cpu voltage

Mitrailleuse · July 17, 2013

Hey,

when i set my voltage to 1.2 for example,it would stay stuck that way even if all the c states are enabled,

so i heard i should use vcore offset instead of changing the voltage directly,is that true?

im using a 4670k and a z87x-d3h and the voltage offset is greyed out in the bios,but i can change it using intel extreme tuning utility,should i use it?

i also have an option to for "core voltage mode" where i can choose adaptive instead of static,and my core voltage goes down to 0.708 the lowest when idle,is that ok?

thanks

Morfy · July 17, 2013

Ofcourse is not changing, you have it on static, try adaptive.

Mitrailleuse · July 17, 2013

Ofcourse is not changing, you have it on static, try adaptive.

i also have an option to for "core voltage mode" where i can choose adaptive instead of static,and my core voltage goes down to 0.708 the lowest when idle,is that ok?

that when putting it on adaptive^^

Morfy · July 17, 2013

Yes, it is ok, that's why i said adaptive.

Mitrailleuse · July 17, 2013

Yes, it is ok, that's why i said adaptive.

anyway,is there a reason i cant use voltage offset to overclock on my board?

GamerDad · July 17, 2013

For starters, you need to set CPU Core voltage mode to adaptive as already stated. Then you have to make sure your Intel C-state options are enabled with EIST. EIST or "Enhanced Intel Speedstep" is P-State power management that controls your processor while it is active while C-States controls the processor when it is inactive (idle). Intel doesn't recommend disabling these settings unless directed by one of their representatives.

Haswell works a little differently than Ivy Bridge does. The processor has built-in VRM which is called FIVR (Fully Integrated Voltage Regulator) so the CPU multiplier and voltage will drop or rise at the same time. This is what is causing overclocks on Haswell to be limited.

Leaving VCore on Auto in your BIOS will result in the CPU over compensating at times and that's why you're getting the results you're seeing. Using offset is necessary to offset the effects of the built-in VRM.

Hopefully this answers your question.