Now this is pretty interesting.
Admittedly, I have not searched for any reviews (if there are any to be found) about this.
I also have been bombarded with the nVidia PR claiming that it could be used as a stand alone PPU.
I will have to google this when I get home from work and see if there are any reviews one way or the other.
I guess this could lay to rest my indecision about stuffing my old GTS 640 in with my 4850's for physiX support