LegionFanControl

What is LegionFanControl?

LegionFanControl takes advantage of hidden settings within the embedded controller of Lenovo Legion laptops to influence fan behaviour.

As of this writing it is not possible for complete manual control of the fans, however LegionFanControl can "lock" the fans when a Lenovo Legion laptop reaches a user-defined fan speed.

The "Fan Speed Lock Hunter" mode briefly engages the hidden 100% fan speed mode, and then locks the fans once the laptop has reached the user-defined target fan speed

"Auto EC Control" mode is the closest we can get to custom fan curves on Lenovo Legion laptops. This will lock and unlock the fans, depending on user-defined temperatures and fan speed targets.

Known Compatible Lenovo Legion Laptops

  • 2021 Legion 5 17" - AMD Ryzen 5000 & Nvidia RTX 3000 series - 17ACH6H

  • 2021 Legion 7 - Intel Core 11000 & Nvidia RTX 3000 series - 16ITHg6

  • 2021 Legion 7 - AMD Ryzen 5000 & Nvidia RTX 3000 series - 16ACHg6

  • 2021 Legion 7 Y9000P - AMD Ryzen 5000 & Nvidia RTX 3000 series - Y9000P

  • 2021 Legion 7 Y9000K - Intel Core 11000 & Nvidia RTX 3000 series - Y9000K

  • 2021 Legion 5i Pro - Intel Core 11000 & RTX 3060/3070/3080 series - 16ITH6H

  • 2021 Legion 5i Pro - Intel Core 11000 & RTX 3050 series - 16ITH6

  • 2021 Legion 5 Pro - AMD Ryzen 5000 & Nvidia RTX 3060/3070/3080 series - 16ACH6H

  • 2021 Legion 5 - AMD Ryzen 5000 & Nvidia RTX 3060/3070/3080 series - 15ACH6H

  • 2021 Legion 5 - AMD Ryzen 5000 & Nvidia RTX 3050 series - 15ACH6

  • 2021 Legion 5 - Intel Core 11000 & RTX 3060/3070/3080 series - 15ITH6H

  • 2021 Legion 5 - Intel Core 11000 & RTX 3050 series - 15ITH6

  • 2021 Legion 5 Pro R9000P - AMD Ryzen 5000 & Nvidia RTX 3000 series - R9000P

  • 2021 Legion 5 R7000P - AMD Ryzen 5000 & Nvidia RTX 3060/3070/3080 series - R7000P

  • 2021 Legion 5 R7000 - AMD Ryzen 5000 & Nvidia RTX 3050 series - R7000

  • 2020 Legion 5 17" - Intel Core 10000 & Nvidia RTX 2000 series - 17IMH05H

  • 2020 Legion 5 - AMD Ryzen 4000 & Nvidia RTX 2000 series - 15ARH05H

  • 2020 Legion 5 - Intel Core 10000 & Nvidia GTX 1660 / RTX 2000 series - 15IMH05H

  • 2020 Legion 5 - Intel Core 10000 & Nvidia GTX 1650 series - 15IMH05

  • 2020 Legion 5 - AMD Ryzen 4000 & Nvidia GTX 1600 series - 15ARH05

  • 2019 Legion Y540 - Intel Core 9000 & RTX 2000 series - Y540-15IRH

  • 2019 Legion Y540 17" - Intel Core 9000 & RTX 2000 series - Y540-17IRH

If you have a 2020 or newer Lenovo Legion laptop and you can't see your model listed above, please join the Unofficial Lenovo Legion Community Discord to help add official compatibility.

Known Incompatible Lenovo Legion Laptops

  • 2021 Legion Slim 7 - AMD Ryzen 5000 & Nvidia RTX 3000 series - S7 15ACH6

  • 2020 Legion 7i - Intel Core 10000 & Nvidia RTX 2000 series - 15IMHg05

  • 2019 Legion Y740 (all variants)

Downloads

2021-11-18 - v1.17

2021-11-17 - v1.15

2021-11-04 - v1.12

2021-10-21 - v1.09

2021-10-19 - v1.08

2021-09-24 - v1.06

2021-09-23 - v1.05

2021-09-20 - v1.04

2021-09-16 - v1.03

2021-09-09 - v1.02

2021-09-08 - v1.01 - First Public Release

Feedback & Bug Reporting

If you have any ideas, feedback, or encounter any bugs, head over to the Unofficial Lenovo Legion Community Discord and let me know!

Disclaimer

LegionFanControl is provided "as is" without any warranty. Use of LegionFanControl is at the end-user's own risk.

The developer will not be held responsible for any damage caused as a result of installing or using this software.