On Tue, 1 Mar 2005 11:13:10 -0600, Jack Surek <jsurek at mn.rr.com> wrote: > well-designed supply would not fail over the life of a computer--it would be > designed with parts rated at twice the voltage stress seen in worst-case > operation. One of my machines started to reboot periodically. Long, painful, multi-day story made short. By opening box and adding up amps by voltage, from each disk drive, fan, etc., I found I had for a long time pulling 18 amps 12v on a supply rated at 16 amps 12v. A modern Antec power supply with 28 amps on 12v solved the problem for me. I decided that amps by voltage rather than watts seemed the safer way to size a power supply. If my conclusion is incorrect, please explain.