Soldato
I think you are better off upgrading your CPU etc first, and get that over clocked to a stable state, then look at GPU's afterwards.
+1, the cpu will probably be in your system longer than any gpu.
If your stuck for cash after getting the best cpu you can afford, get the 7850, if your lucky, it will push out close on stock 7950 performance.
Outwith BF3, I very much doubt you'll notice much difference@1080p in gaming.
On the subject of overclocking, I very much doubt the TF is going to clock 50MHz more than any other 7950, it all falls down on how oc'able each chip is, not what AIB's do with the board, the Lightnings are evidence enough of that.

