https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Mon, 06 Apr 2026 04:37:48 +0000 Fri, 20 Mar 2020 20:05:35 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=13885 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=13885&PID=73684&title=understanding-fan-speed-control#73684 Author: Dice
Subject: 13885
Posted: 20 Mar 2020 at 8:05pm


Hello,

Motherboard: asrock z390m-itx/ac

I recently added two noctua fans in the bottom of my case. I entered my bios to confirm they were detected and working. I have played with the system for a day of two and everything works as it should

For some reason I wanted to see what the Fan Turning option did and didnt realize it said - Detect the lowest fan speed in the system - in the description.

The system did a - Detecting your fan speed - and I had to wait.
When it was finished it said:
Cpu fan 1 minimal duty = 20%
Chassie fan 1 minimal duty = 25%
Chassie fan 2 minimal duty = 20%
Can someone explain what this means?

Ever since I pressed that option I have noticed my PC generates more noise, even at idle! Now, it annoys me that I can hear it compared to before!
I have pressed the Load default uefi setting and it still does it.
All of the fans er set to standard.

My FAN setting:
CPU FAN 1 Setting - Standard mode

CHA_FAN1 /W_PUMP Switch - CHA_FAN1
Chassis FAN 1 Control Mode - Auto
Chassis Fan 1 Setting - Standard Mode
Chassis Fan 1 Temp Source - Monitor M/B

Chassis Fan 2 setting - Standard Mode
Chassis Fan 2 Temp Source - Monitor M/B

CPU temp at IDLE is 48C and Motherboard at 43C

I wonder i the person before me did a fine tune of the system but I?�pretty sure everything was at default /stock.]]> Fri, 20 Mar 2020 20:05:35 +0000 https://forum.asrock.com/forum_posts.asp?TID=13885&PID=73684&title=understanding-fan-speed-control#73684