Is this PSU capable for this i7 build

http://www.scan.co.uk/Product.aspx?WebProductId=664337&source=corsairpsu

550w Corsair VX Series PSU

for

i7 920 2.66ghz
896MB XFX GTX 260 XT
3x1 gb ram
1 hardrive
1 cd/dvd
2 x120mm fans
4 usb devices plugged in
cpu cooler
Sound Blaster X-Fi XtremeMusic

nothing overclocked

I would get the 600watt just to be safe, ur USB devices may suck a lot of power.

Really you might want to consider a 750w if you ever want to be able to get a new high end video card one day.Kurushio

I don`t plan too

And the usb devices is a modem/keyboard/mouse and some times a usb memory stick

http://www.corsair.com/psufinder/default.aspx

seems to say its ok tho

I would say that you are fine, except I cant seem to find how many amps it puts out on its single rail. That is the only thing I think holding it back, the fact that it only has 1 rail. If you where to need a reason to not get it that is not, I recommend finding a PSU around the same wattage with at least 2 rails.

That PSU will work fine for you. Cheers