Free Download PhysX 9.10.0513 (By NVIDIA) for "ATI & NVIDIA" GPU

How it works:
PhysX is designed specifically for hardware acceleration by powerful processors with hundreds of processing cores. Because of this design choice, NVIDIA GeForce GPUs provide a dramatic increase in physics processing power, and take gaming to a new level delivering rich, immersive physical gaming environments with features such as:

Explosions that create dust and collateral debris
Characters with complex, jointed geometries, for more life-like motion and interaction
Spectacular new weapons with incredible effects
Cloth that drapes and tears naturally
Dense smoke & fog that billow around objects in motion

For Windows OS (XP,VISTA,7,8)
 Link (32.5 mb)