What the HT at? Because whatever number it is at is what the frequency is times the fsb. If it's over 800mhz youll probably be unstable. Put it down to 2x as it has no hit on performance. It limited me to 2600mhz but when i put it down i got up to 2800mhz. Still the option to put +0.1 volt through it, so may try for 3GHZ