the processor doen't make a big change in gaming
I recommend to buy the Intel i5 3570k since you can play games like Battlefield 4 on ULTRA
this video is an example https://www.youtube.com/watch?v=xX7IEPBvD-8
The i7 compared to the i5 wouldnt make a huge diffrence but it will
and i would get the
i5-4690k
i7-4790k
both are very good but the i5 will save you money about 70-100 $ depending on where you buy it and both work great with gtx 760