would interfere with the fit of the PAL8045.(2003.10.27)

PAL8045 Asus mobo A7V600 barton core xp 2800+
Question
I have an Alpha PAL8045, it is currently cooling an athlon xp1800 cpu on an Epox mobo. Would it be able to cool my new barton core xp 2800+ on an Asus mobo A7V600, to the same standard. I am using a YS-Tech FD81255 80mm fan. After heavy load i get an average temp of 42C.
Answer
Depending on which XP1800+ model you own, this chip can put out a max of
66.0 Watts. The 2800+ Barton puts out a maximum of 68.3 Watts. So, the maximum
termperature increase would only be 1~2 degrees C.(2003.11.17)

K7D Master L board compatible with a pair of 8045-sinks
Question
Is the K7D Master L board compatible with a pair of 8045-sinks, if they arent is it possible to solve by cutting some material from the heatsink?
Answer
Although we have not had feedback on this particular board, from the specifications it appears as if there are interferring components, such
as capacitors. Although it may be possible to modify/machine the heat sink to
clear these components, it is not something we can verify or recommend.(2003.11.17)

PAL8045 and AMD Athlon XP2600+
Question
I am currently using my PAL8045 with an Athlon 1400. I have just purchased an XP 2600+ (266). AMD says the maximum power output of the 1400 is 72.1 watts and the maximum power output of the 2600+ is 68.3 watts. I assume that this means I can still use my 8045 to cool my 2600+. Is this correct?
Answer
The PAL8045 will definitely work with the XP2600+ (266). You are correct that the thermal power went from 72 to 68.3 Watts. However, AMD reduced the Max die
temp from 95 to 85C for the XP2600+. Because of this, the target thermal
resistance for the heat sink, based onf 45C max ambient has gone from .69 to .59 degC/Watt. So, the XP2600+ does require a better heat sink. However, the PAL8045 has a thermal resistance well under .59 DegC/Watt, so it would be fine.

PAL8045 and MSI K7N2 Delta ILSR
Question
Does the PAL8045 fit the MSI K7N2 Delta ILSR?
Answer
If you could not find your motherboard name in our compatibility list, we are sorry that we do not have feedback information yet. As soon as we have the information, we will update our compatibility chart.
However, based on pictures of this board on the web site, we can tell that the PAL8045 is NOT compatible. This board does not seem to feature the 4 mounting holes around the socket. Also, there is a capacitor near the socket cam box that appears to be close enough to interfere with the PAL8045. (2003.11.17)

39 cfm Sunon fan with a PAL 8045 to cool an Athlon XP 3200
Question
Can I use a 39 cfm Sunon fan with a PAL 8045 to cool an Athlon XP 3200 or do I need a bigger (and noisier!) fan. Thanks.
Answer
Yes, This would be fine.
According to AMD's thermal specifications, the XP3200 would require a heat sink with a thermal resistance of approximately .50 degC/Watt or less. The thermal resistanc of the PAL8045 with a fan with similar specifications is approximately .30 to .35 degrees C/Watt, so it would be fine for your processor.
http://www.alphanovatech.com/c_pal8045e_other_fan.html
(2004.03.22)

PAL8045 installation guide
Question
I want to transfer a PAL8045 to a different motherboard. It has been a while since I installed the 8045, and I want to make sure I do it right on the new MB. Unfortunately, I lost the installation instructions that came with the 8045. The instructions don't seem to be available on your website. Is there any way that I can get the installation instructions for the PAL8045? Thank you.
Answer
The PAL8045 installation guide is available on our website as a
downloadable PDF file.
Here is the link:
http://www.alphanovatech.com/dxf/X001ZF0S-C.pdf
(2004.03.29)

8045 fit on an Aopen AK79D-400VN
Question
Does the 8045 fit on an Aopen AK79D-400VN? I didn't see the board in your compatibility list, and I can't tell from looking at the picture on the Aopen website, http://english.aopen.com.tw/products/mb/AK79D-400VN.htm . Thanks.
Answer
Based on the picture you linked to as well as this one as well:
http://www.newegg.com/app/Showimage.asp?image=13-137-036-02.JPG/13-137-036-05.JPG/13-137-036-01.JPG/13-137-036-06.jpg
It should fit. The picture at New Egg shows a version where one of the
capacitors has been removed. I believe that this will definitely prevent
any compatibility issues.
(2004.03.29)

PAL8045 compatible with the AsRock K7VM4
Question
Is the Alpha PAL8045 compatible with the AsRock K7VM4 micro-ATX mainboard?
Answer
Unfortunately, the are two large capacitors that would interfere with the PAL8045.

