P-State/CPUFreq CPU Frequency Scaling Tests For Radeon/NVIDIA Gaming With Linux 4.16

The CPUFreq Schedutil configuration does surprisingly good with Unigine Superposition on the GeForce GTX 1080.

Here's a look at the overall performance-per-Watt for how things compare with the Linux 4.16 governor options on Radeon and GeForce GPUs while using an Intel CPU. Long story short, for Intel CPUs using P-State powersave/performance tends to all around be the most optimal while for those using CPUFreq (such as with AMD CPUs) generally the performance governor makes the most sense.

Here's a look at the AC system power consumption over the course of all the benchmarks run. CPUFreq powersave delivered the lowest power use overall, but the frame-rates often were unplayable. CPUFreq ondemand had delivered lower power use than the other governors but often with taking a slight performance hit. Meanwhile, CPUFreq Schedutil, P-State performance, P-State powersave, and CPUFreq performance all led to roughly similar power usage.