I'm building my first pc right now. I'm wondering between 2 cpu i5 2500k and i7 3770k. My main use of the pc is gaming. I read a lot of posts saying that 3770k is only a few fps higher. However, I assume, in those benchmarks, they only run the game but nothing else. What if I'm running the game while opening bunch of other heavy tasks? What would be better? Both CPUs are now on sale: $99 for 2500k and $230 for 3770k. But it's still a $130 difference. Some opinion please, I'm confused