Choosing a Power Supply

by Jim
(FL)

Yes, I have a comment. Total wattage is only one factor to consider when buying power supplies. A 400 watt PSU could allocate 10A to the 12V rail while another could allocate 20A. The former would probably not run your computer. Look at the amps for the 12V rail and beware if it is low. If you have a Pentium 4 or better (uses the 12V rail to run most everything), you probably need 15A or more. 20-30 sure wouldn’t hurt. Also the physical weight seems to correlate to quality. Heavier is better.