Thermaltake TR-500P

So you want to go down to a 500w from a 600w psu? Is there a reason to go down and not stay the same or even go up?

SeaSonic M12II 620 Bronze 620W ATX12V V2.3 / EPS 12V V2.91 SLI Ready 80 PLUS BRONZE Certified Modular Active PFC Power Supply
$89.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

SeaSonic M12II 520 Bronze 520W ATX12V v2.3 / EPS 12V v2.91 SLI Ready 80 PLUS BRONZE Certified Modular Active PFC Power Supply
$59.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

These two would be much better choices and if they are too pricey then ;

CORSAIR Builder Series CX600 V2 600W ATX12V v2.3 80 PLUS Certified Active PFC Power Supply
$69.99 and a $20 rebate makes the final price $49.99.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

This Corsair is 80 plus certified and for only $50 for a 600w psu this is a good deal.

The 700W version was positively reviewed at hardwaresecrets, so I think it's probably an ok option.
http://www.hardwaresecrets.com/article/1422

Where are you? (Country or website you are buying from is the information I'm after) And what is your budget?

What PSU do you currently have?

Im from Peru, and the prices from newegg for example are not the same here, like 20 or 30 dollars of difference or more.. Also my PSU is NOT a certified one, it says 600w, but who knows how many watts is it really giving? Thats why i want to upgrade that and perhaps another video card.