New hardware dedicated to physics computations to bring new level of realism to games.
Your games are about to get a lot more interactive. Fabless semiconductor company Ageia has today announced PhysX, the world's first physics processing unit. The PhysX chip is a dedicated physics processing engine designed to coexist with the CPU and the GPU in existing desktop systems.

http://www.gamespot.com/news/2005/03/08/news_6119895.html

That will be good to have later on, but as for now, I don't need it.

http://www.gamespot.com/news/2005/03/08/news_6119895.html
That's brilliant! Instead of just using multiple CPUs, let's release a new card to do the same job! It's less efficient, and will probably cost more in the long run.


Edit: 6 months later; since this thread was made, more developments have been made with the AGEIA PhysX card, making it look like a decent solution.