No it won't. But you can also wait for the 8000 series, rumor is they're coming out this sept to oct. If I were in your place, I'd wait for the 8000 series since it's very close. And rumor has it that NVIDIA won't release any more card this year. It will also come with lots of free games.
I think a 8150 WILL bottleneck a titan unless it is heavily OCed.
AMDs offerings aren't as good as intel right now, and the bulldozer had disproportionally poor single thread performance.
But i am planning to OC as much as it can run stable with a watercooling system; Still not enough budget for the price/quality that intel offers, trying to get a good rig spending as less as i can. Maybe i could upgrade to a 9370 if i wait a couple of months.