Question My case fans go to 100% on OS boot and can't change them

Aug 3, 2022
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Hi, so I tried making my fans quieter because i got annoyed that they are so loud when i'm not doing anything on the pc.
SPECS:
MOBO = Gigabyte b660m gaming x
FANS = Random case fans using a controller, plugged into SYS_FAN3
Things i tried:
  1. Using the Smart Fan6 in BIOS = It does the job but only when i'm in BIOS, once OS starts loading they go full speed.
  2. Using Gigabytes SIV app with the Smart Fan 6 as well = doesn't do anything to them. I can't see the PWM setting in the app.
  3. BIOS reset = didn't do anything
  4. Argus monitor? = didn't do anything
Also idk if it's connected to the issue but i cant change the LED colors from the RGBFusion software, only by a button on the case(Genesis irid515 argb) but it might just be the controller's flaw.
 
Aug 3, 2022
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they are not quiet, just not running as fast
Well they aren't that loud that i should get different ones i think. Just need them to not work on 100% all the time, doesn't matter if i'm playing anything or the pc is idle, they just shouldn't always work full speed.
 

geofelt

Titan
What is the controller that you are using that is plugged into sysfan3?
Sysfan3 has a 4 pin pwm connector.
But, if it is connected via 3 pins then it is voltage controlled.

Fans will be louder when running at 100% speed.
Fans will run slower if they do not get full 12v.
Or,
Fans will run slower of they do not get full voltage all of the time.
delivering intermittent voltage is what pwm fan control does.

It would describe your setup a bit better, it would help.
You post suggests that you are using two or more fans.

Why not connect the case fans directly to the motherboard?
 
Reactions: Dark Lord of Tech
Aug 3, 2022
7
0
10
0
What is the controller that you are using that is plugged into sysfan3?
Sysfan3 has a 4 pin pwm connector.
But, if it is connected via 3 pins then it is voltage controlled.

Fans will be louder when running at 100% speed.
Fans will run slower if they do not get full 12v.
Or,
Fans will run slower of they do not get full voltage all of the time.
delivering intermittent voltage is what pwm fan control does.

It would describe your setup a bit better, it would help.
You post suggests that you are using two or more fans.

Why not connect the case fans directly to the motherboard?
They were built into the case and connected to the controller, in the manual it says that it is a 4-pin PWM cable. I went into BIOS, changed settings there so it sees it as a PWM connection, set everything up and it worked but only when i'm in the bios or the pc starts. Once the OS starts loading it just goes full speed and stays like that.
 
Last edited:
Aug 3, 2022
7
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