Will this PSU be enough?

[Akagi]

Sorry to ask this kind of question yet again.

Will an OCZ ZS 550W be sufficient to power:

i7 930 (overclocked, under 1.4v though)
2 sticks of DDR3 (1.5v)
Rampage 2 Extreme
GTX570
1x HDD
Kuhler 620 push/pull
3x 140MM case fans.

Psu calc sites say 508W recommended for 90% loading, 85% CPU TDP, but 100% + 100% gives 580W recommended.

 

[RJC]

You will be ok, looking at a Bitech review they used a i7-965 CPU to check the performance of the 570, whilst in gaming they got 330w from the wall.

http://www.bit-tech.net/hardware/2010/12/07/nvidia-geforce-gtx-570-1-3gb-review/9