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Fractal Design Celsius S36 Liquid CPU Cooler Review

By: Chad Sebring | CPU Liquid Coolers in Cases, Cooling & PSU | Posted: May 10, 2017 2:00 pm
TweakTown Rating: 93%Manufacturer: Fractal Design

Chad's CPU Cooler Test System Specifications

 

 

 

To see our testing methodology and to find out what goes into making our charts, please refer to our CPU Cooler Testing and Methodology article (October 2016) for more information.

 

 

Thermal Results

 

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Just slightly less than four degrees out of the lead, the Celsius S36 is still twenty-four degrees cooler than the stock cooling solution. At this time the Celsius S36 performs better than most other AIOs, in silent mode, but the X62 does prove to be a degree more efficient with the stock settings of this processor.

 

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At this time, we have the processor overclocked, but we are still allowing the PWM circuitry to control the fans and pump. We found the Celsius S36 to outpace all other AIOs in the chart, as they use silent mode, but performance mode usage put the S36 in a solid fifth place overall, using AIOs without the ear bleeding fans at maximum.

 

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Setting the fans and the pump to full speed, we were able to squeeze out another two degrees worth of performance from the S36. This says a lot for the PWM curve which is used, as it does not leave much on the table, and considering the noise level to achieve this, we are more than happy using the PWM functionality.

 

We also ran all tests in the AUTO position on the head unit. We found that across the board, the pump is sped up, and the fans are slowed, which keeps noise at bay, but also raised our results two to two and a half degrees across the three levels of testing.

 

 

Noise Level Results

 

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In our stock run of testing, with PWM controlling the fans, when the processor heated up, the fans were delivering 32 dB of noise into the room. This does not appear to be that good looking at the chart, but this isn't as annoying as what was to come. At the time we took this reading, we saw the fans to be spinning at 900 RPM, while the pump was at 2000 RPM.

 

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The noise does start to present itself more when we applied the overclock to the processor. At this time we saw the fans spinning at 1258 RPM, while the pump topped out at 2556 RPM. At this time, we still could not hear the head unit, but the 40 dB of noise the fans were making was noticeable for sure.

 

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Allowing both the fans and the pump to run at full speed, we still could not pick up on the head unit, and that is mainly because the fans are droning along at 65 dB at this time. The fans topped out at 1940 RPM as seen in AIDA64, and the pump speed went up to 2950 RPM.

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