Yeah, which is why i don't keep it at that. 850 is the most it goes being completely stable. Since this EVGA 470 is in my main rig, it is used for gaming too, so I need to pull my memory along with core. In my folding rig running the two ASUS 470s, I'll underclock my memory and push core as much as it goes once I get my new PSU. Currently, at stock it gives me about 13.5k PPD each. My aim is to get 15k.