Ahh I see, so all in all my processor is pretty good for the 960, but if I wanted something like a Titan X, or if I just wanted more power I could upgrade it.
I don't know much about the way individual processors or graphics cards compare to each other, but you would be better off getting whatever is the best thing you can afford now, that would make the biggest improvement. a bottleneck isn't as big a deal as people make it out to be. upgrade one now, you can always upgrade the other later, and you'll wind up seeing an obvious improvement. however if you just buy a small upgrade for BOTH, now, you'll be disappointed...
what I would really suggest doing, though, is waiting until you can afford to make a substantial upgrade to both at the same time. plus, it'll be in the future (durr), so whatever's released by then will be better than anything you could get now, either way you did it