I also have a slight problem with this board if anyone knows the answer?
When I cold bood I get this message "Error! The CPU to Bus ratio or VID configuration has failed" although if I F1 and exit and carry on into windows the pc is 100% stable, just this message at the beginning of every cold boot. I can't seem to find a fix for it and its anoying me. grrrrrrrrrrrrrrrrrrr!
I had the same thing, for me upping vcore a tad cured it. But it was stable at the lower volts.