Originally Posted by HaitusClock
I've heard mixed things about this, what do you recommend I adjust besides Vcore?
Another thing, I posted about this but no answer. CPU-Z is consistently giving me a voltage that's .012 higher than what's on both the bios and on AIDA... not sure which I should trust?
For example, since I can't find the screen shot, I had 4.4 @ 1.25v running great for the past few hours playing BF3/Streaming GW2, but I notice while testing CPU-Z had it recorded at 1.264-1.268 the whole time. AIDA had it 1.248-1.252. In BIOS the override was 1.250. I put the Vcore up to what I had it at before (1.268, what CPUZ had it at) but same thing. CPU-Z has it at 1.28.... Aida still 1.268. Anyone know if CPU-Z is appropriate for reading voltages with Haswell?
Looks like something to do with the adaptive voltage and power saving features of the CPU, but CPU-Z is still reading voltages correctly. For me, it seems that whatever Vcore I set in BIOS, a stress program like Prime95 or Linx will raise it by 0.2 V (after reading that article above, this is expected). If I'm in idle or non load state, my voltage drops to 0.76V. I currently have C1E, thermal monitor, EIST disabled and C3/C6/C7 enabled.
I have manual settings for Vcore, Vring, VCCSA, VIOD, VIOA, and everything else is auto. In your case I start with very low RAM speeds, and only set manual settings for Vcore and keep everything else auto at first (if you cannot even boot to desktop you might want to raise VCCin a bit above the auto setting). Then, once you have your desired CPU clock, I would start to experiment with the uncore/NB/RAM frequencies, and add the other voltages to stabilize the IMC if you want higher RAM speeds.Edited by Nuck - 6/11/13 at 10:07pm