What is Proton? The Steam Deck's live-or-die software, explained

Looking at the spec sheet alone, the just-revealed $399 Steam Deck gaming handheld should be a winner. Valve’s PC-centric Nintendo Switch rival features a big 7-inch touchscreen, plenty of control inputs, an all-AMD chip based on the same hardware inside the Xbox Series S|X and PlayStation 5, and the ability to double as a full-fledged Linux PC. But forget the hardware. While it’s impressive indeed, the Steam Deck will sink or swim based on its software, and that mean’s Valve awesome Proton technology is about to be thrust into the spotlight.

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