If you are thinking of updating your CPU, read this

[Spies]

http://www.tomshardware.com/reviews/gaming-cpu-overclocking,3077-5.html

 

 

One thing that they say at the end, just before the Game Hierarchy Chart.

 

I don’t recommend upgrading your CPU unless the potential replacement is at least three tiers higher. Otherwise, the upgrade is somewhat parallel and you may not notice a worthwhile difference in game performance.