I am going more towards FX 8350 but still core i5 3750 is not out of my mind.With core i5 3570 or AMD FX 8350 will Readon HD 6850 survive for next 1 year or more.i will be playing most of the games on 720p and few on 1080p resolution.After how long do i need to change the GPU ?
Currently i am using core 2 duo E7400 and can play most of the games on high settings except a few like crisis 3 on medium with 420p resolution with my GPU.
Go with whichever processor you like & find attractive. Both i5 (Well, any sandy bridge or ivy bridge i5) & FX 8350 will play any game you throw at them. Also, your 6850 is fine for mid end gaming. At 720p, you can play most of the games just fine with that card. It's okayish.