What are the VGA card models that support GPU optimization in MediaEspresso 6?

For supported NVIDIA VGA card models with CUDA enabled, please visit NVIDIA's website for more information: http://www.nvidia.com/object/cuda_learn_products.html
As for supported ATI VGA card models, please refer to ATI 4600/4800 series for more information: http://www.amd.com/us/products/desktop/graphics/Pages/desktop-graphics.aspx