Its on consoles, on PC there is no cap unless they have same DOOM'ish/Prey'ish 60Hz cap.
Quake Con keynote
7:25: "By the the time that DOOM 4 ships to consoles, PC will be light years ahead of current consoles. In this case, the PC version will support significant visual improvements over 360 or PS3 versions. Rage, on the other hand, will more or less look the same across all platforms it's available on."