Do you meant the Qfan Tuning? I would recommend doing the tuning as it allows the BIOS to determine the range of speeds that your fans are capable of. Once tuned, whatever preset you choose will be more accurate with fan speeds. Answer from jo148 on reddit.com
Reddit
reddit.com › r/asusrog › q fan default settings or optimise all?
r/ASUSROG on Reddit: Q Fan Default settings or optimise all?
July 3, 2021 -
Hi all! I've recently moved to b550 f gaming and I see the option Q Fan. And I was wondering should I just leave this option as it is as default settings or should I go into q Fan tab and click optimise all and then save the settings ?
Does clicking on 'optomise all' make any difference in performance ?
Which option is better ?
Top answer 1 of 2
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Do you meant the Qfan Tuning? I would recommend doing the tuning as it allows the BIOS to determine the range of speeds that your fans are capable of. Once tuned, whatever preset you choose will be more accurate with fan speeds.
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I was wondering this same thing I just updated my bios. Bad part is some of my fans are hooked up directly to the power supply guy on YouTube said that’ll just have them running at full speed all the time
Wadaef EN
en.wadaef.net › q-fan-control-optimize-all
Q FAN CONTROL OPTIMIZE ALL - Wadaef
June 24, 2024 - Before adjusting Q Fan Control settings, make sure your motherboard’s BIOS is up to date. Manufacturers often release updates that improve fan control algorithms and overall system stability. Most motherboards allow users to create custom fan curves that dictate how fan speeds ramp up based on temperature. Experiment with different curves to find the optimal balance between cooling performance and noise levels.
Videos
02:42
How to Reduce CPU cooler noise using Smart Q-Fan in BIOS ...
How to Increase CPU fan speed on Windows 7/8/10
14:38
How to set up SpeedFan - Free fan control software - YouTube
00:58
PC Fan Optimization with ASUS Motherboard #Shorts - YouTube
How To Control Case & CPU Fans With ASUS Motherboards ...
05:31
Using Q-Fan Control to get Quiet Computer Fans - YouTube
Toolify
toolify.ai › ai-news › optimize-your-pc-cooling-control-case-cpu-fans-with-asus-motherboards-95160
Optimize Your PC Cooling: Control Case & CPU Fans with ASUS Motherboards
December 26, 2023 - Navigate to the Q Fan Control section, configure individual fans, and click on "Optimize All" to find the high and low spots for all fans. Q: What is Fan Expert 4, and how do I install it? A: Fan Expert 4 is software provided by Asus for controlling fan speeds in the Windows operating system.
Tom's Hardware Forum
forums.tomshardware.com › home › cooling
[SOLVED] - What is the best q fan control setup for case fans | Tom's Hardware Forum
August 15, 2020 - The fluctuations are normal, because some apps are running in background ( virus checker, rgb-controlling software like razor synapse, corsair iCue etc. - depends on your components - you can check it in task manager). My CPU- and chassis-fan-settings are manual .... straight line up to 60 degrees and 100% fan. But that's my own preference, some other members might have different opinion about that. For my asus crosshair viii hero and 3950x my settings seem optimal ( at least for me 🙂).
Linus Tech Tips
linustechtips.com › computer hardware › cpus, motherboards, and memory
Asus Q-Fan control problem - CPUs, Motherboards, and Memory - Linus Tech Tips
January 24, 2023 - Hello everyone! My chassis fan 1 minimum duty cycle is at 60% while chassis fan 2 is 20. I would like to make my pc quieter by creating a new fan curve but I can't go under 60%. I have tried optimizing all and that didn't help.
Reddit
reddit.com › r/buildapc › should you use q-fan control optimize on a new build in the bios or should you use another fan app or just ignore at stock?
r/buildapc on Reddit: Should you use Q-Fan Control optimize on a new build in the bios or should you use another FAN App or just ignore at stock?
