http://www.svc.com/ac55dufanp4r.html

This is a 550W ATX power supply that is pretty cheap. I was going to go with the 520W TT-520SS ATX power supply at $69.99 but the 550W ATX power supply actually has rails that provide more amperage than the more expensive model.

DC Output: 3.3V @ 28.0A, 5V @ 50A, 12V @ 20A on the $69.99 model
DC Output: 3.3V @ 30.0A, 5V @ 50A, 12V @ 25A on the $32.99 model

I tried searching for a review of the Achieve 550W power supply, but I can't find any. I read a TT-520SS by a good reviewer and it seemed like a nice power supply.

Basically what I'm wondering is how can the Achieve 550W power supply be so high quality and be so cheap? I don't want to buy something to have it underperform or crap out on me easily. If it's good quality then I'll grab it up right away.