This Video tutorial for Maya is explained one pretty interesting trick for obtain the realtime render in the maya viewport with the viewport 2.0. A fast way for create animations when you don’t have several hours for render all the frame one by one in mental ray or vray.
It include the full use of:
Realtime Motion Blur
Realtime Ambient Occlusion
The VGA that I have is an ATI Radeon HD 5870, but it work with nvidia too.