I know your pain!! I personally like older generation machines to run MAME, versus the hotrodded newer stuff..it just seems to run smoother to begin with. I use a stripped down P4 with just a 128 card, and all is well..if I try to use it on a 3000 +, with my 512, all hell seems to break loose....MAME is a simple beast, so I keep it going on a simple machine..more bells and whistles are not always a good thing, IMHO.