I'm not sure, I just saw it on the settings on the Demo.
I was thinking of Arma, but apparently it doesn't like AMD cpus and I know I can run Doom. Picked up JC2 as well, multiplayer is really fun, much better than GTAVs one anyway imo.
I never ever enjoy GTA, but the first person addition makes me really want to get it. I know I'll hate it!!!