The resulting fan RPM values are not exact and it seems that when trying to force the fan > 3500 RPM it won't rotate faster.
![how to use hwinfo 64 fan speed control how to use hwinfo 64 fan speed control](https://www.mod-bros.com/user-upload/topics/1024/image-thumb__1178__forum-editor-image/d31cac2a-6415-424b-a287-649c14d671ec.png)
Note that the temperature values are not in Celsius as I already mentioned, but in duty cycles of a PWM pin input. So after checking a dump from 8740w, the pre-defined look-up table looks like this: And this is something I don't want to be responsible for.
![how to use hwinfo 64 fan speed control how to use hwinfo 64 fan speed control](https://www.xbitlabs.com/wp-content/uploads/2021/03/hwmonitor-available-fans.jpg)
I can think about adding some simple option to fix an issue, but giving the users too much control over the Temperature/Fan LUT (Look-Up Table) would be a bit complicated to implement and if not properly configured could cause damage.