Also note that the fans' actual maximum speed may be higher than what you get if you set the speed to "100%". Some systems have more granular fan control while the EC is in charge, but you cannot change the behavior other than picking a thermal profile in Dell Power Manager. Note that without the EC controlling the fans, only three fan levels are available, which I will call "0%", "50%", and "100%". You can set up your own temperature thresholds for fan behavior based on your own preferences. Once this is done, a tool like SpeedFan or Hwinfo64 can be used to control the laptop fans. This tool basically just allows you to tell the EC (embedded controller) in the laptop to let go of fan control. If you have found this tool helpful and would like to consider chipping in a few bucks, send me a PM. I will remove this line once the cost has been offset. I have already received donations, and the remaining amount is $15. Note: I am interesting in offsetting the cost of the certificate used to sign the driver, which was $75. There is prior discussion of these tools as well as development chatter about this tool in this thread:Ĥ24778940z's tools seem to be derived from Linux work done on fan control, including the "i8k" driver, and these projects: This project uses the SMM I/O driver developer by 424778940z and is derived from the "Dell fan utility" GUI app, also by 424778940z. Old, unmaintained C++ version is available at. This program is part of a suite of tools called DellFanManagement. A command-line app that allows you to take over fan control in many Dell laptop/notebook computers.
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