One of the latest things I bought was a new case with 400W power supply, which came in at 50 or $79, mind you that was for the case as well. The reason I had to get a new power supply was because my new mb needed at least 350W and with having a pretty hot graphics card, 120Gb hd, dvd writer, a dvd player, 1Gb ram and a floppy, I thought I better err on the side of more is better. So it does really come down to what is going in your case either now or in the near future. Catlin