One thing to watch with the p5q series is the auto or lowest manual voltage settings, particularly on earlier bios's. for 3.6 i have the pll, fsb term, and nb voltages @ +0.02v above auto, and my ram which is rated at 2.1-2.2v i run at 2.02v rated timings of 4-4-4-15 again due to overvolting with this board.