ok im looking at these solutions and laughing.
the i5 you have is great. you have no need to upgrade what so ever.
better cpu will not enable you to render more stuff, rather do large files faster. long story short unless you are a professional in the video editing industry the i5 is plenty. don't waste your money.
if you game with the i5 you will NOT see any performance increase when you get an i7. spend the money on a better gpu. or better yet don't spend it. you have a 4th gen cpu. its the current gen. upgrading is just blowing money out the window at this point