My
island-cocktail build uses a low power Dell Optiplex GX260 (P4 2.4, 512MB RAM, 40Gb) with a PNY nVidia 6200 256MB AGP card.
Works perfectly for MAME.
Not so good for Future Pinball. I can play it at low res and with a minimal set of options turned on, but it's less than ideal.
(A new PC is not in the cards right now, so to speak, so forget about that

)
I am wondering if I would see an improvement in playability if I bumped the video card up to a "PNY GEFORCE 7600GS DDR2 512MB APG Video Card"? These can be had used for not a lot of cash, compared to some of their later model brethren.
Thoughts?