Not only Nvidia Optimus but also AMD Switchable Graphics . Well , i don't have AMD laptop , i'm not so sure
http://forum.notebookreview.com/acer/633607-cant-disable-integrated-gpu-bios-help.html
http://forum.notebookreview.com/acer/633607-cant-disable-integrated-gpu-bios-help.html
Laptop: (Show Spoiler)
Mini PC :: (Show Spoiler)
