Nice.

That PSU is around 76-78% efficirent at those Watts. It won't be more at all.

So your DC draw is less.

Volts? Each chip has a limit on NB/H ref. Only unlocked multi's can alleviate that but I reckon they will be in very short suppy/high demand/high prices.

This is stock volts on everything just done a few minutes back from bootup: http://valid.x86-secret.com/show_oc.php?id=278356