I've been playing around with my i7 920. I was able to get a modest 3.4ghz @ 1.100 volts. Today I bumped the Vcore to 1.200 and i have a stable 3.8ghz that's been stressing for 7 hours now (oddly its at the same temps @3.4ghz)
In my BIOS I set the Vcore to 1.200. But at 100% load, CPU-Z is showing my core voltage is @ 1.144.
Am I able to drop by BIOS Vcore just above the threshold of the CPU-Z reading?
For reference, I did not enable Load-Line Calibration.
To answer your question, No you cannot adjust the BIOS Vcore to match (or be slightly higher than) the CPU-Z Vcore reading. Though you could increase load-line calibration to lessen the effects of Vdroop
Software are not accurate, cant solve that... AIDA64(Which is the best in my opinion) shows 1.328v awhile in BIOS it's 1.34v...
How is it possible for you to get 22x multiplier??????? Also how did you even get 3.9GHz with 1.18v? You must got the best processor(In i7 9xx)... I hope you can show us if you can get 5GHz with 1.4v-1.44v
EDIT: You can use HWMonitor which should show your Vcore voltage when run max... So far HWMonitor is showing 1.34v for my voltage...
CPU-Z is generally pretty accurate, its just really differcult to get the same Vcore value in CPU-Z as you have in the BIOS as your motherboard would need very high quality power phase design and 100% LLC.
I think (not 100% sure) that the value in CPU-Z is what is being pushed through your CPU rather than what its set in the BIOS.
Oh and well done on your overclock, although you haven't got HT on, its still a very good CPU, my old Core i7 950 needed 1.41V for 4Ghz
@omgitzfatal Everything you said is on point. I turned HT off since I only play SC2 which does not utilize the extra threads.
I finish reading the post on Vdroop... twice ... I'll assume since I don't have a background in EE may be partially why I had difficulty understanding it.
I may be talking out of my rear but what I got from it was Vdroop creates an upper and lower bound providing a narrowed window of voltage to feeding stable power to the CPU. (okay, i really didn't understand it at all, please correct me)
Ran AIDA64 - seems consistent with the other programs.