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Old 27th March 2006, 05:25 PM   #1
motzu' is offline motzu'  Romania
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Default Computer heatsinks for Aleph

I have searched the forum for previous threads regrading this issue but I was unable to find one .Or maybe too unpacient

Anyone thinks that one might use Intel PIV Processor heatsinks for an Aleph 3 or 5 project ?

I have a box full of them . Pentium IV boxed, originals

Some have a flat bottom alu only with fins straight up and some have a cooper heart and then the fins are spreading circular

All of them are equipped with fans - quiet ones very easy to work at 3 or 4 volts

I thought first to use them as one for each MOSFET - with or without fans

Or to place them and tight them together on an alluminium plate ?

Stupid ?

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Old 27th March 2006, 05:41 PM   #2
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I think they'll work fine, as long as the fans are quiet enough
for you.
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Old 27th March 2006, 05:50 PM   #3
motzu' is offline motzu'  Romania
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Master

Tnx for your kind reply

I was thinking to mount them tight on an allu plate and use them without fans

Size of a cooler is about 10x7cm with 5 cm fins . Pretty aglomerated though

For 4 coolers I have an 28x10x5cm radiator with a lot of fins

But as far as i know too many fins together are not efficient unless you ventilate them

Bottom line - because Intel or AMD sites are poor in info .Does anyone knows what is the (passive) thermal coefficient for such a heatsink.

No fan involved
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Old 27th March 2006, 07:16 PM   #4
Netlist is offline Netlist  Belgium
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Try it and do post the results. I'd love to see a picture of say twelve or sixteen fans cooling an Aleph.

/Hugo
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Old 27th March 2006, 08:11 PM   #5
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Here's a couple of threads on this forum concerning computer heatsinks:

Alpha Heatsinks
http://www.diyaudio.com/forums/showt...?postid=320864
compact aleph5 with cpu heatsinks finished

The search engine on this board is not as good as it should be. Google has a cool site search feature that I've found helpful:

KEYWORDS site:www.diyaudio.com

I used this criteria to find the above links, there are a lot more to explore.

Cut and paste this text into the Google search box:
computer heatsinks Aleph site:www.diyaudio.com

Good luck,

-David
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Old 28th March 2006, 04:04 PM   #6
Tyimo is offline Tyimo  Hungary
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Hi!

Quote:
I was thinking to mount them tight on an allu plate and use them without fans. Size of a cooler is about 10x7cm with 5 cm fins. Pretty aglomerated though. For 4 coolers I have an 28x10x5cm radiator with a lot of fins
I am afraid that wil be not enough!
I have an A5 and it is hot, a real power plant... :-)

Greets:

Tyimo
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Old 28th March 2006, 06:09 PM   #7
motzu' is offline motzu'  Romania
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Indeed it's not enough.I made some calculations based on documentation found on conrad site

I quit the idea.

Out of thread

Thanks all !
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Old 28th March 2006, 11:21 PM   #8
flg is offline flg  United States
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I have 2 "Tower 112" Heat Pipes by Thermaltake I think. They are made for P4 processors. I tested one at 100W with 2 TO-247 pkgs and the fan at a barely audible level(for me) and I believe it will do the trick. I did not get any temp measurements but I think the surface of the radiator portion was at about 60C... You have to consider, you have a die or a case thermally conductive contact area dumping 1/3-1/2 that 300-350W power supply. I would hope these things can dump 100W. And, at $20-100 they are a great deal compared to the Thermalloys and Conrads... It is difficult to use the lower profile units and still have a quite fan. The heat pipe like I have has alot of area, a 4"x4"x4" block of copper radiator. You can even get complete processor water cooling systems for those Monster amps and just use 2, 4 or 6 of the processor portion...
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