I have an older MSI K7T Pro motherboard, and an American Media Systems 300W PSU. On AMD's site, the MB is listed as being able to handle 1.1 GHz, and the PSU is listed at 1.0 GHz. I'm running 800 MHz now, but I would like to get a cheap upgrade on my system. Will a 1.2 GHz chip run well, or should I select a slower model? I only have one 7200 HD, and 2 CD drives on the system, so the load shouldn't be too high. Any experience anyone has with this would be helpful.