The DirectX/Microsoft ethos is that of 'why try to draw to the screen faster than the monitor can refresh?' so I'm sure it's possible to do so, but it will not likely be set to do so by default.

You might even have to have your end users go into their adapter settings and disable forced vsync on the OS level. It's the same as if you were using OpenGL as a matter of fact. So really you'll have to account for the user being able to know the difference or having either option set on their side.