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Linux vs Windows tested in 10 games - Linux 17% faster on Average
(video.hardlimit.com)
From Wikipedia, the free encyclopedia
Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
Community icon by Alpár-Etele Méder, licensed under CC BY 3.0
Gabe Newell has been openly critizicing Microsoft for quite some time now and therefore, Valve has been pro Linux for years.
It is not too far fetched that the Steamdeck is their second attempt to make Linux gaming more widespread after the failed "Steamboxes". This and they took the opportunity to make a PC-Switch knock-off when the market was perfectly ready for it.