The driver known as NVIDIA PhysX actually adds support for Nvidia GPU hardware. This software package is actually a utility toolkit that was created to add support for PhysX on Nvidia GPU hardware. The great thing about this update is that it actually allows you to use this very package on the latest drivers for the Nvidia graphics card of your choice. This is a freeware program that was designed to be installed on computers that are running the Microsoft Windows operating system. All the files that you need to update your Nvidia GPU should be contained in the small download.