Needed Pelt power?

[WaterPeltNoob]

This is my first time doing a water/pelt combo. I've done air/pelt before and that didn't work out well. I have a BIX with 295 gph pump cooling a Maze 4-1. I am running a celeron 2.0 right now but plan on upgrading to a P4 2.8 Prescott in the near future.

What kind of pelt power would I need to get sub or near sub zero temperatures?
I've been reading around and so far I've come up with a 226 watt pelter pumps out about 100 watts of heat. 15 volt rating / 12 volt input = 0.8
0.8 * 226 watts = 180 watts
180 watts * 0.55 efficiency = 99 watts.
Are these correct? I've also seen advertisements for 170 watt pelts used on intel chips but haven't seen any reviews.

[Player0]

Hi, welcome to the forums.

What kind of pelt power would I need to get sub or near sub zero temperatures?

The biggest one you can find. Depending on your overclock, even reaching 0 can be a pipe dream. Go with at least a 226, and there are some new 360w peltiers out, but they aren't readily available yet so you'll end up paying through the nose.

Your efficiency reduction is wrong. Yeah, you'll loose some due to the TIM, but its not 50%. A 226w peltier probably has 160-170w capacity, and will be more than enough.

Your final temperature is determined by the delta T between the temperature of the hotside and coldside of the TEC. This dT rating is itself based on the amount of wattage the peltier can move (in this case, 170w) minus the amount of heat load applied (80-120w for a CPU). Ideally, you want a peltier wattage of 2x or greater than the input wattage to achieve good results, such as running the 226w peltier on a 15-16v power supply.

One of the largest factors on your temperatures is actually how well you cool the hotside of the peltier. There arent many decent pelt blocks around. SwifTech, AquaJoe, and Dangerden are some good ones in the states that I have used with good success.