Cheapest Card for stand alone physX

[PCVSnotebook]

Hi,

I was thinking of adding a dedicated card for nvidia PhysX ...

so which one will be enough ?

GT 630 ? GT 650?

I dont think just for PhysX one would need a GTX card right ?

I never used a dedicated PhysX card ... and I want to lift the load off my card for cheap.

 

[Dark Shroud]

A GTX 650 should be enough.