No way of telling till you try, all 4670Ks are different/individual, many will OC better than the norm, others won't....the H60 isn't that good, wood be better with the less costly Hyper 212 EVO, but, give it a try and see, might simply set the CPU voltage to 1.25 and try straight to 4.0 and see if stable, if so , take it up a bit at a time