Up to 975MHZ CORE CLOCK and Clock Generator Reports 975 as well... Broke 950... I doubt there's much headroom past this speed and it's not a matter of if it can or can't do it... It's the voltage regulators voltage droop a lot... From 1.213v input, the output is 1.166v or so... That may be resolved with using even higher conductive material for the voltage regulators though that droop is occuring also by the temperature of the capacitors on the pcb. They should be engineered in a low profile form so the heatsink assembly can contact them all and use high end material to keep them cool reducing droop. See the droop occurs when the temp of the capacitors rises therefore creating higher resistance... Keep the capacitors cool well below their threshold to maintain low resistance and high input/output voltage ratio...