No overclock there, its a "Non K" version. For my purposes I didnt need the K version, this was plenty as it is. Stressing it on AIDA64 for around 40min brings temps up to 85°c with all cores running at 4,49GHz. This is a gaming rig after all, so yeah, its plenty as it is. Very happy how its turned out, but I still want to get a dual channel memory kit.