Normal
To put this in perspective: If you could overclock a Titan X from its 1531MHz Boost clock (I assume the 11TFlop figure is at boost rather than base) by 30% to the ~2GHz some GTX 1080s have been achieving with additional cooling, you've just added 3.3TFlop, or stuffing nearly an extra GTX 970 (3.5TFlop) into there!