Computer heatsinks for Aleph

[motzu']

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 ?

[Nelson Pass]

I think they'll work fine, as long as the fans are quiet enough
for you.

[motzu']

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

[Netlist]

Try it and do post the results. I'd love to see a picture of say twelve or sixteen fans cooling an Aleph.

/Hugo

[hifimaker]

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

[Tyimo]

Hi!

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

[motzu']

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 !

[flg]

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...