H60 on AMD A8-5600K, high temperatures

QQuark

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May 28, 2013
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I'm using the Corsair H60 to cool my CPU, and I have made sure the pump and everything are working at the proper speed.

I'm seeing the included fan running at Max at ~1900 RPM, and I'm seeing the pump showing 4066 RPM, which I understand is a "normal" reading for this pump.

I'm using an ITX build (Fractal Node 304 case), but I'm running it open for right now, and nothing SEEMS hot.

Yet, even so, I'm seeing idle temps of 41-43C and Prime95 temps creeping up to 80C. The only manual clocking I've done has been to pull the voltages down to 1.3V from the 1.4V I think is normally put on the standard 3.6GHz clock speed.

Again, nothing SEEMS hot. With these temperatures on my other builds, I would normally feel warm air, or I would expect the radiator to heat up.

I've reseated the H60 already, to absolutely no effect, and I've already crosschecked my temperatures with HWMonitor (the "package" reading is consistent with the Coretemp reading).

Ambient temperature is ~23C

What could be wrong?

EDIT: On a whim, I slightly tightened down the screws attaching the H60 to the CPU, and I saw a 5C drop in temperature during load (max at ~75 C now after Test 6 on Prime95).

EDIT2: Since ensuring that the cooler was fully tightened, I've had temperatures at about around the low 70s. Besides this, I was unable to improve the temperatures. I'm probably going to get some PK-1 and see if that will improve. Still hoping someone here has some insight.
 

mattius92

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Aug 27, 2010
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The 5600k is a 100W CPU, when it is not overclocked, overclocked it can be much higher then 100W. So that in itself means your CPU is gonna be hot. The H60 is good, but not as powerful as an H80, H90 or H100.

Where do you your radiator mounted? Also try using some Arctic Silver 5, its the best thermal paste there is.

How do you apply the thermal grease?

These things can add up.

However, in the end, a max of 75C is still a safe temp.
 

QQuark

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Thanks for the response.

I have the radiator mounted on the back end of the Node 304. Right now I've set it up for cool air from outside to be pushed through the radiator. Since I've been running it open for the time being, this should yield the best results.

Since the interface between the CPU and the plate is square and smooth, I just put a dot of TIM in the middle of the CPU, seat the plate, and rotate about 30 degrees in each direction, with a little bit of a sliding motion in order to ensure full coverage (which, based on the appearance of the TIM on the CPU, seems to have occurred).

I think you're probably right about this type of CPU just running hot. I'm currently picking up some Prolimatech PK-1 (on-par with AS5), and I hope that will improve matters.
 

catshannon

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May 31, 2012
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I never recommend Single rad water coolers for CPUS the best thing you can do is run it in push/pull with another fan.
Also i suggest buying some fans that are optimised for static pressure like the SP120s by corsair or Noctua NFF12s
 

mattius92

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Here is my solution, first off, reverse the airflow in your case, like you have said, making the rear 120MM fan a intake fan, and have the front 92MM fans exhuast fans.

Buy a pair of 120MM, high-performance fans, such as a Cougar Vortex, or a Corsair SP-120. Create a Push-Pull configuration on the radiator, using identical fans, get PWM fans if you want them to adjust speed to how hot your PC is.

This setup should hopefully pull more fresh air through the radiator.