"WOW. That is my first impression. The internal of this unit is just amazing. There are two PCBs in the box. Normally, only server class PSUs sport this kind of construction. The capacitors are big and fat. The wires used are thicker than most PSUs, indicating quality components. Unfortunately, I can not take the two PCBs apart, due to limited wire length. You can see Super Micro included an EMI filter in the inlet; this is to reduce the EMI emission."
FULL STORY @ OVERCLOCKERS (http://www.overclockers.co.nz/ocnz/misc/supermicro400wpsu/f1.shtml)