vertygo,
Yep, you are right. Don't need to worry too much about video card power when running mame games. The Athlon 3200+ seems to have plenty of horsepower for everything at least up to KI 1&2, Neo Geo fighters, etc. Runs smoother than the 2.9 Ghz p4 I have in my upright cab. Haven't tried any windows games yet to see what the GF6100 can handle, but overall, very happy so far!