I have had this unit for a month now, but have done little gaming. When I played a game the other day the game ran great but the frame rates seemed low. I set them to max fps and still got about 60-70.
I thought that if it didn't need the extra power it for video it might not kick it in, so I look to make it run the 660m. I opened the Nvidia control panel and selected the Manage 3D Setting at which point I selected the executable and under Multi-Display/mixed GPU setting I selected "single display performance mode". Then my game went as high a 600 fps.
So, is there any easier way to know whether the 660m is running other than using that setting?