Hi guys, I have my CPU up to 3.9GHz and ran through 3dMark2k6 with no prob. However, when I run Bioshock (game) for about 15mins, sometimes it will lock up, but Vista is still running fine and can recover. My question is where should I be focusing my efforts? CPU volts, or NB volts, ram volts, or ram timing? I think I can make this system stable and I will be very happy with 3.9GHz! TIA