AMD's site. System Builder Info. It links to pages giving Power Supply, Motherboard and Cooling recommendations, For Duron and Athlon Processors. Click on the "Configuration Information" in the box to the right. A good link to bookmark. http://www.amd.com/us-en/Processors/TechnicalResources/0,,30_182_869,00.html PC Power and Cooling's site. They make Great Power Suppplies. For a FULLY configured machine I would recommend a good power supply with MORE THAN 300 watts. I use a Turbo Cool 450 watt switching power supply. It only uses the power that it needs. http://www.pcpowercooling.com/home.htm ----clip What do you folks out there recommend for power supplies for a Duron 950, an Athlon 1.2 and an Athlon 1.3? (I am running a build a computer club). All but one of us aren't into games too much. The one young fellow (Athlon 1.3) is. 300W be enough? 350W? Dare I say 400W? Thanks Paul Ecclestone Success comes in cans, failure in can'ts The NOSPIN Group provides a monthly newsletter with great tips, information and ideas: NOSPIN-L, The NOSPIN Magazine Visit our web site to signup: http://freepctech.com