FanCtrl shows temperature, fan speed and allows you to control fans. The percentage of the fan control can be changed to simply control the pwm.(not saved). You can rename each item listed in FanCtrl.

Auto Fan Control

  • Check to enable automatic fan control, select the temperature sensor to target, add the fan to control, and select from the list to display the graph, but adjust the graph accordingly.
  • Mode : only four names are divided, but must be set separately.
  • Preset : Allows you to save or load the current graph's setup state.
  • Unit : You can change the unit of temperature and pwm percentage.(1, 5, 10)
  • Hysteresis : If the pwm changes when the temperature drops, the pwm changes only after the hysteresis temperature drops further.
  • Step : determines whether the graph setting is step or linear.
  • Auto : The fan control operates in the bios default state up to the set temperature. (LHM, OHM, Gigabyte, NvAPIWrapper only, see link)
  • When you click Apply and OK, it is saved as a file and works with the settings you set.
  • Automatically reads from a file to act on the next program run.

On Screen Display (RTSS)

Using external Libraries


  • Motherboards
  • NZXT Kraken
  • NZXT RGB & Fan Controller
  • DIMM thermal sensor
  • Liquidctl


  • .NET framework 4.7.2
  • Visual redistributable 2019(x64)
  • The OSD feature must have the Rivatuner Statistics Server installed and running.