
I can't even watch a video on it, you can even see the difference when moving the mouse (and I have a i7 quadcore processor -_-).

I have tried DisplayLink USB to DVI adapter but it's really choppy and unusable for me (photo and video editing). What I am trying to do is have dual external screen (Macbook Pro docked and closed). Or else is it possible to add another graphic card in (or outside) the Macbook so that I can use another display.

Is that possible to replace the existing graphic card of a Macbook Pro (Mid 2010, Mini DisplayPort, GPU: NVIDIA GeForce GT 330M) for a graphic card that could support 2 screen output?
