Which PSU for my pc?

[naan]

I need help choosing a psu for my new build. There are 3 psus to choose from so can anyone suggest me which one to get?

1) Cooler Master GX-series 650W PSU (80PLUS BRONZE) (its the new version)
2) OCZ 600W MOD/XSTREAM PRO
3) FSP Aurum Gold 500W (90 plus gold)

My rig:

i5-3570k oc to 4.5
hd 7850 or 7870 dont know yet
8 gb ram 1600 mhz
1 tb caviar black
msi z77a-g45

i need fast response plz ty!

 

[Silvune]

Probably the FSP Aurum 500 as it is the most efficient and matches or beats the competitors you've listed in electrical performance. And it actually has a decent idle fan speed, unlike the 600W+ versions.

My second choice would be the OCZ ModXStream Pro 600W.

 

[C12Friedman]

I'd go for the OCZ model personally

 

[Rugger]

+1 to Silvune. If they are all about the sam price, then FSP Aurum and then the OCZ...I personally wouldn't buy a Coolermaster PSU.

Edit: corrected format