Will low power CPUs bring back TECs?

[zipdogso]

I like the 320W undervolted idea a lot. My guess is that would be good for about 180watts @ full blast 12vdc so in theory it should work. Without calculating it out of course.

You missed Uncle Jimbo's point here... he was saying if you used it at 5v you could get an appreciable amount of cooling from it at a high COP and the current draw would be low enough to power it from a molex in your main rig. The problem will be fitting a 62mm TEC to the CPU, you will need to use both a cold and a hotplate and you will need to check you have sufficient clearance around the CPU socket. I havent checked the actual heat pumped at 5v but I assume since UJ mentioned it it would be high enough for an overclocked intel 2 core especially with their low TDP...which was the point he was making originally on starting this thread....he hadn't really intended to include i7's.

TBH my favorite setup is the undervolted TEC sandwich. Sure it's a lot of work but the efficiency and capacity is really what makes it the way to go IMO.

Are you referring to stacking TEC's ? You make it sound like you've tried it...but if you had.... you would know it doesn't work. In stacking the efficiency IS dismal and capacity is a joke, not sure where you got these ideas from. Stacking is only for very small TEC's, much smaller than any we use for computers. There is a anomaly in stacking TEC's that makes it use with TEC's we use pointless or indeed sometimes impossible.

Undervolting is best undertaken with single, high Qmax, TEC's connected in groups in series or parallel.