I've just answered this somewhere else. Try the settings below. 25C/40 60C/50 65C/80 70C/100 What this does is that, at lower temps, the fans will not ramp up as fast or as intensely, and it will only ramp up upon actual use. There's probably also a ramp up and ramp down speed adjustment. Set it to the highest you can find. Should be 0.7s and 1.0s respectively. Answer from KohGeek on reddit.com
Reddit
reddit.com › r/buildapc › cpu stock fan fluctuating and constantly changing speeds on new pc
r/buildapc on Reddit: cpu stock fan fluctuating and constantly changing speeds on new PC
December 27, 2019 -
I have the amd stock cooler on my ryzen 5 3600. I can hear a fan running quickly a bit then slowing down for a couple of seconds, its not really that loud but definitely noticeable and a bit annoying. Checked using HWMonitor and the cpu temp (40-50C) + stock cooler speeds are always fluctuating while everything else is more stable. Is this normal? and is there a way to make it more constant? this happens while pc is idle not even while gaming. Also should I download the latest bios for my mobo? (b450 Tomahawk max). Currently using the balanced power plan instead of the ryzen balanced one which did not make a difference
Top answer 1 of 2
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I've just answered this somewhere else. Try the settings below. 25C/40 60C/50 65C/80 70C/100 What this does is that, at lower temps, the fans will not ramp up as fast or as intensely, and it will only ramp up upon actual use. There's probably also a ramp up and ramp down speed adjustment. Set it to the highest you can find. Should be 0.7s and 1.0s respectively.
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Yeah, it’s normal for the fan to speed up
PCPartPicker
pcpartpicker.com › forums › topic › 267234-constantly-changing-fan-speed-help
Constantly changing fan speed? Help!!! - PCPartPicker
I think the problem is a combination of the monitoring being extremely sensitive to changes in temps and applying too much or too little voltages / PWM signal to the fan for those moments. Sadly no way to smoothen out or delay fan spin up and down time. This is problematic with CPU's which ...
Videos
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Tom's Hardware Forum
forums.tomshardware.com › home › components
CPU fan speeds up for no reason, then slows down again | Tom's Hardware Forum
November 23, 2017 - When the fan speeds up that generally means the CPU is generating more heat, i.e. more processing. The thermistor could be bad but that would be very rare in my experience. I would look at what processes are running when the CPU starts spinning up. As always check for a BIOS update and besure ...
Reddit
reddit.com › r/buildapc › pc fans speeding up and slowing back down?
r/buildapc on Reddit: PC Fans Speeding up and Slowing back down?
July 26, 2018 -
Hey guys, I built my PC last November and it's ran well since then but within the past few days I've noticed something that I think is a bit odd.
I bought The Witcher 3 to play when my friends aren't on or when I just want to play a good single player game. While playing, I noticed that my PC fans were speeding up and slowing down what I considered to be pretty randomly. I figured it was since I had a lot of the graphics turned up pretty high so I turned some of them down but the fans still seemed to be fluctuating in rpm's. I then noticed they were doing similar fluctuations while I was playing CS:GO, where I have all but one or two settings turned down as low as possible.
I have an NZXT kraken AIO so I checked the connections plugging in the pump to make sure they weren't loose or anything. I guess that really only leaves my GPU fans and case fans but I'm not sure what I need to do next if there is anything wrong in the first place.
My build is as follows:
Case: NZT S340 elite
CPU: Ryzen 5 1600
GPU: Asus Dual Series 1070
CPU Cooler: NZXT Kraken X62
Case Fans: stock NZXT for exhaust and stock kraken fans for intake
Edit: I usually play with headphones on so this may have started earlier but when i was playing The Witcher using my speakers is when I first noticed the fans doing this. I also had my headphones off when I was playing CS:GO and noticed it.
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Try turning on the CPU fan smoothing option in your BIOs. I've had a similar problem with a Ryzen 1700 & 2700X. Ryzen boosts, has a voltage spike, results in a temperature spike and the fans ramp up to compensate. In my case it was most noticeable at idle where light tasks (like a web browser) would make the fans ramp up for a second, which is more annoying than a consistent drone. By adjusting the CPU fan smoothing you can made the fans less 'bursty' when responding to CPU temperature spikes. You could also make your fan curve less aggressive. Alternatively you could try overclocking which disables the boost and locks at a clock speed. This thread has a bit of discussion about it.
