You might notice, that this very update you link is more then a year old - which wouldn't be a big problem, as their are no known bugs.
But problems arrise, when a new game installs (or even requieres/asks for?) a newer PhysX version. Afaik, it is not possible, to use the old 8.something PPU-PhysX-client and a current software-PhysX client on the same system. Everytime, anything installs the later one, the first one gets overwritten, so it becomes a pain in the ass, to keep an Agaiea PhysX running, thanks to cancelled support by Nvidia.
Again, it seems you have very limited interaction with PhysX drivers. This driver co-exists with Nvidia's GPU PhysX driver. It is not the same runtime, both drivers co-exist and one will not overwrite the other. This driver used to be bundled with the GPU driver but was decoupled simply because the PPU driver no longer needed to be updated on a monthly basis and most people simply did not need to download it every month or two.
Any game with hardware PhysX to-date supports the driver and the PPU, if at some point it needs updating, I'm sure Nvidia will do so. Considering this site did a review using the Ageia PPU as recently as May proves this is the case.www.pcgameshardware.com/a...
first: Windows 7 is said to allow multiple graphic drivers, as is Windows XP.
secondly: PhysX is actively deactivated in the Nvidia driver, when an AMD-graphic card is deactivated. This means the deactivation is done by Nvidia and on pupose, Windows could at best shut down the whole driver.
third: It is definetly not my problem, if a "General Processing" or "physics-accelearting" card does not work in my system, because windows has a restriction for graphic drivers. It is the very duty of the comany selling the above to insure, that these functions can be used. If the company cheapskates the development of a driver for this project and instead recycles a graphic drivers. That's not-providing the software requiered to use the card for it's purpose.
Again, I'm not sure what to tell you. Your GPGPU is STILL a GPU to Windows, and as such, it needs graphics drivers in order to access its resources. GPU drivers are limited to WDDM restrictions, so if you wanted to attempt this unsupported configuration it would be your problem, or anyone elses who wanted to try this unsupported solution.
Their solution works as described with their hardware configurations. Surely you're not suggesting a company is compelled or required to service and support another company's hardware, especially when that company has shown no interest whatsoever in reciprocating that support?