Dan´s Data has posted a review on the Enermax EG651P-VE power supply.
The EG651P´s 550 watt rating breaks down into 24 amps on the +12V rail, 46A on the +5V and 40A on the +3.3V. The -5, -12 and +5V standby rails are much lower rated, as usual - 1, 1 and 1.8 amps, respectively. That´s not a problem; the main power rails are the only ones that actually need a high current rating.Read more
Multiply out all of the amps and volts from the power rails and you get a clean 650 watts, which is the PSU´s peak output rating. It can´t actually handle having all of its power rails loaded to their full capacity all the time, though; the total aggregate load has to be below 550 watts, divided among the power rails however you like, up to their individual limits.
