yuvalpapo :
dewjustin :
I7 ideally if your cpu is pegged at 100% in certain games, which it sounds like it probably is with the fps drops. 6700k/7700k sounds like a good bet for the best improvement your case.
I've noticed a lot of threads saying that a lot of modern games don't use the hyper threading that i7's offer. Is that correct?
It used to be the case but in high fps (>100 fps) quite a few modern games are starting to benefit from an i7. At 60Hz/FPS there is nothing material between an i5 and its equivalent i7. What helps more is an overclocked i5 or i7 but I am surprised your 6500 dipping under 60 fps. You really need to check.
However, when a 6500 is using all 4 cores I think it only boosts to 3.4Ghz. The 6600k can usually easily be OC'd to 4.4Ghz, so that's an extra 29% all games can use. Only some games can benefit from an i7 in high fps setups