PSU required for overclocking and SLI

[shikhae]

This has probably been asked before, but the search didn't turn up any results.
Would the corsair 520w be sufficient in overclocking an e6420 to 3.2GHz with graphics cards (excluding the 8800's and the GTX/X2's) in SLI or would I need the 620w?

 

[myocardia]

You'd need more power than that. Plus, if you're planning on having two 8800GTX's, you'll have to have a psu with four PCI-E cords/plugs, since they require two each.

 

[shikhae]

Well I orignally said excluding the 8800 series because of their much larger power consumption. I was thinking more like the geforce 7 series (again excluding the top tier dual gpu models).

Or did you mean that regardless of the SLI configuration, both the 520 and the 620 are insufficient for a 3.2GHz overclock of the e6420?

 

[myocardia]

Sorry, I missed the excluding part of that post. Yeah, the 520 watt Corsair would run SLI'd 7600 GT's, or even 7900 GT's with no problems, along with a 3.2 Ghz E6400/E6420.

edit: That's assuming that you aren't planning on having 6 Raptor HD's, and 15 LED 120mm fans, along with...

 

[shikhae]

Thanks for those speedy responses. I think you just saved me some money.