PAL8150 Compatibility with ASUS motherboard
Question
I am going to buy an ASUS motherboard with an AMD64 Athlon CPU (Socket 754). Which ASUS boards is your PAL 8150 heatsink compatible with? Specifically, I'm considering the following models: K8N-E Deluxe, K8V basic, and K8VSE deluxe.
Answer
The PAL8150 was designed around the keepout area
in AMD's design guide, so it should be compatible with
all Athlon 64/Opteron MBs with respect to size.
The only possible issue may be with the backing plate. The PAL8150
is designed to attach directly to the AMD reference metal backing
plate's threaded standoffs. If the MB manufacturer does not include
a backing plate that conforms to this specification, you may need to
purchase our backing plate, the BP81S:
http://www.alphanovatech.com/images/bp81s.jpg
Please send an email if you need to order one. Also, Newegg.com
sells a similar metal backing plate.
I believe that most Asus boards. do include the metal backing
plate, so you should be OK. The plastic retention frame will
need to be removed from the chip side of the board, but this
would be a very simple process.(2004.08.05)

compatibility issues with the Asus P4T mobo
Question
I would like to know if you are aware of any compatibility issues with the Asus P4T mobo. I am afraid that the heatsink might not fit between the capacitors.
Answer
Since this board follows the standard reference layout
from Intel, it should fit. The PAL8942 was designed to
fit completely within the Intel keep out area, so no
interference issues should be present on this board.

the board is now very, very slightly
Question
Mounted an 8942 on a 2.4GHz P4/ GA-8IEXPI (Gigabyte) and noticed looking on end, that the board is now very, very slightly "bowed" right in the HSF area. I loosened the standoffs, to maybe reposition them slightly to relieve any pressure that might be causing this but it didnt change it---I followed all instructions carefully as far as mounting it goes... Please advise---
Answer
This "bowing" is normal and part of the P4 design guidelines published by Intel.
The "bowing" puts the board in compression, preventing the board from snapping
into a convex shape during shock. The 478 socket is a surface mounted "BGA" design. This means that only the solder balls are hoding the socket on to the
board. These balls can take the compression load present in the concave "bowed"
shape. However, if the board went into a convex shape, the balls would be subject to tension and shear loads, which would cause them to fail. In some cases, this could actually cause the socket to come loose from the MB.

Compatibility with Gigabyte GA8IRXP
Question
I have a gigabyte motherboard model GA8IRXP. I was wondering if either of these two heatsinks would work with it, the PAL 8942T, or the PAL 8045T? I've looked at the motherboard and there doesn't seem to be four holes around the cpu socket, there are four plastic looking things on the mounting bracket around the cpu socket but I don't know if these are removeable or not. Any help you can give me will be greatly appreciated.
Answer
The PAL8942 is the heat sink for Socket 478/Intel Pentium4.
The heat sink uses four holes surrounding the CPU socket.
These holes are ususally used for the mounting bracket.
Usually, the mounting bracket is easily removed by CAREFUYLLY
pulling out the white plastic pins and then collapsing the bulbus
ends of the bracket on the backiside of the board. Gently pull the
bracket out at this point. Now, the board is ready to accept
the PAL8942 mounting hardware.
(2003.1.29)

PAL8942 MB compatibility ABIT IT7-Max
Question
I have looked for a PAL8942 MB compatibility chart but have not found one on your site. Is the PAL8942 compatible with the ABIT IT7-Max (original, not Max2) motherboard?
Answer
The PAL8942 completely conforms to Intlel's published keep-out area specifications. Therefore, the PAL8942 should fit on any standard
P4 478 motherboard. It fits within the same space as the standard
retail plastic retention mechanism, so there really shouldn't be
any compatibility problems with this heat sink.
(2003.01.29)

PAL8942 fits on the ASUS P4PE motherboard
Question
I would like to know if the PAL8942 fits on the ASUS P4PE motherboard. Would it be possible to have a MB compatibility list on your website (I seem to remember there was one back in time, but can no longer find it...)?
Answer
The PAL8942 completely conforms to Intel's published keep-out area specifications. Therefore, the PAL8942 should fit on any standard
P4 478 motherboard. It fits within the same space as the standard
retail plastic retention mechanism, so there really shouldn't be
any compatibility problems with this heat sink.
We do have a M/B compatibility list for the PAL8045, as it will not
fit on all Athlon M/Bs.
(2003.01.29)

PAL8942M82 There's a kind of black
Question
I've just been browsing through your website, and I'd like to ask you some information about the PAL8942M82. I have ordered this cooling system for my uncle's computer on another website (in fact, I have ordered a whole PC configuration in pieces, which I intend to mount together for him), but there's a little question I'm asking to myself : is the PAL8942 compatible with the motherboard I've chosen, in other terms the ASUS P4S533-A? On your website, you say there's no problems with sockets 478, and the P4S533 motherboard definitely has this kind of socket, but it doesn't look as if it had the four holes you speak about. There's a kind of black "cage" around the socket, but no holes!! How can I mount the PAL8942 on that? Do I have to remove this "cage"?
Answer
The PAL8942 is the heat sink for Socket 478/Intel Pentium 4.
The heat sink uses four holes surrounding the CPU socket.
These holes are ususally used for the mounting bracket.
The mounting bracket is removed by CAREFUYLLY pulling
out the white plastic pins and then collapsing the bulbus ends of
the bracket on the backiside of the board. Gently pull the
bracket out at this point. Now, the board is ready to accept
the PAL8942 mounting hardware.
(2003.02.13)

