Hypothetical situation.
A person with two GTX260s and an 8400 GS.
Is it better to do SLi with the GTX260 and let the 8400GS handle physX, or is it better (or even possible) to let the two GTX260s do both SLi and do PhysX?
A person with two GTX260s and an 8400 GS.
Is it better to do SLi with the GTX260 and let the 8400GS handle physX, or is it better (or even possible) to let the two GTX260s do both SLi and do PhysX?