Minimum PSU I can get away with.

[revrondo]

I have the following system and have to send my PSU off for RMA, so I'm not without a pc I have decided to buy another PSU and use that while mine is being replaced.
Once my RMA is back I am then going to upgrade and give most of the below parts to a build for my 10yr old to play FPS against me online etc. Now i'd rather keep the Coolermaster (assuming they give me a decent replacement) for my new upgraded system so what is the min I could get away with for the majority of the below system in terms of PSU power.

Intel Core i7 920 2.66Ghz
Gigabyte EX58-UD5 Intel X58
XFX Radeon 5870
OCZ Gold 6GB DDR3 1333MHz
Western Digital VelociRaptor 300GB
Samung 1TB storage drive.
LG GW-H20L BluRay-RW
Nec 24WMGX3 LCD
Silverstone Fortress
Coolermaster Real Power M1000w PSU

 

[revrondo]

thx guys, so can anyone comment on OCZ warranty (just in case).

 

[revrondo]

I still aint no wiser on which one tbh but I have always known the +12 rail is really important. Does it matter if its single, twin or quad rail and whats the min on the +12 rail i would need anyway.

It seems distant to warranty office is a selling factor here, especially if it breaks.