6. Power consumption, CPU temperature
Here we measured the power consumption of the entire PC system with each different CPU installed, during the CINEBENCH R15 / CPU and the Premiere Pro CC 2017 benchmarks.
Our goal was to give you an idea as to how much power each configuration used while idling at the Windows desktop and while under a heavy CPU workload. Keep in mind, this is total system power consumption being measured at the outlet with only the processor loaded and not the the individual power of the CPUs alone.
These power consumption numbers are very interesting. Though the Core i9-7980XE and Core i9-7960X have 60 - 80% more cores than the Core i9-7900X (18 and 16 cores vs. 10 cores), they consumed only about 30 more watts under load. Somehow the additional cores on the higher-end Core X-series processors do not push power consumption much higher. The i7-7960X had the higherst power consumption in the specific benchmarks and the Threadripper was more power efficient.
In terms of CPU temperature, the differences among all the processors of the tes were very small, with the Core i7-7900X to run a bit hotter.