B440 auros pro cooling help

[Walkerie]

Hi all

Set my new pc up yesterday and managed to change the RPM curve for my 3600x to make it quieter below 65c

However I am unable to change my sys_fan1 which is mounted at the back. Its costantly on 100% and supee loud. Its a 3pin connector so cant work out what im doing wrong.

Maybe I need to change it to voltage not pwm somewhere but I cant find it?

Tried using gigabyte siv too which works for my cpu fan but not any case fans.

 

[LuckyBenski]

Sys fan headers are sometimes not adjustable (moreso in older boards but still).

It's worth checking the motherboard manual. Is it a Gigabyte B450 Auros Pro?

 

[Walkerie]

Sys fan headers are sometimes not adjustable (moreso in older boards but still).

It's worth checking the motherboard manual. Is it a Gigabyte B450 Auros Pro?

Oh interesting! Ill take a look. I only have

Cpu fan
Cpu fan opt
Sys fan 1
Sys fan 2

The rest are rgb headers dotted around. Wonder what I can do

Yep thats the one

 

[LuckyBenski]

Motherboard manual says they're all 4-pin headers with PWM and voltage control available.

Yes you will need to set it to voltage control I assume, as it's a 3-pin fan. I misunderstood it as a 3-pin fan header on the motherboard