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Fans spinning faster when components are under load is normal. Sounds like you just need to set a custom fan curve so they don't ramp up in such a quick fashion. Should be able to get a CPU & case fan curve in your BIOS. GPU fan curve with your Nvidia driver, MSI Afterburner or possible an ASUS graphics card utility?
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I got it working a bit better, albeit still a bit loud. I guess I'll just deal with it for now and upgrade later to a Noctua or something. Thanks for the help/advice though.
Self awarded Best Answer removed by moderator
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Look for EZ Mode - Hardware Monitor in Bios see page 42
https://download.msi.com/archive/mnu_exe/mb/E7C02v1.3.pdf
Cybersided
cybersided.com › home › random pc fan revving: what causes it & how to fix it
Random PC Fan Revving: What Causes It & How to Fix It
September 17, 2021 - It’s reasonable and completely normal to expect that your CPU will cross into the 40C region for brief periods of time during normal use, and when that happens, your fan will “rev up” the speed. This could be the entire cause of your annoying fan revving situation! The cure for cases like this is to ensure your fan speed is constant over the entire region of “normal use”. This means that if your CPU regularly operates at temperatures from 20C to 50C, for instance, your fan curve should specify a single speed for that temperature region.
Reddit
reddit.com › r/buildapc › cpu fan keeps chaning speed for no reason
r/buildapc on Reddit: CPU fan keeps chaning speed for no reason
February 11, 2022 -
Hello, I recently build this PC like a week ago. The CPU fan I believe is the cause here, because I can hear it constantly fluctuating in speed. It will do this all day, everyday, no matter if I have only the internet open up. It's not like i'm opening up a demanding video game and it changes speed, no it will change speed back and forth all day long it's kind of weird, even if i'm just watching a youtube video is keeps speeding up and slowing down and I can hear it because it's loud. Any known fix? CPU fan is a hyper 212 air cooler
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its not weird, its completely normal, if configured correctly the fan speeds will vary according to processor/motherboard temperature
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Maybe try tuning the fan curve? Fans are usually set to run faster if the temp goes up. That could even be from small load changes on the CPU from background tasks. Probably either your fans need tooned or your cooling is inadequate for that CPU, probably the former.
Tech Support Forum
techsupportforum.com › home › forums › hardware support › motherboards, bios|uefi & cpu
[SOLVED] CPU Fan constantly changing speeds | Tech Support Forum
September 26, 2012 - Re: CPU Fan constantly changing speeds Check to make sure the heatsink is properly seated. If it wobbles around on top of the CPU then that would explain why your fan is is making so much noise as it is trying to cool off something that it's ...
Groovy Post
groovypost.com › how-to › stop what’s revving your cpu fan constantly in windows 10
Stop What’s Revving Your CPU Fan Constantly in Windows 10
July 14, 2021 - The cpu fan was constantly running and things were staying hot. Closing most of my open Chrome tabs helped, but I also tried another tip: using Change Advanced Power Settings> Processor Power Management, I reduced the Maximum Processor State from 100 percent to 90 percent.
Linus Tech Tips
linustechtips.com › computer hardware › cpus, motherboards, and memory
Constantly changing fan speed - CPUs, Motherboards, and Memory - Linus Tech Tips
February 15, 2018 - Hey guys Just finished my PC build not too long ago. Here is the part list: https://pcpartpicker.com/list/T6NY6X However, I am finding something really odd. The fan speed continuously fluctuates, almost like it is pulsing. I have a few hypotheses for why this might be happening. 1. I did not conn...
The Windows Club
thewindowsclub.com › the windows club › general › cpu fan runs at full speed all the time
What to do when your CPU Fan runs at full speed always?
The most common cause why a CPU fan would run at full speed is that its sensor is not working properly. The solution here is to replace the fan itself. But you need to see that the processor is not always hot.
