Mushkin HP-550 (550W) Power Supply
 

I think I said it best when I was laying down why the performance score was only a 6. Outside of actually putting out 550W, efficiency could be better, there's no power factor correction, and the performance decreased significantly when temperatures were increased. Ripple was high and crossloading potential is evident.

The power supply looks nice, the cables are nice and they're modular, but you can't bank everything on a power supply looking uber-smooth. This product has the Mushkin name on it, so people are going to have high expectations. I know I did.