Asrock ab350m micro atx fan speed/voltage

modmasta1

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Dec 20, 2017
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I bought 2 Corsair Air Series SP120 High Performance fans and they are blowing way higher than I need them to and are making so much noise that it sounds like a hurricane (and are vibrating a lot). I have them connected to a splitter cable with a 4 pin connector (they are 3 pin themselves) in my 4 pin slot on my motherboard.

I cannot find out how to reduce the speed of the fans. Trying to do so under chassis fan 1 in my bios changes nothing. I heard you can reduce the voltage to reduce the fan speed but I see no option of doing that in my bios. I also tried using Corsair Link which doesn't let me change anything.

Is there any way to turn these loud as hell fans down?
 
Solution
Your MoBo manual, page 59, covers the fan control method,
link: http://asrock.nl/downloadsite/Manual/AB350M.pdf

Under "Chassis Fan 1 Setting", select "Customize". After that, you can adjust the fan curve by yourself. If the default fan curve is to aggressive for you, lower the temp targets, so that the fans would spin slower. E.g 30% at 40°C, 50% at 50°C, 70% at 60°C.

Also try to change the "Chassis Fan 1 Temp Source" from MoBo to CPU or vice-versa and look if it has any effect.

Do note that changing fan settings may not give immediate effect and you may need to save settings and exit BIOS before fans start to operate according to the new settings.


lmnvum

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Dec 25, 2017
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710
If you plug in a 3 pin into a 4 pin, adapter or not, it will function. However you do not get the 4 pin features such as digital speed control :)

Cheers and good luck ,


lmnvum
 

Aeacus

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Your MoBo manual, page 59, covers the fan control method,
link: http://asrock.nl/downloadsite/Manual/AB350M.pdf

Under "Chassis Fan 1 Setting", select "Customize". After that, you can adjust the fan curve by yourself. If the default fan curve is to aggressive for you, lower the temp targets, so that the fans would spin slower. E.g 30% at 40°C, 50% at 50°C, 70% at 60°C.

Also try to change the "Chassis Fan 1 Temp Source" from MoBo to CPU or vice-versa and look if it has any effect.

Do note that changing fan settings may not give immediate effect and you may need to save settings and exit BIOS before fans start to operate according to the new settings.



Got a question for you: If the 4th pin gives digital speed control then what kind of control you have if you only have 3-pin fan? No control? Mechanical control?
 
Solution

lmnvum

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Dec 25, 2017
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710



I meant as in the 3pin gets controlled by different voltage it gets, whilst the 4pin gets controlled by a program that lets you customize it. ( therefore digital as in program) I probably could've worded it better eh? :lol:
 

Aeacus

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When it comes to fan control (2-pin, 3-pin or 4-pin fan), what differs is the control method, either DC mode or PWM mode. While both modes are still digital.

An example:
Corsair Commander Pro can control 3-pin and 4-pin fans, either in DC mode or PWM mode,
specs: http://www.corsair.com/en-gb/corsair-commander-pro

Corsair Commander Pro also needs Corsair Link software to control the fans. My question is: What kind of control you have over 3-pin fan? Is it digital or something else?
 

Aeacus

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Corsair AF-series fans have very poor performance, even for an airflow fan.

To OP:
For solid airflow fan, Arctic F12 PWM is good choice,
specs: https://www.arctic.ac/eu_en/arctic-f12-pwm.html
(I've used Arctic F12 PWM fans with several of my builds.)

Or if you want even better performance, look towards Noctua,
e.g NF-S12A PWM, specs: https://noctua.at/en/products/fan/nf-s12a-pwm/specification

pcpp: https://pcpartpicker.com/products/compare/BgvRsY,cXg323,CKFXsY/

But first, try to get your fan speeds lower since that doesn't cost you any money.
 

modmasta1

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Dec 20, 2017
12
0
510


How can I change the voltage going to the fans? I know lowering the voltage can decrease the fan speed.

Also I already tried controlling the fan through the bios under chassis 1, it didn't do anything. Even set all the temperatures to 0% and it was still running at full speed.
 

Aeacus

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If you have the AsRock A-Tuning utility installed then within Win, open it up and change the fan curve from there.

When that too doesn't work then last option before opening the wallet would be trying to control your fans with SpeedFan software.
download: http://www.majorgeeks.com/files/details/speedfan.html
tutorial: https://www.youtube.com/watch?v=6QBW_dxXvbk

If the SpeedFan also fails then either there's something wrong with your MoBo since it fails to control 3-pin fans or the Corsair SP120 fans themselves doesn't want to play nice with AsRock MoBo.