April 25, 2025 -
Hey Everyone,
Finished a new build, curious but are we supposed to use ASUS Q-Fan control and hit "Optimize" in the BIOS or is it better to ignore as the board has AI that will handle it? Or should I leave it alone and use a trusted fan control app if needed?
The board is the ASUS B850-F and a Ryzen 9950x3d w/ a Noctua DH-15 G2 cooler in a ASUS ProArt PA602 case.
Some threads said you should so the system can understand the max speed the fans can hit - is this true?
Sorry its been 9 years since I built a new pc - unsure atm :/
Also - is it better to do fan optimization in the morning after the pc has been off for the night to get a better read or does it not matter?
Tom's Hardware Forum
forums.tomshardware.com › home › systems
Qfan/Cpu Fan Speed | Tom's Hardware Forum
May 6, 2018 - There are issues whereby Windows 10 would cause an improper fan operation for the CPU_FAN. I would also suggest that you're on the latest BIOS update for your motherboard. My motherboard is Z270 and it is on the latest update, the threshold for the Fans to work after i did the Optimize all option is 40 C now which will get the fans to 35% Rising to 100% if the Temp reach 100%, what is worrying me is whenever i run an application they work for an instant then go off again which made me think that the Power Surges will kill the Cpu fan, The Cpu is i7-7700k, The pc is Mainly used for Adobe Creative suite and Renderings
Linus Tech Tips
linustechtips.com › computer hardware › cpus, motherboards, and memory
Q-Fan Control Reccomendations? - CPUs, Motherboards, and Memory - Linus Tech Tips
April 9, 2021 - Hello, so I just built my first PC and was playing around with some settings to optimize performance and all of that. I have a 3700x with a ASUS ROG Strix B550-F (Wifi), with idle temps around 38 to 45C. I wanted to know if I should leave it at boost mode or if this more aggressive custom fan cur...
Reddit
reddit.com › r/buildapc › asus q-fan control question!
r/buildapc on Reddit: Asus Q-Fan Control Question!
January 7, 2019 -
Hi all,
I'm using 6 120mm xspc rgb fans connected through a 12v xspc 4-pin pwm hub. The hub then connects to chassis 2 fan header on an asus z390-e motherboard. The fans are rated for 800-2200 rpm. When I set the fan curve to the very minimum speed (20% i think), for some reason the fans start at 1240 rpm... I was confused at how it started at this speed but after some guessing I figured its 800rpm+(20% of 2200) which comes to 1240 rpm. Is there a way to set the minimum speed at 800?
Thank you so much and please let me know if I need to clarify on anything!
Top answer 1 of 2
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Set the minimum percentage to 0? Based on what you've already found (20% going to 20% of max duty cycle) then it seems to me that setting it to 0 should set it the the fans minimum duty cycle.
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Percentage and fan speed cannot be calculated. Every fan responds to PWM signal in their own way. Even if their speed range was identical, one can run 1200 @ 20% and the other 1200 @ 40%. You can try DC control but that might dim the leds.
Reddit
reddit.com › r/buildapc › [troubleshooting] asus "optimize all" qfan questions
r/buildapc on Reddit: [Troubleshooting] ASUS "Optimize All" QFAN questions
February 26, 2021 - I tried out the "optimize all" QFAN functionality last night on my Z270e mobo with Cryorig H7 CPU fan (I also have stock fans on my NZXT S340 Elite case). I ran optimize all in the BIOS, but it ended up setting the Cryorig to run at 100% all the time in PWM mode.
Tech News Today
technewstoday.com › home › hardware › asus fan control: expert's guide for efficient cooling
ASUS Fan Control: Expert's Guide for Efficient Cooling - Tech News Today
July 27, 2023 - From the left pane, choose Optimize All. The Qfan Tuning dialogue box should appear. Here, hit the Ok button. Wait for the fan calibration to complete.
Reddit
reddit.com › r/techsupport › i accidently changed my q-fan settings in my bios and now my temps have jumped up? can anyone help me get them back to normal? i dont know if i have disabled some fans or maybe something else.
r/techsupport on Reddit: I accidently changed my Q-Fan settings in my bios and now my temps have jumped up? Can anyone help me get them back to normal? I dont know if I have disabled some fans or maybe something else.
