First of all I'm building a gaming computer that is going to have an HD 6850. I'm going to be playing games like SC2, WoW, CoD, etc. I want to know if getting an i5 2500k rather than an i5 2500 is going to improve the grapchics by a considerable ammount. In my opinion, going for the i5 2500k isn't really worth it because i'm going to have to buy a new heatsink to overclock and it just seems like in the end my gaming experience will be the same. What do you suggest? What is your opinion?