What card are you considering? The CPU will bottleneck newer cards like the GTX 760, from what I've seen.
I'd recommend overclocking the CPU (they OC like champs with a decent cooler) to around 3.5GHz or so. That should eliminate any chance of a bottleneck.
I would like to play games like Tomb raider, battlefield 4, assassins creed on max settings..
my budget is around 300 - 350 $.
I am considering gtx 760 and amd 7950