I have an ASUS P4C800 deluxe mobo with a 128 MB sapphire radeon 9800 pro and a 2.8 GHZ pentium 4 processor with 2 gigs of PC2700 kingston memory. lately I've notice some of my games running a bit choppy. Madden '05 would get a little quirky after a while with chop and 'blurred' legs now and then, and MOHAA was acting a bit funny. I reinstalled directx 9.0c, and made sure I was running the most recent catalyst drivers too. No change. so I downloaded 3dmark03 and ran the standard tests that come with the free version. my CPU tests were incredibly slow. I entered BIOS and hyperthreading is enabled and it's running at the standard speed, not overclocked or anything special. My computer has spontaneously rebooted a couple of times a while back, I removed some software I had put on and it seems to have stopped, but I wonder if this is related. Is there any other way that I can 'stress' the CPU to test it without having to take it out and test it with another chip? It's annoying me and I don't want to have to go through the whole replace one part at a time bit.