I just got my ASRock 990fx Fatal1ty Pro Motherboard, and I nioticed that it allows for a higher CPU-NB clock over the ASRock 970 Extreme3 mobo I use to own. I have my CPU-NB set to 3122mhz and with 1.4v, The CPU is at 4125mhz and runs rock soiled on this board at that, 6 hours primed. Seems to run alright at 1.4v on the CPU-NB, but I been reading around and got a lot of mixed reviews about this. Some will say don't go past 1.3v or CPU-NB can go as high as 1.55v like the max safe vcore on this CPU.
I wanted to see what other think of it being at 1.4v, I still have tweaking to do on this board, I could go lower on the volts I do believe, but had work and other things at the moment.
Funny this new board I can keep a near constant vcore, Most I seen it go up to is 1.52v, I have it set to 1.5v for 4.1ghz. Runs even cooler, 56c max for 6 hours isn't bad for the H100. Anyway thanks, Specs below:
CPU: AMD Phenom II x6 1100t 4125mhz 1.5v
MOBO: ASRock 990FX Fatal1ty Professional
RAM: 8GB Corsair Vengeance 1789mhz (Upgrading to 16GB 1866mhz CL9)
VIDEO: 2x ATI HD5850 Crossfire
PSU: Corsair GS700
CASE: Coolermaster HAF 912 (Yes the H100 Can fit with push/pull with a little bit of modification)
Nope its not, I read around and found an interesting topic, The CPU-NB in fact can take as much Volts at the Vcore, so it can take up to 1.55v. Also at my current temp I could run 1.6vcore and keep the 1100T below 60c, so but there is no point as my chip need 1.55v for 4.3ghz.