Legion Fan Control

What is LegionFanControl?

LegionFanControl takes advantage of hidden settings within the embedded controller of Lenovo Legion laptops to influence fan behaviour. It can also change various different power states to further reduce temperatures and fan noise.

LegionFanControl is completely free with no ads.

Features

  • Change Legion Power Mode & Windows Power Plan

  • Modify the Fan Curve to ignore overly aggressive GPU temperature response

  • Engage maximum fan speed mode

  • Change Advanced Thermal Optimsation without needing to reboot

  • Lock the fans to the current speed

  • Enable/Disable dGPU TDP Boost, keeping your dGPU at base TDP specs

  • Enable/Disable CPU Boost, keeping your CPU at base TDP specs

  • Read current CPU temp and dGPU temp, according to the embedded controller

  • Read current fan speed (%)

As of this writing it is not possible for complete manual control of the fans, however LegionFanControl can lock the fans to work with the below features:

  • Fan Speed Lock Hunter - Attempts to locks to the target fan speed if reached after briefly engaging maximum fan speed mode

  • Auto Fan Lock - Lock and unlocks the fans depending on current sensor readings and user-defined targets.
    If your current fan speed is equal to or below your Low Fan Speed Target AND the temperature is below your Temperature Threshold, it will lock the current fan speed.
    If your current fan speed is equal to or above your High Fan Speed Target AND the temperature is above your Temperature Threshold, it will lock the current fan speed.

Known Compatible Models

  • 15ACH6

  • 15ACH6H

  • 15ARH05

  • 15ARH05H

  • 15IMH05

  • 15IMH05H

  • 15ITH6

  • 15ITH6H

  • 16ACH6H

  • 16ACHg6

  • 16ITH6

  • 16ITH6H

  • 16ITHg6

  • 17ACH6H

  • 17ARH05H

  • 17IMH05H

  • 17ITH6H

  • R7000

  • R7000P

  • R9000P

  • Y540-15IRH

  • Y540-17IRH

  • Y9000K

  • Y9000P

Known Incompatible Models

  • S7 15ACH6

  • 15IMHg05

  • Y740 (all variants)

Other Models

If your model isn't listed above then LegionFanControl will attempt to discover if your laptop is compatible. If you have a 2020 or newer Lenovo Legion laptop, please consider joining the Unofficial Lenovo Legion Community Discord to help add official compatibility.

Downloads

Latest Readme

2021-12-24 - v1.22

2021-12-14 - v1.20

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.