Originally Posted by Syan48306
Oh please, when you've got 5 radiators and 3 graphics cards in your system pulling over 1000W, are you really that concerned about inefficiencies? Just think of it as a nice little electric space heater during the winter.
The other option is to go phase change which just as if not more inefficient.
Thermoelectric cooling is horribly inefficient.
Also, if the cooling system isn't able to keep a very slim temperature difference between the hot and cold side, it really isn't that beneficial. Which is hard as heck, considering the truckloads of heat waste they produce.
A load tuned single stage phase change system can easily bring a current processor to -50ºC at full load with a proper gas mixture.
A TEC system with similar power consumption will have quite the trouble to even bring the processor below the dew point, if below ambient at all.
The phase change will cool itself with a relatively small 20x20x5cm condenser. A TEC cooler with similar cooling power will need a radiator box of its own.
Then you have to account for the dedicated PWM PSU and control units, which add to the cost.
On the other side, besides a cooling loop failure, the TEC doesn't need to be refilled, poses no possible risk at all to your health (except the hot loop stopping working, blowing a gasket and spraying steam XD), and with a large enough radiator surface it isn't any louder than your average water loop.
But electricity-wise, TEC cooling isn't worth it, at all.