No. 4 of 18 ·GPU Overclocking Software

LACT

Linux · Self-hosted · API

Freedom report

Two barsScore 6.4

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely1 of 6 device platforms
DocumentedPlans, terms and facts published

LACT is ranked #4 of 18 in GPU overclocking software on Freedom251. It runs on API, Linux, Self-hosted. There is a free plan.

LACT plans and pricing

All plans

LACT Free Linux GPU control and monitoring · MIT-licensed github.com · 4 Oct 2026

Compared on GPU overclocking software

GPU vendor support: multi-vendor
Custom voltage control: Yes
Fan curve control: Yes
Power limit control: Yes
Tuning profiles: Yes
Operating systems: linux

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The record

Purpose: LACT lets users control AMD, Nvidia, or Intel GPUs on Linux.
GPU information: It reports GPU details such as VBIOS, VRAM, hardware units, Resizable BAR status, and Vulkan features.
Monitoring: It provides configurable historical charts for power, thermals, and frequency, throttling information, and CSV export.
Configuration: It supports power caps, AMD power states, custom fan curves on AMD and Nvidia, and GPU or VRAM clock configuration.
Undervolting: GPU undervolting is available through voltage offsets on AMD and VF curves on Nvidia.
Profiles: Profiles can activate automatically based on running processes or gamemode status.
Metrics integration: LACT includes an OpenTelemetry metrics exporter.
Background service: GPU configuration runs through a system service that does not depend on a graphical session, and the service can run headless from a config file.
Hardware support: The project documents AMD, Nvidia, and Intel GPU support, with available controls varying by GPU generation, driver, and hardware.
Installation: The project lists packages or installation options for distributions including Arch, Debian/Ubuntu, Fedora, Gentoo, openSUSE, NixOS, and Solus, plus Flatpak and Docker service-only installation.
API: The daemon exposes a JSON API over a Unix socket or TCP, and the TCP listener is disabled by default for security reasons.
Remote management security: The README says remote TCP management has no authentication or encryption and should be used only on trusted networks or with appropriate firewall rules.
Configuration safeguard: API configuration changes require confirmation or are automatically reverted after a short period, five seconds by default.
Maker: The repository identifies Ilya Zlobintsev as its owner and describes LACT as a Linux GPU Configuration And Monitoring Tool.
Price from: Free

Where it ranks on Freedom251

Best GPU Overclocking Software in 2026#4 of 18
Best GPU Tuning Software in 2026#6 of 15

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Sources

github.com/ilya-zlobintsev/LACT· checked 4 Oct 2026
github.com/ilya-zlobintsev/LACT/wiki/Hardware-Supp· checked 4 Oct 2026
github.com/ilya-zlobintsev/LACT/blob/master/docs/A· checked 4 Oct 2026