Fortron power supplies are more durable, last longer, and provide higher overcapacity (over the rating) than Antec. I recommend their 350W unit for most users at it outputs over 400W and has a nice 120mm fan. The next model up woult be their 400W, then their 530W. Other sizes (460W, 550W) are server supplies and have a longer than standard connector. So 350W, 400W, and 530W are you choices, the $42 350W unit is more than enough for my system (P4 2.6@3.2GHz, various SCSI drives, IDE hard drive, 1GB PC4000, AIW 9600 Pro, etc).
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