i see... that's odd. on other thoughts, couldn't it be wattage related? i've been seeing some screens of people who's 980x throttle at even lower speeds (4.250GHz+) -but with greater vcore, due too weaker batchs-...

so, and i'm taking a huge guess here, maybe the board has its own power limit for cpu power, and the 980x is too power hungry for the P6T series....

remind you: there's no concrete proof of this; this is just me trying a long shot.

really hope im wrong though...