Just thought I'd mention. The game in the "gaming" picture looks like The Last of Us - a PS3/PS4 exclusive. Not sure how they're playing that on a mac lol.
I'm not sure if it is that game, but if it was, they might very well be using the "Remote Play" functionality, which streams the game from the console to a PC or Mac. You'd definitely need a beefy eGPU to decode all those pre-rendered images ;-)