PPUs are Physics processing Units. curently physics simulations such as bodies being thrown aqround or bricks falling down are handled by your CPU and the top CPU can handle about 40 at once. The first PPU to be released by Ageia will be able to handle 30,000 to 40,000. this means totally new types of gameplay elements. imagine bricks instead of being textures are actual bricks where you can shoot an opening through a wall and see to the other side. or pile rocks onto dynamite and when monsters come around. boom. rocks flying everywhere killing all of the badies. or chunks of armour falling off as you get shot.
possibilities are limitless.
http://www.ageia.com/technology.html----------------------------------------
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