Is it possible to programmatically determine the parameters of the CPU, GPU?

Question

Programming

Is it possible to programmatically obtain the clock frequency, bit depth, number of cores, registers, cache memory size of all levels?

Answer 1

Yes, I have. Otherwise, how would CPU-Z and analogues work.

Answer 2

Can. Article with explanations and examples https://en.wikipedia.org/wiki/CPUID

Answer 3

On C it is possible, but for different OS different api: if linux, then PosixAPI, if windows WinAPI. Accordingly, these APIs provide a programming interface to low-level calls.
It is possible and not only in C, but it is more convenient on it