Yes, all series 8, series 9, and GT200 series cards can support gpu-based PhysX. HOWEVER, these drivers / PhysX package only support the GT200 series cards and the G92 series cards (aka 9800GTX, 8800GT, 8800GS, 8800GTS 512mb, etc). These are just preliminary beta drivers. I am sure that in a month when nvidia releases official PhysX drivers / packages (I am guessing 1 month), that they will fully support all 8, 9, and GT200 cards. But for now the drivers only support GT200 and G92.