PAL8942 with 38mm thickness fan
Question
I want to install a fan with a 38mm thickness... can you tell me what size screws I need to install this fan to the alpha pal8942? thanks
Answer
M3-80(80mm length) will work. You can obtain this screws from us
directly. If you would like to order, please follow the instruction
at http://www.alphanovatech.com/nw011112e.html

PAL8942 for P4 3.06 Ghz processor
Question
I am purchasing a Pentium 3.06ghz processor and a gigabyte ga-sinxp1394 mother board. My question is will the 8942 paired with a Vantech Tornado fan (Model number: TB8038H,80 x 38 mm,Rated Power: 9.1W,Rated Current: 0.76 Amp,Fan Speed: 5700 RPM,Air Flow: 84.1 CFM) be sufficient cooling for this processor?
Answer
Yes. According to Intel's document, the maximum
power of the chip is 81.8(W) and the maximum CPU
case temperature is 69(C).
Even if using our standard M81 Delta fan(47CFM),
the thermal resistance would be 0.23 degC/W.
This means that the temperature rise above ambient
would be 18.8(C). Even if the ambient is 45(C),
it is still under 69(C). Therefore, it should
work fine.
(4.30.03)

PAL8942 Mounting bolt
Question
I'm using your ALPHA PAL8942 P4 heatsink and I have a question about installation.How tight should the mounting bolts be,merely tensioned or until the screws physically hit the bottom of the mounting posts.
Answer
After the standoffs are secured to the board, the heat sink is installed
on the processor by tightening the spring/screws in an alternating, criss-cross pattern. Continue to turn until the screws have bottomed in the standoff. At this point, stop, as you can not add any additional load by tightening the screws any further. (4.30.03)

PAL8942 for P4 2.53Ghz. Is this fine?
Question
I've just built a PC using a P4 2.53 Ghz chip,and a PAL 8942 T cooler.The system currently runs at 42C when idle,personally I think that this is not quite right,my suspicion is that the heatsink is not quite tight enough.Therefore I was wondering if you could tell me how tight the mounting bolts should be,do I screw them fully into the base or just until it is firm? I would be grateful for any help you could provide
Answer
After the standoffs are secured to the board, the heat sink is installed
on the processor by tightening the spring/screws in an alternating, criss-cross pattern. Continue to turn until the screws have bottomed in the standoff. At this point, stop, as you can not add any additional load by tightening the screws any further.
The temperature of your chip will depend greatly on the local ambient temperature near the heat sink, so 42C may not be incorrect if the air going
into the heat sink is already warm.

PAL8942 with Gigabyte GA SINXP 1394
Question
I have this motherboard, the Gigabyte GA SINXP 1394; is it compatible with the Pal 8942?
Answer
The PAL8942 completely conforms to Intlel's published keep-out area specifications. Therefore, the PAL8942 should fit on any standard P4 478 motherboard. It fits within the same space as the standard retail plastic retention mechanism, so there really shouldn't be any compatibility problems with this heat sink. (2003.06.27)

Plastic heatsink assembly already installed in the 4 holes ???
Question
I am thinking of buying your PAL8942 for my new P4 system. Is it compatible with the P4p800 and p4c800 deluxe motherboards ?. The reason I ask is that on a close up picture of the motherboard (see asus website) it shows a plastic heatsink assembly already installed in the 4 holes where the PAL8942 stand-offs are supposed to be located. How exactly will this allow me to install the pal8942? Will the plastic heatsink assembly already on the motherboard have to be removed ? A quick answer would be appreciated as I only have a small window to purchase this within.
Answer
The plastic retention module will need be be removed from the board. These are standard on almost all P4 478 boards. They can be removed by pulling out the center pin on each of the 4 corner mounts. After this is done, on
the backside of the board, squeeze and push the bulbous ends through the board.
This will release the plastic retention module.
With this plastic retention module released, you can then mount the brass
standoffs.

