System spec:
CPU: AMD 2000xp
Vid Card: GF4 Ti4200
Mem: 2 gigs
OS: WinXP
Yes it gets choppy (specially when there's a lot of people in the server) but I'd rather have some eyecandy and sacrifice some framerate. I just don't display the framerate counter on the screen so I don't get reminded on how crappy my system is :D .
I just adapt and have fun!