Today, Nvidia has presented
new 256 Family
of GeForce/ION drivers. Among from other features, like improved performance for GTX 400 Series GPUs, Blu-Ray 3D, CUDA 3.1 and OpenGL 4.0 support, new drivers are introducing enhanced configuration panel
for Multi-GPU and PhysX configurations, with more intuitive interface.
In addition, it's now posible to specify which GPU use for each CUDA (and PhysX) application via Manage 3D settings
You can download beta version of 257.15 Drivers here
. PhysX System software 9.10.0222