The power supply came with a case that a friend of mine bought. I have used it for less than a month. It is a Turbolinx model LC-A420ATX so i assume that means 420 watts. It has 28 amps on the +12v rail. In speedfan it is showing anywhere from 13-13.2v. I unplugged one HD and the big case fan and the voltage stayed the same. For some reason it shows 2 +5v with one at 4.8v and the second at 6.85v.
SYSTEM SPECS
3 Hard Drives
1 Dvd-r
1 120mm case fan
1 80mm case fan
1 radeon 9000pro graphics card in a 4x agp slot
Athlon xp 2400+
512mb kingston ddr 2700 ram
crappy old emachines motherboard with a via chipset
Test the power supply with one multimeter. In one molex (hard drive conector) you can found ground, 5v and 12v if 12v is more than 12.3 you can damage harddrive, graphics card, etc.