Cooler Master eXtreme 600W PSU
 

Today we have the pleasure of looking at one of their top-of-the-line models the eXtreme Power 600W; this supply is ATX 12V V2.01 compatible and should be adequate for those looking for a power supply offering a bit more power than normal.

More Watts than their RealPower 550, yet not SLI certified?

And RealPower 550 has slightly higher 12V2 amp. I believe the cheapo over rated PSUs of the past will all be varnished when current CPU, motherboard and graphic card demand for cleaner voltage and higher quality PSU.