What is lact?

LACT is a desktop application for Linux that lets you control and monitor your graphics card (GPU). It supports AMD, Nvidia, and Intel GPUs and gives you a graphical interface for tasks that normally require command-line tools or driver configuration files. On the information side, LACT shows detailed hardware specs for your GPU: its name, manufacturer, memory type and size, how many compute units it has, and which graphics features it supports. You can watch live charts of power draw, temperature, and clock speed over time, and export that historical data as a CSV file if you want to analyze it later. For control, the app lets you set a power cap to limit how much electricity your GPU consumes, configure custom fan curves so the fans spin faster or slower based on temperature, and adjust clock speeds for the GPU itself and its memory. On supported AMD hardware, you can also reduce voltage to lower heat and power draw without sacrificing performance. Settings profiles let you define different configurations and switch between them automatically depending on which games or applications are running. LACT works as a background service called lactd that runs at system startup and does not need a desktop environment to function. The graphical interface connects to this service, but you can also control it through a config file or leave it running on a machine without a screen. This separation means your fan curves and power settings stay active even after you log out. Installation is handled through the standard package managers on most major Linux distributions, including Arch, Fedora, Debian, Ubuntu, NixOS, and Solus. A Flatpak version is also available for systems not covered by those packages.