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Welcome to OCN!

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2,395 Posts

Can it cool it? Yes.

Will you have great temps? No.

What GTs? AP-15?

Will you have great temps? No.

What GTs? AP-15?

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Now, let's first assume that the 120.2 radiator will dissipate exactly 2/3 of the power as the 120.3. Furthermore assume that your GPU + CPU together put 450w of heat into the loop.

At 1000 RPM & 10C Delta:

350w*0.66 = 231w

Now divide into the delta = 23.1W/C delta.

450/23.1 = 19.5C water-air delta. That is totally unacceptable, you're going to have to use faster fans.

At 2800 RPM & 10C Delta:

867w*0.66 = 572w

Divide into delta = 57.2W/C Delta

450/57.2 = 7.9 C water-air delta. This is totally reasonable and where most people aim to get their air-water delta.

So that rad would totally have enough cooling power, provided you used 3k RPM fans. My suggest would be to get two Ultra Kaze 3k RPM fans, and configure them to run based on the temperature of the water. When you are idling you should be able to have the fans running around 1000 RPM, at which point they are pretty quiet.

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It can cool it, but temps probably won't be very good unless you get stronger fans.

@charliehorse55 think i get it but the math is somewhat confusing. Do you know where i could find a detail walk-through for deltas and all the brain heavy stuff?

@pewpewlazer yes they are AP-15's

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Originally Posted by The Cheev @charliehorse55 think i get it but the math is somewhat confusing. Do you know where i could find a detail walk-through for deltas and all the brain heavy stuff? |

Watts = kD

where k is a constant relative to the radiator and fan speed, and D is the temperature difference between the water and the air. Thus, if the air temperature is 25C, a radiator with 35C water flowing through it will dissipate double the heat of that of the same radiator with 30C water. This is because the temperature deltas would be 10C and 5C respectively.

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