Hey guys. I recently recieved 2 X 256 sticks of Corsair XMS pc3500 cas2. I have a KR7A-Raid mobo with an AMD XP 1900+ agoga stepping. I have the chip unlocked with 11.5 multiplier, but when I raise the fsb to 145, my system will not boot. I have raised the voltage to the cpu to 1.8v but it still locks. Could this be happening because the board "supposedly" only supports an AMD XP 2000+ and I am surpassing its speed?!?