It will be mostly gaming, but I was never worried about bottle neck. During the games I have Chrome open with probably 4 or 5 tabs, YouTube being one of them, Spotify, and possibly Windows Explorer all while playing a game. Would any of these processors be able to do all of that without lag in between?
http://pcpartpicker.com/product/6tXfrH/intel-cpu-bx80648i75820k
http://pcpartpicker.com/product/tdmxFT/intel-cpu-bx80662i76700k
http://pcpartpicker.com/product/Td98TW/intel-cpu-bx80671i76800k
http://pcpartpicker.com/product/6tXfrH/intel-cpu-bx80648i75820k
http://pcpartpicker.com/product/tdmxFT/intel-cpu-bx80662i76700k
http://pcpartpicker.com/product/Td98TW/intel-cpu-bx80671i76800k