Battlefield 3, crysis 3, far cry 3, and skyrim are some off the top of my head that like higher core count or at least utilize a quad core. But i doubt that ur cpu will be stressed to the limit with just one games, as most new games utilize a better graphics card over the processor performance, not saying to go ahead and run a dual core with a 680 lol Also i think it was mentioned before that games are not coded to fully efficiently use full 8 cores, as even if u get near 100% use, ud need other programs running in the background and possibly a complete different games, so a game itself will not stress all 8 cores but there are some that will utilize and run better off 4+ cores but not full 8