I agree about the problems caused by the unwillingness of NVIDIA to document their clock frequency/supply voltage control. Unfortunately this is a widespread p

I agree about the problems caused by the unwillingness of NVIDIA to document their clock frequency/supply voltage control. Unfortunately this is a widespread policy at the majority of the vendors of CPUs and GPUs. At those where this causes less problems for open-source drivers, they do not really provide direct control for the user, but the frequency/voltage control is done by some microcontroller with undocumented firmware.