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DIY: RAM Heatsink

Forum Overclocking : Cooler and Heatsinks - DIY: RAM Heatsink

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Shadow703793   01-06-2008 at 07:58:43 PM

http://www.mediafire.com/imgbnc.php/3ceb25b0b67f8636ba51f4eb9181dd182g.jpg
http://www.mediafire.com/imgbnc.php/caa65f60ee622f32e8d2887724a9d8bb2g.jpg
http://www.mediafire.com/imgbnc.php/90486491cc3f305b0ff10bf72a82bf362g.jpg
http://www.mediafire.com/imgbnc.php/34d784451e5008b0b8a8203bd537f2072g.jpg
http://www.mediafire.com/imgbnc.php/679908de6d6661feebbdc9308c348e342g.jpg


Message edited by Shadow703793 on 01-06-2008 at 08:37:03 PM
------------------------------ http://farm3.static.flickr.com/2617/3815217176_0a5be7955d_o.gif
http://farm4.static.flickr.com/3553/3818083596_1a772f7162_o.gif
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Shadow703793   01-06-2008 at 08:00:19 PM
- 0 +

Took me about 10 minutes to do every thing. The temps dropped from 89F to 84F. A 5F drop!.

------------------------------ http://farm3.static.flickr.com/2617/3815217176_0a5be7955d_o.gif
http://farm4.static.flickr.com/3553/3818083596_1a772f7162_o.gif
 Reply to Shadow703793
Shadow703793   01-06-2008 at 08:00:45 PM
- 0 +

The fins are Aluminum the heat pipe is polished copper(Inside and out). The RAM is Corsair Value DDR2 667. Everything is glued together with Arctic Silver Thermal Adhesive.


Message edited by Shadow703793 on 01-06-2008 at 08:03:42 PM
------------------------------ http://farm3.static.flickr.com/2617/3815217176_0a5be7955d_o.gif
http://farm4.static.flickr.com/3553/3818083596_1a772f7162_o.gif
 Reply to Shadow703793
Raviolissimo   01-07-2008 at 10:03:48 PM
- 0 +

well, i always admire homebrew work, including this
one.

what is the heat pipe doing, heat wise ?

if you want to have fins, to improve convection
heat flow, you can cut fins into the material with
a shear.

careful about sharp edges.

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 Reply to Raviolissimo
Shadow703793   01-07-2008 at 10:44:56 PM
- 0 +

^The Heat pipe is filled with Acetone. Without it I gained only a 2F heat drop, and with the heat pipe I got a 5F drop. A 3F difference ;)

------------------------------ http://farm3.static.flickr.com/2617/3815217176_0a5be7955d_o.gif
http://farm4.static.flickr.com/3553/3818083596_1a772f7162_o.gif
 Reply to Shadow703793
monste4321   01-08-2008 at 05:59:19 AM
- 0 +

howd you seal up the ends of the copper pieces?

Message quoted 1 times
Reply to monste4321
Groveling_Wyrm   01-08-2008 at 07:49:01 AM
- 0 +

Although it is cool to DIY, and I do admire your handywork, I personally can't trust myself to DIY cooling for my favorite ram, which is Crucial Ballistix 1066, which I regularly overclock to 1200. It got so hot that I burnt my finger on it with the factory heatsinks. I measured with my infrared thermometer and it read 138F. I ended up resorting to using Thermaltake CL-R0026 heatpipes. They lowered the temps down to 102F, which I am quite happy with, considering I am overclocking so much.

 

As far as your pipes are concerned, I do see 1 issue. Your pipes are not as long as the heatsinks. This leaves no area for a cooling area, where the acetone can cool down again. If it can't cool, then you aren't having as efficient of evaporation/condensation cycle. Thus, you aren't releasing the heat from the heat pipes as much as you could be.

 

Much like the Thermaltake solution, I would recommend using longer pipes that have an area that can be air cooled without contacting the heatsink itself.

 

Another issue is the pressure of the acetone. If you lower the pressure in the pipe, then the acetone should evaporate at lower temps, thus increasing performance. However, that requires vacuum and other equipment that I don't have, and is the primary reason why I can't DIY mine.

edit:typo in url...

Message quoted 1 times
Message edited by Groveling_Wyrm on 01-08-2008 at 07:51:19 AM
------------------------------ I suffer from A.D.O.S.
Attention Deficit..... OOOOOOH!!! SHINY!!!

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 Reply to Groveling_Wyrm
ouch1   01-08-2008 at 05:25:48 PM
- 0 +

I did something similar a couple years ago. But all I did was cut a P3 slot 1 heatsink in half, and used Intel thermal tape (P4 HSF aluminum tape type) & homemade metal clips. I am not sure of the temps but it allowed me to take DDR333 ram and push it to DDR400 without a problem.

-ouch1


Message edited by ouch1 on 01-08-2008 at 05:27:03 PM
Reply to ouch1
Shadow703793   01-11-2008 at 10:00:37 PM
- 0 +

monste4321 wrote :

howd you seal up the ends of the copper pieces?



The ends are crimped with a crimp tool.

------------------------------ http://farm3.static.flickr.com/2617/3815217176_0a5be7955d_o.gif
http://farm4.static.flickr.com/3553/3818083596_1a772f7162_o.gif
 Reply to Shadow703793
Shadow703793   01-11-2008 at 10:03:28 PM
- 0 +

Groveling_Wyrm wrote :

Although it is cool to DIY, and I do admire your handywork, I personally can't trust myself to DIY cooling for my favorite ram, which is Crucial Ballistix 1066, which I regularly overclock to 1200. It got so hot that I burnt my finger on it with the factory heatsinks. I measured with my infrared thermometer and it read 138F. I ended up resorting to using Thermaltake CL-R0026 heatpipes. They lowered the temps down to 102F, which I am quite happy with, considering I am overclocking so much.

 

As far as your pipes are concerned, I do see 1 issue. Your pipes are not as long as the heatsinks. This leaves no area for a cooling area, where the acetone can cool down again. If it can't cool, then you aren't having as efficient of evaporation/condensation cycle. Thus, you aren't releasing the heat from the heat pipes as much as you could be.

 

Much like the Thermaltake solution, I would recommend using longer pipes that have an area that can be air cooled without contacting the heatsink itself.

 

Another issue is the pressure of the acetone. If you lower the pressure in the pipe, then the acetone should evaporate at lower temps, thus increasing performance. However, that requires vacuum and other equipment that I don't have, and is the primary reason why I can't DIY mine.

edit:typo in url...

 

Agreed. This is aimed at RAM that doesn't come with any sinks (mostly cheap DDR2 667). Also you can substitute water for Acetone since Water has a higher Merit number in the range of 0-150 than Acetone. This was conducted as a side project for my Science Fair project for school. [My main science project is a new CPU heat sink design].


Message edited by Shadow703793 on 01-15-2008 at 01:10:37 AM
------------------------------ http://farm3.static.flickr.com/2617/3815217176_0a5be7955d_o.gif
http://farm4.static.flickr.com/3553/3818083596_1a772f7162_o.gif
 Reply to Shadow703793
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