I'm not too much into PC games but last month I saw DOOM3 at Sam's for $9.00 so I got it. (I've played the other DOOM games to death)

My only desktop is a 600Mhz Celeron 128MB win98 machine so I didn't even try it there.

My fastest machine is a 2.7GHZ 1MB Toshiba notebook which I've been playing on, but sadly I have to play with the lowest graphics setting.
(Even then it's not completely smooth)
I could turn off part of the graphics (Bump and Specular maps) but don't want to do that.

Oh! How I'd love to play that with a kick butt graphics card!

Efficient drivers do it better.
1003 miles a tank personal record. 74MPG calculated. HCH1 CVT