Last time I looked at software rendering must've been Quake 2. It looked really gritty and detailed, but ran super-chopola. Might try it again and see what a really high res looks like.
I can definitely see Daniel's point about average Joes buying really meaty machines with ropey onboard graphics. Its an example of pulling the wool over the eyes of the buyer imo. '...but its got a 120 gig hard drive, sir...'
For the victims of this, its good to see there is support from game developers. Jolly good show!