Originally Posted by dizzy4
ok so the COP seems to be around 0.75 no matter which peltier is used at ~70% efficiency. I assume this is why most people go for higher wattage peltiers, so that when run at a lower amperage the COP would be much higher (around 1.5 at %45-55 Imax).
This would mean les heat moved, but with a COP of 0.75 wouldn't the system be more efficient without a peltier?
You pretty much got it on the head...this is the major flaw with direct die cooling but due to space constraints it is very difficult to use more than 1 TEC so it something you have to live with.
And of course they need to be so powerful as IRA said for a quad nothing short of 437w is usable. But DON'T try factoring in too much overclock. With duo's 226w (12726 or 12724.) is a good one allowing up to 4.3Ghz overclock for an e8400 possibly a e8600.
You can only really get the COP with a water chiller like Ultrasonic2 on here. You need multiple high Qcmax TEC's with a good (high) voltage/amperage and in general they aren't cheap. But the are no commercial parts around to build one so it is DIY all the way, and that can be expensive too especially if you need to buy tools.
The thing with the peltier is with good insulation you can, if the TEC is correctly setup get colder than water unless of course you live in a country with a very low ambient....
EDIT - in my honest opinion with a i7 or phenom, if you live in USA with dirt cheap A/C a modded window/wall A/C is the way to go on the cheap, if you got the money go full phase.Edited by zipdogso - 2/28/09 at 6:50pm