i'm almost positive that it can be. unless they changed the measurements of the 4 holes (i doubt it). because it's the same push through and clip-in apparatus. i was wondering myself if the 2600 non-k comes with a better hsf than the 2600k, because the 2600k hsf is a tiny piece of nothing tin. since they know people buying the k's are oc'ing, they may be putting the junk hsf in there and half decent ones for the non-k, if someone can confirm that. my only point being, the 2600k hsf is junk.