Quote Originally Posted by Blauhung View Post
I had to bump Vcpu up above 1.4V before i could start working my way up. 4.5GHz took 1.425V in BIOS to be stable.
Thank you

Quote Originally Posted by Sam_oslo View Post
Intel recommends absolute max vCore=1.4v for 32nm, but it is a good idea to keep it under 1.375v for 24/7.

Those early BSOD in prime, that vCore increase doesn't help them, are usually related to IMC/Uncore. Usually it needs more VVT for that specific Uncore multi/frequency.

Whatever you do, don't run with VVT=1.6v for 24/7. VVT is a bigger killer/degrader than vCore, and nobody knows the long term effect of high VVT on 32nm yet. Besides, even if it doesn't kill/degrade your chip, it will add a lot of heat to your CPU and VRM. Save those heat for higher OC by reducing the VVT. Try to reduce the Uncore multi/frequency, then you would need less VVT.
Intel recommends max-VVT=1.4v, but try to keep it under 1.34v to secure a long life, and less torture and heat, for your CPU.
Shortly, try to use x16 or x15 multi for Uncore. What kind of Uncore multi are you using?
My VVT of 1.6 was actually set automatically by the X.M.P. profile in BIOS for my Corsiar 2000 MHz RAM. It also set my BCLK to 143, which I left alone and just started raising my CPU Ratio Setting (30 now). Should I start backing this VTT down incrementally until it loses stability that way before going any further?

The UCLK Freq I just had set to Auto and it doesn't look like BIOS is telling me what it will be. CPU-Z didn't mention UCLK either. Is there another way to determine what it is being set at? I know it's supposed to be at least double the DRAM Freq (which is 2006 MHz). Should I just manually set the UCLK to 4014 MHz or something (that is the lowest that is 2x the DRAM) instead?