Here's what I'm running. Athlon 900mhz @ 963mhz Four 10" Neons Six 80mm fans One 92mm fan DigiDoc5 ... and the basics SBLIVE, HDD, 3.5, CDR, DVD. All this is running on a Delta 185w PSU. The machine has been running continuously with all the above except the DD5 (that's only 1 week old) for almost 750 hours without a single problem. I even ran a SiSoft burn in test to heat it up. Maintaining 5.13v and 12.04v I think my little 185watt PSU is a real bad*ss.