I recently bought my boyfriend a qx9650 to replace his e8400. He has an XPS 630i. Everything in it is stock, not including the gpu and new cpu. He's having no problems just doing general browsing or streaming videos. When he games it's a different story. We can notice a difference in that the games are running much smoother than before, and an increase in fps. He's having a problem with the games freezing the system at random. He can't tab out or open the task manager and ends up having to do a forced shut down. They don't always freeze, but they freeze at least once a day. He's done stress testing and the hottest the cpu got under full load was around 65c. I know that's a little hot, but it shouldn't be enough to cause the freezing should it? It seems to lock up the most when he switches from one game to another. Ex: Today he was running FSX and got through a full flight fine with great performance. He switched to ME3 and shortly after it froze up. He restarted and has been playing ME3 for about an hour now with no problem. Can anyone suggest any fixes or bios tweaks we can make to get this worked out? I had him raise the cpu voltage to 1.3 and that made it a bit more stable. Any help is appreciated!