It will bottleneck but not much.
It will be a good system, its not like you are going to get horrible FPS. You may have ~10-15% less performance than the card offers at stock speeds. At 4GHz the 965 and 960 can handle a 760 without a bottleneck, so you will be fairly close to removing the bottleneck. In CPU intensive games it will be more apparent, but again, it wont be bad.
(Source, Owning a 965@4.22 and a 760)