As far as I know there were issues with modern CPUs powersaving in Linux. Step one: what are intel CPUs and how much their differ? CPU names:
- Sandy Bridge (2nd gen)
- Ivy Bridge (3th gen)
- Haswell (4th gen)
- Broadwell (5th gen) (IAMT, aka IME, has been moved to CPU)
- Skylake (6th gen)
- Kaby Lake (7th gen)