There is an unwritten rulebook that every major Linux distribution follows. Compile packages for the oldest CPU anyone might still own. Ship the mainline kernel. Use Valve's Proton for gaming compatibility, because Valve has tested it against thousands of titles. CachyOS breaks every one of those rules, and on modern hardware, it is faster for it.
The performance gains are not theoretical. On an ROG Ally X handheld, CachyOS outpaces SteamOS. On a Razer Blade 18 laptop, it beats Windows 11. The difference is most noticeable in frame-time consistency and 1% lows, the moments in a game where a stutter breaks immersion. Those stutters are what generic binaries and stock schedulers create, and CachyOS has engineered them out.
The core philosophy is simple: the machine on your desk should not be held back by compatibility with hardware you do not own. Most Linux distros compile their packages for a baseline x86-64 instruction set so the same binary can run on a 2008-era Core2Duo and a modern Ryzen processor. CachyOS refuses. Its repositories compile every package for x86-64-v3 and x86-64-v4 instruction sets, with link-time optimization, profile-guided optimization, and BOLT applied to core packages. The installer detects what your CPU actually supports and serves binaries built to use it.
The cost is real and CachyOS does not hide it. If your CPU is from before 2015, the optimized repositories will not work for you. To Linux traditionalists, abandoning old hardware is heresy. But the Steam hardware survey shows that most gamers are on relatively new hardware, and CachyOS treats that as the relevant audience.
The upstream-first mentality gets the same treatment. The responsible way to improve the Linux kernel is to submit patches to mainline, wait for review, and ship what everyone else ships. CachyOS carries its own kernel fork instead. The linux-cachyos kernel ships a tuned EEVDF scheduler by default and offers BORE for users who want maximum responsiveness. It includes performance patches before they land in mainline, sometimes long before, sometimes never. On paper, that should create instability. In practice, the author reports it is the most responsive Linux desktop they have used, even on an Intel-plus-NVIDIA hybrid laptop running Wayland, a configuration that breaks on many distros.
Proton, the compatibility layer that makes Linux gaming viable, is also rebuilt the CachyOS way. The distro ships proton-cachyos with tkg and fsync patchsets, alongside wine-cachyos carrying futex2 and fsync work, all compiled with the same aggressive optimization. A single meta-package pulls in the entire gaming stack: Gamemode, Gamescope, MangoHud, and every other layer, each rebuilt rather than shipped stock.
The results are showing up in the data. In Valve's May 2026 hardware survey, CachyOS gained 4.99 percentage points in a single month, the biggest jump of any distribution. It now holds 17.88% of the Linux gaming market, second only to SteamOS Holo at 22.83%. The gap is largely explained by the fact that SteamOS ships preinstalled on every Steam Deck. Among distros that users deliberately choose and install themselves, CachyOS is winning, and it recently dethroned pure Arch Linux on ProtonDB after a nearly five-year reign.
This is not a recommendation for everyone. If you want a stable system that is hard to break, SteamOS or Bazzite is the better choice. If your hardware is old, CachyOS may not run at all. But for gamers on modern hardware who are willing to trade ecosystem compatibility for raw performance, the "wrong" way of building Linux is turning out to be the right way. The rulebook was written for the widest possible audience. CachyOS wrote a new one for the hardware that people are actually using.