Get Thermal Fan Control decrypted

First read, then use !

Get Thermal


Here how it works at least with the 9860 (there are several other Notebooks this software works with) - but remember, these are my own experiences, change whatever only at your own risk, and please correct me if anything is wrong, thank you :



RED BOX shows CPU-Fans Speed in Hex Code.

Radio Buttons in the GREEN BOX turn on or off possibility to change fan speeds.

If SetOn is selected in the GREEN BOX you can additionally select one of the three fan options by clicking on one of the three Radio Buttons in the BLUE BOX. If you pull the trigger under the BLUE BOX you change the fan(s) speed. As you can see, you can select eighter the CPU fans, the System fan (= Ram fan) or the VGA fan.



AC2 Trip temp can be edited by selecting text field in the ORANGE BOX , typing in the start temp value as described above and finally pushing the Set Trip Point Button in the YELLOW BOX. Afterwards the set temp value appears in the ORANGE CIRCLE


Fan Off temp can be edited by selecting text field in the GREEN BOX , typing in the start temp value as described above and finally pushing the Set Trip Point Button in the YELLOW BOX. Afterwards the set temp value appears in the GREEN CIRCLE

----------------------- Closer Description -----------------------------------------------------------------------------------------------

1) Critical, Throttle, Loc Fan, Loc Down are values for malfunction, don´t touch them, otherwise system could throttle down too early, shut down and not boot up anymore.

2) Changing AC1 Trip, AC0 Trip and all Duty values (3xF_1, 3xF_2) has absolutely NO effect on fan behavior.

3) You can adjust automatic fan control with just the two values Fan Off and AC2 Trip.

Fan Off: If temp is increasing/decreasing this is the point where at fans turn on/off.

AC2 Trip:

- If temp is decreasing, this is the point where at temp row ends and fan speed stays on lowest speed until Fan Off is reached. (0xf59)

- If temp is increasing, this is the point where at temp row starts with lowest fan speed and gets higher step by step with each degree.


4) Never Set Off User Set without being aware of what you do. Set all fan values to highest point and you can do whatever, otherwise CPU/GPU/RAM/VRAM could be damaged in worst case.


5) Your lappy won´t fly away with highest fan speed settings if you put a heavy book on each side of it...... just kidding. Fans are built to spin, so if you like it, let them spin and enjoy it....


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Now some explanations to the table...

CPU fan speed is defined with hex number count. One row in hex has 16 values (1,2,3,4,5,6,7,8,9,a,b,c,d,e,f). Fan speed reaches from FFF to 0. "0x" is just a prefix. So we have 16x16x16 fan speed values, these are 4096. If you use your mouse pointer to adjust the cpu fan speed, you will see that there are much more less values. But if you click on the trigger and use the right and left arrow keys, you can see that the value can be adjusted exactly on any of the 4096 value points.

In automatic fan control 16 speed values have been defined. First and last are fans off and max.

On the table you can see each one of these 16 values in hex counter. According to this value you can see System Fan speed in % at each one of the steps. Next you see the decimal position in the hex row from 4096 to zero and next the difference between two steps.

From column G to L you can see the exact fan speed behavior from AC2 Trip Point on if set to the highest value. So f.e. if AC2 is set to 45C, fan speed at 52C will be level 8 value 0xeec which is on position 3821 of 4096. If you look at the table a minute you will understand, that the automatic control system is very easy structured. If you want to know how fans behave at what AC2 value just start the row at this temp, that´s it.

My experience is, that lowest possible temperature with my system is given when AC2 is set to 45C, temp never gets over 59C. The price for coolness is a noisy background. Original values set AC2 to 60C, and it´s true, lowest pre-defined fan speed is working for 50-55C in normal working mode, which is acceptable. And don´t forget : Set Fan Off low - fans won´t stop --> no wiggling fans.

*** EDIT **** inserted above

Get GetThermal here:

http://www.notebookforums.com/showthread.php?t=82094

And remember point 1) and 4) - you use it at your own risk - you are responsible yourself for what you do......

Again: It doesn´t matter what you put there. It has no effect. Let it be or type in anything, no effect.

While doing some work (Surfing, Office, Music) AC2 to 60C is perfect while Fan Off at 35. Temp stays around 50C or even lower. No need to change settings. For playing I set AC2 to 45C or push them all to maximum. Although..... here no need to push them all up, AC2 to 45 is better... in both ways max CPU temp is 59 here..... it seems as if from around 50-60% on upwards VGA fan speed has no important effect.