I bet a 128MB 6600GT would work (only just).. Geforce FX and below I would highly doubt it.
Reminds me when I tried to run Sh3 on my brothers 64mb Geforce 3 Ti200 - back in the day, the game actually loaded up a save and I got as far as the command room. But as soon as I went to exterior view, it fell over (CTD).
