In the PhysX manual, there is an example on how to do it(check for GPU support, enable GPU and check if GPU is REALLY enabled or just a fallback to cpu).
I think even a blindwrite is possible with this^^
Otherwhise: i have a NVidiaCard*hint hint*
MY Website with news of my projects:
(for example my current
Muliplayer Bomberman,
GenesisPrecompiler for LiteC
and TileMaster, an easy to use Tile editor)
Sparetime-Development