Ive been working on OC'ing my watercooled X2 3800+ on my DFI NF4 Ultra Infinity. My chip maxes out around 2.75Ghz at 1.55v, Im not having any problems with it. Ive got a pair of 512mb Crucial Ballistix PC4000. For some reason, it fails prime95 within one second, even at 240mhz 2.8v 2.5-4-4-10(thats SPD for 250mhz). It posts and gets into windows, but It isnt stable at all. I put a fan blowing on the sticks so they stay cool, and Ive tried more voltage. I took the CPU out of the question by dropping the multi real low. Im just overclocking the ram and motherboard now. Nothing seems to get these stable. Im not even overclocking them yet, and its not stable. Im out of ideas, and I really want to get this system running at what it should. Any ideas?