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CPU Temperature
CPU Temperature Overview
ASRock runs the Ryzen 9 3900X on the bare minimum of power and the result is very low CPU temperatures. Admittedly we were using a 360mm Fractal Design Celsius S36 cooler but it is clear we could have used a 240mm cooler without any difficulty. When we think back to the early days of Ryzen 7 and X370 these sorts of temperatures are simply amazing to see.
CPU Power Draw
CPU Power Draw Overview
As we show in our video, it came as quite a surprise to see that mildly overclocking our Ryzen 9 3900X to 4.2GHz resulted in a small decrease in power draw. We did not expect the test PC to be stable and were fully prepared to increase Vcore but the system behaved itself and no further action was required. Perhaps we got lucky or perhaps the ASRock BIOS writer did a particularly fine job but whatever the explanation, this was a fine result.
VRM Temperatures
VRM Temperatures Overview
We covered the VRMs in some depth in our video due to the lack of information in any monitoring utility. Our thinking was that if ASRock didn't have decent temperature sensing then perhaps there was something to hide. As you will have seen in our video the opposite was true and the DrMOS arrangement with doublers did a superb job. By the end of our benchmarking we were confident the ASRock designers have delivered fine results as the CPU uses very little power and the VRMs run just as cool as you could possibly hope.
