Dell recommends the customer review specifics about the update to determine if it applies to your system. The update contains changes that impact only certain configurations, or provides new features that may/may not apply to your environment.
This driver works for the following systems:
Web-post PhysX driver with .exe install.
Microsoft Windows Vista 32-bit
Microsoft Windows Vista 64-bit
Microsoft Windows XP
Here's other similar drivers that are different versions or releases for different operating systems: