I7 auto Vcore behaviour

[2March]

Hi all,

I was looking into setting up my I7 to run all energy saving options on auto. Untill now I had turbo and speedstep on but no C-state and Vcore on 1.24 (180x(12-21)).

I'd love to have this system control Vcore and C-state itself so I did some testing today:
2.66GHz - Vcore=1.048V (1.28V full load)
3.33GHz - Vcore=1.232V (1.248 full load)
3.6GHz - Vcore=1.408V (1.432 full load) with loadline callibration disabled it was 1.408V/1.35V...

Guess I won't be able to run with Vcore on auto and to use C-state. I need such a high Vcore to be able to run one core on 4GHz that it is not worth it. Temps at 3.6 got over 90 degrees! I wonder what component in responsible for ramping up the Vcore so aggressively. I need only 1.24Vc to run stable at 3.8GHz (180x21)...

 

[Cattykit]

I use Asus p7p55d with i7 860.
C1E, C6 State, and Phase power saving mode is enabled. In other words, all the power saving features are enabled except EIST.

I also use vcore offset of 0.1something and LLC is off.

Here's how it runs on mine:
3.71Ghz - Vcore= 1.064 idle (1.280 full load)

I've never tried using Auto offset vol. because AUTO vcore would always put too much voltage. Just find a working offset vcore value and use that one instead of AUTO.

 

[2March]

I'm running on a X58 Motherboard ASUS P6T-DL. Haven't seen an option fo offset yet. But maybe a BIOS update would be prudent.

And running without EIST is not an option.