Need help with buying power supply

[McRooster]

Hey everyone I plan to build a PC in which I will be using a i5 3570k, asrock z77 extreme 4 motherboard and a xfx 6950 (2gb) graphics card.

So far I have been looking at the: 620W Antec High Current Gamer

 

[bigcyco1]

That a good choice

 

[alexoiu]

HI, AMD says 500 Watt or greater power supply with two 75W 6-pin PCI Express® power connectors recommended.
If no Crossfire intended for the future, then yes, it will work.

 

[prototype18]

What's your budget ?

 

[suddenstop]

One thing I have learned in lots of builds - a good power supply is worth every cent. Cheesy power supplies can cause all sorts of instability, and rock solid systems have good power supply.

Secondly, power supplies last a long time and in my case move from system to system. So i spend the money on that component.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139010

I would be looking at something like that.