just my two cents: I think people forget reason we really choose the high wattage power supply, it is for the high current output ability, for example, I have a corsair 520 watt supply, and my pc only need 250 watt on 3d mark 6 test( cpu and video card on full load), but same test will crashed the pc if I put another video card for sli set up. on the parer, add an extral video card only needs 350 watt stops, but what really caused crash? I believe it has something to do with two video cards needs more current than my power supply can handle.
power supply marking is really mislead on the customer level, people should pay attention on the 12 volts current output ability.
the difference on the seasonic test report may has something to do with load set up, if most load is on 12 volt line will bring high number,
