3D Vision? Do you have a special 120hertz LCD and glasses that cost $2000+?
3D Vision is an expensive and immature technology. There's no point in getting it unless you have $$$ to blow...
Well its not 2K you could get this Monitor and glasses http://www.nvidia.com/object/product_GeForce_3D_VisionBundle_us.html
and pair it with a GTX 470 that's 350
So the setup would be about 950 with a GPU. glasses and monitor