I have a 3570k and planning on a Sapphire 7970 vapor x ghz edition.. Will my setup(plus pc lightning and a few other things) run well with room to overclock on a xfx 550 w psu or will I have to dish out more money for a new psu???????
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Sell your xfx 550 or keep it as a spare and buy a 650. They are cheap anyways...
It will more then likely be fine on the 550w psu but going forward like login said a 650+ psu would be preferred.
As long as your not overclocking cpu and gpu plus adding seven or eight high voltage fans you are fine.