peltier cooling of mb back

JaRoD · 01-21-2007, 09:23 AM

Just recently I got an idea on how to help cool the cpu with a peltier while still using a normal heatsink. By putting the peltier on the backside of the motherboard just behind the cpu. Then putting a thick plate so the heat is transfered to the side of the case so that is used as a heatsink. Probably best to run the peltier at 5v or something since heat probably wont spread that well on the sidepanel. I'd try it but I'm not sure I'd want to cut up my new case

Tried something similar on my graphics card and it lowered temps by about 2c but there was only a tiny 50*50*20mm pinned heatsink ontop of the peltier and it was only attatched with paste

And I used blutack to attatch the peltier to the card since there where some smd components there.

So, anyone feel like doing some case cutting so I won't have to?

bigben2k · 01-22-2007, 03:07 AM

It's a good idea, but probably not practical / efficient.

You report lowering your GPU by two degrees, but the topside cooler can yield improvements of 20 degrees (depending on card and cooling solution). That should be a good tip that this idea may not be all that it's worth.

Still it might be worth exploring.

I posted the idea of a CPU backside cooler a long time ago (never actually did it):
http://forums.procooling.com/vbb/showthread.php?t=5438

JaRoD · 01-22-2007, 04:43 AM

Forgot to mention that it was a 80w 16v peltier running at 5v. So considering it's low cooling ability at that voltage I'd say it was pretty good. That that tiny heatsink was probably around 35-40c too. So I'd say it's pretty easy to get it atleast a few more degrees cooler.

01-21-2007, 09:23 AM	#1
JaRoD Cooling Neophyte Join Date: Jan 2006 Location: Finland Posts: 2	peltier cooling of mb back Just recently I got an idea on how to help cool the cpu with a peltier while still using a normal heatsink. By putting the peltier on the backside of the motherboard just behind the cpu. Then putting a thick plate so the heat is transfered to the side of the case so that is used as a heatsink. Probably best to run the peltier at 5v or something since heat probably wont spread that well on the sidepanel. I'd try it but I'm not sure I'd want to cut up my new case Tried something similar on my graphics card and it lowered temps by about 2c but there was only a tiny 505020mm pinned heatsink ontop of the peltier and it was only attatched with paste And I used blutack to attatch the peltier to the card since there where some smd components there. So, anyone feel like doing some case cutting so I won't have to?

01-22-2007, 03:07 AM	#2
bigben2k Responsible for 2% of all the posts here. Join Date: May 2002 Location: Texas, U.S.A. Posts: 8,302	Re: peltier cooling of mb back It's a good idea, but probably not practical / efficient. You report lowering your GPU by two degrees, but the topside cooler can yield improvements of 20 degrees (depending on card and cooling solution). That should be a good tip that this idea may not be all that it's worth. Still it might be worth exploring. I posted the idea of a CPU backside cooler a long time ago (never actually did it): http://forums.procooling.com/vbb/showthread.php?t=5438 __________________ WBTA (Water Block Testing Alliance) Nordic Hardware WC 101

01-22-2007, 04:43 AM	#3
JaRoD Cooling Neophyte Join Date: Jan 2006 Location: Finland Posts: 2	Re: peltier cooling of mb back Forgot to mention that it was a 80w 16v peltier running at 5v. So considering it's low cooling ability at that voltage I'd say it was pretty good. That that tiny heatsink was probably around 35-40c too. So I'd say it's pretty easy to get it atleast a few more degrees cooler.

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