I think such kind of devices are primarily portable and occasionally mobile. It is a subtle but important difference. Most gaming PC notebooks over 13" are to

I think such kind of devices are primarily portable and occasionally mobile. It is a subtle but important difference. Most gaming PC notebooks over 13" are too bulky anyway to be considered mobile devices. The only beefier notebook that still reasonably can be used as a mobile device even at 16" screen sizes are, in my experience, macbooks pro. but YMMV