i really don't think you need 1.7vsb, and hopefully not 1.65vmch either. i wouldn't trust that board to last more than a couple of months at that vmch


edit: you have an e6700.. because of the nature of the p5b, you'd get better performance if you used the max stable multiplier at 400fsb. I'm guessing 9x400=3600 you can probably get stable.