Help with graphics card plz

[Pudlica]

(Sorry about bad english) I know a lot about pc and components but its good to see others opinion and in am in doubt between thus cards, unfortunately i can't get any other graphics card except worse also if you think i should buy better processor and worse graphics card or better graphics and worse processor, i'm going to use it for gaming, please dont tell me any other graphich card because i can't get it only one of those three.
I'm going to have theese processor and power supply...

Amd Fx 8320
Thermaltake 530w
8gb ram

Now... Wich one of theese video cards:
Nvidia gtx 660
Ati HD 7870
Ati r9 270x

Thanks for any response and anyones opinon will be helpful

 

[PP Mguire]

The 270x.

 

[Kusheire]

After looking at all three cards, they all have about the same potential to run the games you want. I agree that the 270x appears to be slightly better than the others, however bang for buck, unless you're going to get into intense gaming and run multiple applications at the same time, you can easily get away with the GTX 660.

 

[PP Mguire]

The 270x far outstands all 3 cards. It's 7950 performance level for basically 7870 money depending on the market.