Mine is i5 2500K oc'd at 4.7 GHZ at 1.44V vCore since December 2011 and I am only using a cooler master hyper 212 plus CPU cooler and very stable in any kind of games. GPU is Asus HD 7770 direct CU. I For as long as you maintain a decent temp inside the chassis(5 120mm fans). Before I forget I am using a Biostar TZ68A+ MB, 16GB DDR3 1600 MHZ. They say with that vCore it will shorten the life span of the CPU, I don't believe them.