See here...
http://techreport.com/discussions.x/14147

Ah sweet, that means I've already got a physx capable card! xP

Shall be interesting to see the performance of this.

I wonder how a low-end part would fare? I also wonder where the 9-series comes in to play?

What do you mean by low end? The 8600s and lower? I doubt they'd be much good, considering they're pushing it for graphics in a lot of cases too.

It will be interesting to see if this dynamically spreads load, especially on SLi sysetms.

Yes! That would be very interesting! I wonder if it would extend to 3-way SLI setups also!

And by low end, I meant everything under 8800GT to be honest. So yes, 8600, 8500 and 8400. Also, I wonder if the integrated 8-series chips will run it too?

It say in that article about it extending to 3 way setups, but says having "1 physics and 2 graphics", which worries me about the flexibility.

And your categorisation makes me low end! My GTS is worse than the GT