The problem with Intel-NVIDIA-Optimus on laptop is that, the Windows (or the system) will always and only report the primary graphics card which will always be Intel HD Graphics. Because of the Optimus technology, the integration is seamless to the application and the system (NVIDIA Control Panel) will decide which GPU is best used. You can overwrite this through the control panel, or set its global settings.

Took me a while to gather the understanding of Optimus, it is both a nice yet nasty thing. The same issue happens when one looking at WEI and it will only report Intel HD Graphics.