Thanks guys, good feedback! For those keeping score, my stepping by the way is: LCBQE
So far, I'm rock solid with default voltage at 2808. Actually...it was stable at 2871(319x9) also, but would not post at 2934(326x9), even after bumping the voltage up several times. So I backed it down to 2808 (312x9). I'm perfectly happy with that speed.