tomshardware.com had a review of 20 some-odd different power supplies. check it out: http://www.tomshardware.com/howto/02q4/021021/index.html --Patrick On Fri, 2002-10-25 at 10:40, John Hasler wrote: > Chip writes: > > I'm buying a new computer - upgrade option available to get 400w power > > supply versus standard 300w. Benefits?