New to pelts... Couple Q's

Dark Ember · 08-06-2003, 04:19 PM

Heya guys, I'm new to both pelts and this forum! So... here we go.

I saw some people saying that you can't use 80 watt peltiers on a cpu anymore? I was wondering why that is.

Also, if 80 watts can't be used, woudl something like a 120 watt peltier be ok for say... a 2.4 P4 or so?

Thanks!

Dark Ember · 08-06-2003, 05:29 PM

Sorry, I guess I should expound on my question a bit. I understand that it is insufficient to really cool down moderm cpu's with an 80 watt peltier.. I am just wondering if the only adverse effect is insuffient cooling, or if there is some other reason. Thanks.

BO(V)BZ · 08-08-2003, 01:48 PM

Insufficient cooling is the reason. TEC's rated at 80W DRAW 80W, but don't provide 80W or cooling potential. I think, depending on voltage and the actual TEC used, that most TECs are about 70% efficient. Even then, that is under ideal conditions, so it makes sense to aim way high. If you are going to be cooling a CPU, I wouldn't bother with anything less than a good 172 watter. And if you are going to get a TEC watercooling setup and PSU, you might as well get a 226W.

Also, most modern CPU's dissipate ~100W, so an 80W TEC would fail, even if it was 100% efficient.

BO(V)BZ

Dark Ember · 08-08-2003, 03:18 PM

Yeah, i had found that much out. Somone on the hardforums answered my questiong though, that when the peltier fails, it becomes an isulator to the cpu, and then a get a dead cpu. Thats really what I was getting at. Thanks dude!

08-06-2003, 04:19 PM	#1
Dark Ember Cooling Neophyte Join Date: Aug 2003 Location: Boulder, CO Posts: 6	New to pelts... Couple Q's Heya guys, I'm new to both pelts and this forum! So... here we go. I saw some people saying that you can't use 80 watt peltiers on a cpu anymore? I was wondering why that is. Also, if 80 watts can't be used, woudl something like a 120 watt peltier be ok for say... a 2.4 P4 or so? Thanks!

08-06-2003, 05:29 PM	#2
Dark Ember Cooling Neophyte Join Date: Aug 2003 Location: Boulder, CO Posts: 6	Sorry, I guess I should expound on my question a bit. I understand that it is insufficient to really cool down moderm cpu's with an 80 watt peltier.. I am just wondering if the only adverse effect is insuffient cooling, or if there is some other reason. Thanks.

08-08-2003, 01:48 PM	#3
BO(V)BZ Cooling Neophyte Join Date: Apr 2003 Location: WI Posts: 53	Insufficient cooling is the reason. TEC's rated at 80W DRAW 80W, but don't provide 80W or cooling potential. I think, depending on voltage and the actual TEC used, that most TECs are about 70% efficient. Even then, that is under ideal conditions, so it makes sense to aim way high. If you are going to be cooling a CPU, I wouldn't bother with anything less than a good 172 watter. And if you are going to get a TEC watercooling setup and PSU, you might as well get a 226W. Also, most modern CPU's dissipate ~100W, so an 80W TEC would fail, even if it was 100% efficient. BO(V)BZ

08-08-2003, 03:18 PM	#4
Dark Ember Cooling Neophyte Join Date: Aug 2003 Location: Boulder, CO Posts: 6	Yeah, i had found that much out. Somone on the hardforums answered my questiong though, that when the peltier fails, it becomes an isulator to the cpu, and then a get a dead cpu. Thats really what I was getting at. Thanks dude!

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