LACT vs PenguinBurner

LACT is a free, MIT-licensed Linux tool for controlling and monitoring AMD, Nvidia, and Intel GPUs. It reports VBIOS, VRAM, hardware units, Resizable BAR status, and Vulkan features. Monitoring provides configurable historical charts for power, thermals, and frequency, plus throttling information and CSV export. Controls include power caps, AMD power states, GPU and VRAM clocks, and custom fan curves on AMD and Nvidia. Undervolting uses voltage offsets on AMD and VF curves on Nvidia. Profiles can activate according to running processes or gamemode status. A system service applies GPU configuration without depending on a graphical session and can run headless from a configuration file. LACT includes an OpenTelemetry metrics exporter and exposes a JSON API over a Unix socket or TCP. The TCP listener is disabled by default; remote TCP management has no authentication or encryption. Packages are listed for several Linux distributions, with Flatpak and Docker service-only options. Available controls vary by GPU generation, driver, and hardware.

PenguinBurner is a free, open-source Linux application for tuning NVIDIA GPUs through automatic undervolting, overclocking, and per-game profiles. Auto-UV runs a managed Q2RTX benchmark and CUDA load, then finds and verifies stable voltage-frequency settings. Adaptive mode switches among saved Efficiency, Balanced, and Performance tiers to pursue a game's FPS target and reduce power use when headroom exists. Profiles work with Steam, Lutris, and Heroic, applying at launch and restoring the standing profile when a game exits. An overlay can display base FPS, frame-generation FPS, latency, clocks, power, temperatures, and the active tier. Manual voltage-frequency and fan-curve editors are included, along with a generated silent fan curve. The install guide lists NVIDIA RTX 30, 40, and 50 cards and requires the proprietary NVIDIA driver and CUDA. Linux installation options include pip, Flatpak, Fedora COPR, AUR, and Ubuntu PPA packages.