This is the best summary I could come up with:
We can only hope this is the start of a trend, as Valve's gaming-focused operating system brings many advantages over gaming portables (and maybe desktops) that run a full Windows installation.
In an increasingly competitive portable PC gaming market, being able to cut out that significant cost over Windows-based alternatives could be a big deal.
Our review of the ROG Ally highlights just how annoying it can be to have to fiddle with Windows settings on a touchscreen running "an awkwardly scaled" version of the OS.
That comes through in many little ways, like a built-in "suspend" mode, tons of battery-optimization features, and menus that are designed for a small screen and joystick navigation.
That's a huge change from the desktop-focused "Steam Machines" era of the mid-'10s, when early versions of SteamOS could only run the relative handful of games that developers bothered to explicitly port to Linux.
That's also a huge change from the Steam Machines era, when Ars' testing showed that many SteamOS games ran significantly worse than their Windows counterparts on the same desktop hardware.
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