go for the 750i for two way sli or 780i which have both proven to hit over 4ghz with ease the little extra to 4.2-4.5 wont get you any better gameing performance! or you could go Crossfire i would recommend the evga 780i or 750i with two gtx 260's in sli and then overclock the lot can play crysis @ 1920x1080 on max settings at stock and even better overclocked. which means this will play pretty much every game for the next few years. well i hope. good look finding what you want. hope this has helped