GeForce GTS 450 on Win 7 64, in AMD Athlon 64 X2 Dual Core Proc. 5600+ at 2.81 GHz

Of all the drivers that NVIDIA has released since this board came out, Which versions thereof would work the best for my setup in Blender. Does anybody Know, whom would care to tell me.?
here is it’s Driver Key as it sits. It takes a hella long time to switch from one 3d mode to next. as wireframe to solid to texture etc.