I have a system that is getting rebuilt. It currently has an old Antec PP-303X 300W ps. See specs here.. I plan on replacing the memory, cpu, and mb with an Epox 8RDA+, Athlon XP 2500, and 512 of pc3200 ram. I also will be running a Maxtor 40GB hd, network, dvd. There won't be any extra...