In the Rocket Sled demo youtube video, they simulated 500 000 particles for the bridge, at about 5fps. The presenter says you can do millions.

My observations:
1. Fermi is running well. If you can run something that complex, no reason you can't launch.

2. 500 000 particles is almost as high as screen pixel count (2MP for 1080). That's huge!! In Particle Fluid Simulation GTX285 (CUDA) does 30fps with 60 000 particles. 2fps on Core i7.

3. Repeated mention of "CUDA" and "PhysX" instead of DX11. I guess nVidia will continue promoting proprietary path. So, future TWIMTBP games like Batman Arkham Asylum2 will continue to require nVidia card for all the features. AMD users get shafted?

4. Rumours, photos and tapeout of Clarkdale almost 12 months before launch. nVidia DX11 midrange/lowend... canceled?