Hmm, never tried to....but come to think of it, I believe it was greyed out at DX9
It's all set to high settings and the 'Render Mode' over to the right where you could change it to cell shading and whatnot, or 'cold' says NOT SUPPORTED! when I try to change it.
I just formatted like a month ago lol, but I'm thinking I'm gonna wind up doing it again. My computer is acting up with tons of driver installs, uninstalls, reinstalls, games uninstalled, reinstalled blah blah blah, so yeah. I screw around with this thing so freakin much I'm formatting damn near once a month