I have this problem with the p5w dh deluxe and my qx6700. I've updated to the latest beta bios and cleared cmos, but I still can't set the multiplier beyond 10x. I know a lot of people are having this problem, and asus still hasn't released an updated bios, but does anyone have a solution? I'm stuck at 3.4 GHZ and would love to go beyond that with a higher multiplier.