PAL8942M82 COMPATIBILITY CPU PENTIUM IV
Question
PAL8942M82 COMPATIBILITY CPU PENTIUM IV
Answer
Based on Intel's published thermal data for the P4,
the PAL8942M82 would be able to handle all of the current P4s,
including the 3.2 Gig 800Mhz FSB HT processor.
This assumes a max local ambient of 45C, and the use of Intel's published Thermal design power of 82 Watts and a Max case temp of 70C.
Based on these numbers, the target thermal resistance for the thermal
solution is .31 degC/Watt, which is the published thermal resistnace
of the PAL8942M82.
(03.07.11)

PAL8942 Compatibility with Intel D850GB
Question
Will the Alpha PAL 8942 work on a 423 pin P4 board such as the Intel D850GB? If not, do you sell one that will?
Answer
Although we do not have any feedback from our customers, the PAL8942 should fit on any standard P4 478 motherboard since the PAL8942 completely conforms to Intlel's published keep-out area specifications. (2003.11.03)

use PAL8942 Heatsink for Intel Prescott processor
Question
May I use PAL8942 Heatsink for Intel Prescott processor, or I "must" buy PAL8952 ?
Answer
The current Intel Data Sheet for the "E" Prescott processors has a new thermal profile which plots power dissipation versus maximum case temperature.
Assuming a 45C max local ambient, the target thermal resistance would be approximately .28 DegC/Watt. Both the PAL8942 and PAL8952 meet with this requirement, using the M81 Delta fan.
(2004.03.22)

can I use a 478 heatsink (on my 432)
Question
I would like to know if the mounting points for a socket 478 board are the same as a socket 432 board. Or in other words, can I use a 478 heatsink (on my 432) as long as it uses the 4 hole mounting system?
Answer
We are not familiar with socket 432.
If you are referring to socket 423 Pentium 4, then we can
answer. Socket 423 and 478 utilize completely different
mounting hole geometry, so a socket 478 hat sink could not
be used on socket 423.
However, socket 423 and socket 603/604 Xeons share the
same mounting hole pattern and approach. So, you could
use one of our active Xeon heat sinks for socket 423
http://www.alphanovatech.com/cat_xeone.html
Please feel free to contact us regarding ordering.
(2004.08.09)

Alpha PEP66U okay for an Athlon XP2000+ or higher?
Question
Is the Alpha PEP66U okay for an Athlon XP2000+ or higher, what will the CPU temperature be?
Answer
With the quiet 19 CFM Sanyo Denki fan, the PEP66U has a thermal resistance of .35 deg C/Watt. The XP2000 plus puts out 60.3 Watts max, with a max die
temp of 90 deg C.
So, 60.3 x .35 = 21.1 deg C temperature rise above ambient.
90 deg C(max die) - 21.1 = 68.9 max heat sink inlet temperature.
A more realistic heat sink inlet temperature for a desktop system
would be around 45 deg C. So, 45 + 21.1 = 66.1 deg die temp, which
is well below AMD's max allowable.
In summary, the PEP66U would be ok for your XP2000+.

PEP66 XP 2600+ to a Athlon XP 2800+
Question
I have found data on using the PEP66 on the Athlon XP 2000+ but I am interested in if the PEP66 is able to efficiently cool a Athlon XP 2600+ to a Athlon XP 2800+. Thank you for your time and help.
Answer
Even with the quiet Sanyo Denki fan, the PEP66 has a thermal resistance
of .35 DegC/Watt.
The XP2600+ puts out 68.3 Watts at Max load. The XP2600+ is rated
for 85C max die temperature.
68.3(.35) = 23.8 degC temperature rise above ambient.
So, 85 - 23.8 = 61.2 max allowable ambient. As long as the
air going into the heat sink is belwo 61.2 degC, according to AMD's published
specifications, your XP2600+ would be fine.

PEP66T work with Intel's "Tualatin"
Question
Will the type processors?
Answer
Although the PEP66T could go on the Tualatin processor, the clip
would be very stiff since the Tualatin is 2mm thicker than the original
flip chip PIII.
We would recommend the use of the PAL6035MUC, with the FC-PGA2 Tualatin clip. We offer it with a 10mm Delta fan, or a low noise 25mm Sanyo Denki fan.
You can purchase either from us directly. Please contact us if you are interested.
(2003.11.17)

Natuaral Convection Data for Z40
Question
Do you have natural convection thermal resistance data for your Z40 product?
Answer
We do not have the data for natural convection.
Since the Z series fin pattern is dense, we would expect
the performance to be poor under natural convection.
For natural convection conditions, we would recommend the use
of a sparse fine pattern, such as the LPD series.

38mm thick fan can be used with the PAL8952?
Question
Are there screws available so that a 38mm thick fan can be used with the PAL8952?
Answer
Yes, either an M3-90 of M3-95 screw will work.
The M3-90 screws can be purchased from Alpha Novatech
Please go to the following web site and fill out the order form.
http://www.alphanovatech.com/nw011112e.html
The M3-90 Screw set is $3.00, includes 4 M3-90 screws and 4 washers.
Just write in M3-90 screw set and fill in the price.

©2004 Alpha Novatech, Inc.