Intel i7 - Turbo + C-State = Fail

[WeeMaan]

If you enable C-State in Bios then worked the higher turbo multiplier on one core (22*200), so that can be the problem

Okay, but are there any way of having C-State enabled but not the 22x multi?

The solution is to disable C1E

C1E reduces the voltage when the CPU idels, and if it doesn't switch fast enough when theres load again on the cpu there to less voltage for the desierd speed and you get a BSOD.

On gigabyte boards, C1E is disabled when you set manual votlages (even with the C1E option is enabled in the options menu).

You know if it's the same on Asus boards?
If it is then C1E does'nt matter, so we narrowed it down to C-State only.

Correct me if I'm wrong but does'nt C-State shut down parts of the cpu when they are not being used?
Does it do anything more than that?

[Hornet331]

Okay, but are there any way of having C-State enabled but not the 22x multi?

Disable turbo and multi 22 is gone (but also 21).
If you enable the c-states, by which i think you mean the higher states like C3,C6,C7, theres no way you can prohibit the cpu to go into multi 22x when turbo is enabled.

Its managed by the PCU in nehalem.

Also there are many different C-stats .

[WeeMaan]

Disable turbo and multi 22 is gone (but also 21).
If you enable the c-states, by which i think you mean the higher states like C3,C6,C7, theres no way you can prohibit the cpu to go into multi 22x when turbo is enabled.

Its managed by the PCU in nehalem.

Also there are many different C-stats .

Yeah, that makes sense. Because when I have turbo off then C-state or C1E works.
But i guess I will just have to have C-State and C1E disabled then.

Thanks for your answers.