Suggestions appear as you type. Use the up and down arrows to choose one and Enter to open it.

This page's audience real numbers from our own analytics — open to see them
–Visitors
–Page views
–Clicks to vendors
–Time on page
–Reading now
Clicks to vendors, by tool
  • –
Top countries
  • –
Devices
  • –

– · counted by iTechGuides's own first-party analytics, bots removed, every figure rounded down · how we count

LACT

Free#10 of 19 in GPU Overclocking SoftwareGPU Tuning Software

LACT: An open-source Linux toolkit for multi-vendor GPU tuning, monitoring, and automation. Ranked #10 of 19 in GPU Overclocking Software by our editors (7.4/10); pricing: Open source; best for linux users needing APIs and automation.

7.4/10Editor score
Visit LACT
LACT7.4 Visit LACT

At a glance

  • Editor score
    7.4 / 10
  • Pricing
    Open source
  • Best for
    Linux users needing APIs and automation
  • Paid from
    None
  • Custom voltage control
    Yes
  • Facts checked
    20 Sep 2026
LACT screenshot

  • Where it wins

    • Supports AMD, Nvidia, and Intel GPU configuration
    • Includes clocks, undervolting, power, fan, and profile controls
    • Offers CLI, headless operation, CSV export, and a JSON API

  • Where it doesn't

    • Intel hardware support has overclocking limitations
    • Intel drivers do not support fan control
    • Designed for Linux rather than cross-platform desktop use

Our verdict on LACT

LACT is an open-source Linux application for configuring and monitoring AMD, Nvidia, and Intel GPUs. It suits Linux users who need more than basic clock controls, particularly those managing headless systems or integrating GPU settings into scripts and services. The application can run with a graphical interface or as a standalone service, covering GPU information reporting, monitoring, power and thermal controls, clock configuration, undervolting, fan curves, and tuning profiles.

Its strongest differentiator is the combination of desktop controls and automation interfaces. Historical charts track power, thermals, and frequency, while monitoring data can be exported to CSV. The command-line interface supports terminal-based workflows, and the daemon exposes a JSON API over a Unix socket or TCP. Automatic tuning-profile activation adds a way to apply saved configurations as part of a broader operating routine. Multi-vendor support also makes LACT relevant for systems that do not rely on a single GPU manufacturer, although available controls vary by hardware and driver.

LACT is distributed as open-source software under the MIT License. Its practical fit depends on the GPU vendor: Intel support includes hardware-specific limits, including no overclocking and no driver support for fan control. Users who need Linux-native configuration, monitoring, and programmable access should consider LACT, especially for headless or automated environments. Users seeking a cross-platform application, unrestricted Intel tuning, or Intel fan-control support should choose a tool aligned with those requirements instead.

Your product? Our editors can test LACT in depth and publish a review, labelled as paid · from $99/mo →

LACT pricing

Plans Open sourceFree Free to use — no paid tier required for the core job.
See plans on github.com

LACT fact sheet

Free planNot verified
Paid fromNone
GPU vendor supportMulti-vendor
Custom voltage controlYes
Fan curve controlYes
Power limit controlYes
Tuning profilesYes
On-screen overlayNot verified
Operating systemsLinux
DeploymentSelf-hosted, Desktop
PlatformsLinux
SupportCommunity
Built forSolo, Small business (editorial estimate)
PricingOpen source
Websitegithub.com
Facts checked20 Sep 2026

Alternatives to LACT

See all LACT alternatives →

Also Ranked In

LACT is ranked in 2 of our directories.

Used LACT? Be the first to review it

The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used LACT for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.

Write a reviewTwo minutes · verified accounts only · read by an editor before it appears

Reviews come only from verified accounts. Sign in or create an account first — your e-mail is never shown.

Your rating

0 characters · at least 80, up to 3,000

Posted from your verified account. Reviews appear after an editor reads them, usually within two working days.

Featured on iTechGuides

Featured on iTechGuides — LACT 7.4/10

LACT is listed in our GPU Overclocking Software directory. Add the badge to your site — it links back to this page.

<a href="https://www.itechguides.com/products/lact/"><img src="https://www.itechguides.com/best/badge/lact.svg" alt="Featured on iTechGuides" width="230" height="46"></a>

Guides on GPU overclocking software

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. How we rank.

Last updated · How we research and update