June 28, 2020 -
It's a pre-built gaming PC so not sure if the company had set certain fan speeds/curves before delivering.
Here is a HWMonitor screenshot
https://imgur.com/a/VrdtAPp
Fancontrol
fancontrol.org
Fancontrol – Control Every Fan. Optimize Every Degree
Fancontrol – Control Every Fan. Optimize Every Degree
Take full control of your system cooling with Fancontrol. Customize fan speeds, reduce noise, and optimize temperatures for peak PC performance.
AddictiveTips
addictivetips.com › home › how to increase fan speed on pc for better cooling
How to Increase Fan Speed on PC: Methods for Better Cooling
August 18, 2025 - Learn how to increase fan speed on your PC using BIOS, software, or third-party tools. Improve cooling, reduce overheating.
Quora
quora.com › What-is-a-CPU-Q-fan-Control-How-do-you-change-its-settings
What is a CPU Q-fan Control? How do you change its settings? - Quora
Answer: This is the Asus software used to control control fan speeds autonomously. Generally this software is only accessible through the Asus BIOS. To access it, you'd restart the computer and access the BIOS while it's booting (Generally this ...
Settings Lab
settingslab.com › asus-q-fan-control-best-settings
ASUS Q Fan Control Best Settings – Settings Lab
If you have your Q-Fan utility set to run at Windows Start Up, consider using the following settings. ... After some time, your ASUS system might display a CPU Fan error. When this message occurs, it shows that the system does not detect the fan. The following steps can help solve the problem ... You might also have to update your BIOS. However, we recommend that you do not perform this setting without the help of a professional. After all...
Geeks on Site
geeksonsite.com › home › computer diagnostic & repair › guide to control fan speed on windows pcs
Guide to Control Fan Speed on Windows PCs | Geeks on Site
August 18, 2025 - Open configuration, go to advanced and then change the manual controller of the fan. In the Fans tab, select the rate (0-100%) for each fan, according to the requirements. On the left-hand side, choose the option, “Configure,” then translate ...
Digital Trends
digitaltrends.com › home › computing › how tos
How to control all your PC fans using Fan Control - Digital Trends
March 8, 2024 - That's where we come in: Here's how to use Fan Control to manage all of your system's fans. Note: This particular software is available on Github and is developed by an independent developer. We used it for a couple of weeks on a desktop PC running Windows 10 and didn’t face any concerning issues.
Top answer 1 of 3
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Okay folks, it's a good job I'm thick-skinned, otherwise I might be embarrassed.
A friend came round to lend a hand and discovered a cable fouling the blades of one of the GPU fans. The other fan must have been working overtime to compensate. Obstruction cleared, it now runs like a dream. So it was a rather low-tech solution in the end!
Thanks for your help everyone.
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Okay folks, it's a good job I'm thick-skinned, otherwise I might be embarrassed.
A friend came round to lend a hand and discovered a cable fouling the blades of one of the GPU fans. The other fan must have been working overtime to compensate. Obstruction cleared, it now runs like a dream. So it was a rather low-tech solution in the end!
Thanks for your help everyone.
Hey everyone, necro-ing this because we'd been scratching our heads for 4 hours+ (Googling, trying every fan control software out there) and it turned out to be the GPU fan caught in a cable. I can't tell you how much this helped us.
Noctua
noctua.at › en › support › faqs › how-do-i-optimise-my-fan-settings
FAQ: How do I optimise my fan settings? | Noctua
Sometimes another key (such as F2) needs to be pressed on start-up – this information will be displayed on the start-up screen or is otherwise mentioned in the motherboard’s manual. Once in the BIOS/ UEFI, navigate to the fan settings. Depending on the motherboard manufacturer and motherboard model, the fan settings can be found in either the hardware monitor, Qfan control, the system tab, Smart Fan Mode, or a similarly named setting.