Is Corsair HX 520W power supply sufficient

My current config starting to show these limits (x2 3800 @ 2.5Ghz + 2 GB of RAM + 8800GT 1GB) I wanted to renew, not necessarily change everything.

I currently have a power supply of Corsair HX 520W and I wanted to know if it would be sufficient for a configuration based i7 knowing that I want to overclock, and I will change the graphics card for a high quality end of years?

Here are the details of this future config:

i7 920
noctua se1366
6GB OCZ Platinum 12800
P6T Deluxe
Blue Caviar 640GB
8800GT 1GB
Corsair HX 520W

I count up, if possible, the 920 between 3.6 and 3.8 GHz ...

yes a 500 HE i7 @ 3.8 + 4850 GSE graphic card. It's with graphic card 4870/4850 it had problem

But the 620 would be more sustainable because of the kind GTX *** + your 8800 for PhysX

is sufficient

339w for use with a graphics card 4870 x2

So with your corsair 520w power supply and graphics card 8800 gts will be good

Personal experience: it gives me 100% usage on my program management of the UPS with my config 1, burn-in on the 4 + 4 cores graphic card (probably not 100% graphic card): 450W

I have a 650W power supply, it seems more "at ease" than a 520w I think.