Yes it does!!! But in only one game!!!
Crysis 3!!! I just got an i7 3770k switching from a i5 2310, My performance in FPS went up a lot, from 24 Frames a min. to an average of 40-60!!! and its because, the game uses the processors extra cores,for the physics effects which you see a lot in the game!
PD. Running a GTX 670 and i7 3770k (stock) @ 1080p Highest settings 2x Smaa