This is good to know. I'd be interested to see a comparison in performance of the same (recent) game on the same hardware with Windows vs. Linux vs. FreeBSD; I

This is good to know. I'd be interested to see a comparison in performance of the same (recent) game on the same hardware with Windows vs. Linux vs. FreeBSD; I assume there will be a small penalty from Windows to Linux (in general) and a larger one from Windows to FreeBSD, just because the games are not optimized for the best way to do things on the other platforms. Syscall emulation gets you comparable functionality but not necessarily comparable performance, given there's mismatch between the underlying abstractions. On the driver front, even if it's just nVidia that's holding things back [edit: apparently they're not], that's still going to affect most PC gamers.