Feral GameMode vs OpenGameBoost

Feral GameMode is a free Linux daemon and library that lets games request temporary optimisations to the host operating system or game process. It can adjust the CPU governor, I/O priority, process niceness and scheduler policy, inhibit the screensaver, change GPU performance mode, pin or park CPU cores, and run custom scripts. Games and launchers with built-in support can activate GameMode automatically; other games can be launched with the gamemoderun command or a Steam launch option. GPU performance mode is supported for NVIDIA and AMD, while GPU overclocking is listed for NVIDIA. The project lists packages for Ubuntu, Debian, Solus, Arch, Gentoo, Fedora, OpenSUSE and Mageia, with possible availability elsewhere. Configuration uses a gamemode.ini file with options for GPU and CPU settings, filters, supervisor access and scripts. GameMode is maintained by Feral Interactive and is available under the BSD 3-Clause License (Revised). Its build depends on Meson, internal communication uses systemd, and development requires a C environment. For hybrid GPU commands such as optirun, automatic integration after game startup is unavailable; a wrapper with gamemoderun is described instead.

OpenGameBoost is a free, open-source gaming optimizer for 64-bit Windows 10 and Windows 11. Game Mode can suspend Explorer, browsers, and game launchers to free CPU and RAM, then resume them instantly when deactivated. The application can flush unused process memory, switch to the High Performance power plan, change network settings by disabling Nagle’s algorithm and NetBIOS, and adjust game GPU scheduling priority through registry changes. Automatic detection can activate Game Mode when supported games launch; the listed detection catalog contains 18 games, including Call of Duty, Fortnite, Apex Legends, Counter-Strike 2, Valorant, League of Legends, and Minecraft. Supported launchers include Steam, Epic, Battle.net, EA, Ubisoft Connect, and GOG. Supported browsers include Chrome, Firefox, Edge, Opera, and Brave. Administrator privileges are required for full functionality. Downloads come from the Releases page; source setup requires Python 3.9 or newer. Changes are described as reversible.