Published October 5, 2024
Unraid
forums.unraid.net › home › community › motherboards and cpus › [solved] constantly changing fan speeds
[SOLVED] Constantly changing fan speeds - Motherboards and CPUs - Unraid
April 11, 2024 - Hi guys and gals I have a rather annoying problem. The fans within my unraid server are cycling from slow to fast every 5 or 6 seconds. This starts just prior to unraid booting and when going faster it is loud. Hoping someone can help? My setup is as per below, thanks!
H|ard|Forum
hardforum.com › [h]ard|ware › amd processors
my cpu fan speeds up and slows down | [H]ard|Forum
January 8, 2019 - I was having issues with cpu fan spinning up and down constantly on my 2700x, or anytime I opened a webpage or did anything basically. I went into bios and adjusted fan curves a bit.. also changed my fan delay to several seconds and it has really cut down on the fan ramping up and down.
Quora
quora.com › Why-is-my-computer-fan-constantly-revving-Even-when-its-not-hot-overheating-and-Im-not-on-my-computer-it-revs-it-does-so-constantly-when-I-am-on-it
Why is my computer fan constantly revving? Even when it's not hot/overheating and I'm not on my computer it revs, it does so constantly when I am on it? - Quora
Constant fan revving despite low apparent load usually means something is driving the fan controller to demand more airflow or the control loop can’t reach a stable lower speed. Diagnose and fix by checking four categories: hardware, firmware/software, sensors, and environment. ... Dust/obstruction: dust in heatsink/blower or restricted intake/exhaust raises fan speed even with modest CPU ...
Tom's Hardware Forum
forums.tomshardware.com › home › components
One of my pc's fan's(or cpu or gpu fan) keeps increasing and decreasing speeds | Tom's Hardware Forum
July 16, 2017 - What I suspect is happening is that your system often is running just on the border temperature between two fan speeds. So you could change the fan response curve to get it to run a bit faster at slower speeds, and maybe get it set so it does not keep changing so often.
Tom's Hardware Forum
forums.tomshardware.com › home › components
My fans are constantly breathing up and down ... | Tom's Hardware Forum
October 26, 2017 - Automatic fan speed control by the mobo means that each fan's speed WILL change, according to the cooling demand, which depends on how much work the system is doing at that time. Such changes typically are in modest steps, not very small increments. The way that is done is that each fan header (CPU or CHA fan) is linked to a temperature sensor in the system, and it is those measured temperatures that drive the fan speed controls.
MSI
forum-en.msi.com › home
Fans suddenly start to increase speed
April 19, 2024 - MSI Global English Forum
Tom's Hardware Forum
forums.tomshardware.com › home › cooling
[SOLVED] - CPU fan is running rather erratically | Tom's Hardware Forum
March 19, 2020 - With the exact identity of the fan and mobo we can look up the fan specss and the mobo header options and advise whether you should make a modest change to the alarm limit for CPU low fan speed. Click to expand... Hi Paperdoc and thank you for your reply. I'm using the CPU cooler that comes with the Ryzen 9 3900X in the same box. My mobo is Asus tuf gaming x570-plus WiFi. ... If your fans are ramping up and down more be better to set your own fan curves using the bios or software . I tend to have the case fans at a constant and CPU fan and GPU fans to slowly increase as temps get higher and to update less often every 10 seconds just personal preference 🙂
Quora
quora.com › Why-does-my-fan-keep-fluctuating-in-speed-by-itself
Why does my fan keep fluctuating in speed by itself? - Quora
Fans with electronic speed controllers, ... speed. Variable-frequency drive (VFD) or motor controller behavior · HVAC or industrial fans with VFDs may ramp, cycle, or hunt for setpoints if sensors or PID tuning are imperfect. ... Thermostats, temperature sensors, or CPU fan headers change speed as they ...
Linus Tech Tips
linustechtips.com › computer hardware › cooling
CPU Fan Keeps Ramping Up and Down - Cooling - Linus Tech Tips
July 8, 2020 - https://linustechtips.com/topic/1112554-cpu-fan-keeps-ramping-up-and-down/ More sharing options... Followers 1 · Go to topic listing Cooling · Stuck at motherboard logo · OGSxMiDNiT3 · 2 hours ago Posted in Troubleshooting · 8 · AMD drivers, hopelessness ·