Thanks! Who wrote that? You say nvidia but the link is from the MSI forums...Regardless. That is there as Nd says.
That is a recommendation for the whole SYSTEM, sir, not for the card itself. The math has been done, and at stock speeds, it will be fine. I would feel more comfortable with 500-550W. But at all stock, it will be just fine seeing the quality of the unit and it being on a single rail.
Now is it cutting it close with a Mobo + SSD + HDD + 4 case fans? Yeah, that will be in the ~375W ballpark I would imagine. The fan on the PSU will be active. More is better, but it will be fine at stock speeds.
The key here is going to be if it has the 2 PCIe 6+2 pin, which I imagine it doesnt so you will have to use a Molex to 6+2 pin PCIe.
I rest my case, that list is BS, why would you need 38a and 600w when if you had a PSU that delivered it's rated specs 38a would equal 456w. See my edit above, MFR's always over rate specs to compensate for cheap asses and the uneducated who think buying a cheap 700w unit with 350w on the +12v rails will power their otherwise high end parts fine.
+1
EDIT: Here is total system wattage at the wall from Anandtech (Cliff's 463W):
http://www.anandtech.com/show/6973/nvidia-geforce-gtx-780-review/19
*Also note that system above is using an overclocked Hex core CPU (125W at stock stock versus 84W) and a PSU that, at that power range, is 88% efficient. So actual power use is ~407W. Take away that 40W+ (and I mean + since its overclocked, so likely 60W+) from the overclocked hex and hopefully you can see our point.
