I am running G2 on a Compaq 5000 series. It's about 18 months old, 667 Mghz with 64 Meg of ram and "up to 14 Meg of video Ram" As i understand that, it uses what it needs.

I have been fairly happy with it. I do limit the # of items (trees. etc) that I have visible at the airport, so I get a smooth frame rate as I just have the standard video card. But I have no problems with the sound.

Tim