cpu fan speeds up and slows down

PC Fans Speeding up and Slowing back down?

reddit.com › r › buildapc › comments › 922i1g › pc_fans_speeding_up_and_slowing_back_down

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. Answer from Megabyte2 on reddit.com

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.

Top answer

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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?

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 - As always check for a BIOS update and besure you have an adequate CPU fan as well as adequate fans for the case. It could be just compensating for surrounding air temperature if their is not adequate case cooling. Remember all of the other components generate heat as well.

Discussions

Computer speeding up and slowing down

When my computer is on, which is practically all the time, I guess it's the cooling fan in back, but, it continuously slows and speeds up and it is driving me nuts. Most of the time when I'm not using it, I just shut it down. Just wondering if anyone… More on learn.microsoft.com

learn.microsoft.com

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April 9, 2010

Computer speeding up and slowing down

When my computer is on, which is practically all the time, I guess it's the cooling fan in back, but, it continuously slows and speeds up and it is driving me nuts. Most of the time when I'm not using it, I just shut it down. Just wondering if anyone… More on answers.microsoft.com

answers.microsoft.com

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April 9, 2010

CPU fan won't slow down but does speed up - Republic of Gamers Forum - 715785

This is despite the fact that the temps on the CPU are all hovering around 30C and according to HWMonitor the fans are at around 560 rpm even though clearly going at full tilt. Ive tried setting custom as well as standard profiles all with the same result, the CPU fan speeds up and slows down as ... More on rog-forum.asus.com

rog-forum.asus.com

March 7, 2024

PC fans randomly speeds up and slows down every 3-4 minutes or so.

This happens with computers. Even when you're not at your pc it is running processes which will usually spike the voltage and in turn the temperature. There's usually a setting in your fan control software called hysteresis or temperature hysteresis which can compensate with how quickly your fans will react to temperature changes. This is usually measured in two settings for temperature and time, meaning you set how long the temperature difference change has to exist before the fans react to it. This will allow for short spikes in voltage to return to normal temperature before having your fans increase. More on reddit.com

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Corsair Community

forum.corsair.com › forums › legacy topics › corsair product discussion › cooling

Constant up and down fan speeds with no load - Cooling - Corsair Community

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The Windows Club

thewindowsclub.com › the windows club › pc fan randomly speeds up and slows down or stops

PC fan randomly speeds up and slows down or stops

The speeding and slowing down of fans randomly might be associated with the BIOS. We suggest you check for BIOS updates. If an update is available, install it. You can use the dedicated software developed by your computer manufacturer or download ...

Published March 22, 2024

Microsoft Learn

learn.microsoft.com › en-us › answers › questions › 2442303 › computer-speeding-up-and-slowing-down

Computer speeding up and slowing down - Microsoft Q&A

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Hi smileyboy,

The fans usually increase in speed (assuming you have a fan temperature control chip) when the inside of the PC case hits a certain temperature. Once the heat has been dispated then the fan speed will reduce again. That is what normally happens. If the fan speed is up and down without any specific reason then it could be the temperature chip causing the problem or the fan may be faulty; either way a repair technician would need to look at it.

Before you do that, though, try opening the case. I assume we are talking about a desktop PC? If it is a laptop then take it to a repair shop, accessing the fan in a laptop is rather tricky if you don't know what you are doing. As i've said, if it is a desktop, remove the side panel (initially with the machine switched off - remove the plug from the power supply and rmemeber to earth yourself before touching anything inside.) Now look at the fan(s). Is there a build up of dust/grime on the fan blades? If so gently brush the dust of with a small, clean artist brush. Check the heat sink also on the CPU. If dust has accumulated in the heat sink finials then blow it out with a can of clean air. Try running the machine with the cover off to see if the extra air flow cures the problem. Your PC may be overheating causing the fan(s) to speed up to cool thing down. Listen to the fans to see if you can isolate which fan is causing the problem. You will have one fan on top of the CPU (porcessor); you may also have an extractor fan on the back of the case. Another fan is located in the PSU (power supply unit). PSU fans, however, need to be looked at by a qualified technician.

John Barnett MVP: Windows XP Associate Expert: Windows Desktop Experience: Web: http://www.winuser.co.uk ; Web: http://xphelpandsupport.mvps.org ; Web: http://vistasupport.mvps.org ; Web: http://www.silversurfer-guide.com

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I'm glad you found the instructions useful, LitzPlBoy! It is amazing how much dust actually accumulates on these fans overtime.

This forum post is my own opinion and does not necessarily reflect the opinion or view of Microsoft, its employees, or other MVPs.

John Barnett MVP: Windows XP Associate Expert: Windows Expert - Consumer: www.winuser.co.uk | vistasupport.mvps.org |xphelpandsupport.mvps.org |www.silversurfer-guide.com

H|ard|Forum

hardforum.com › [h]ard|ware › amd processors

my cpu fan speeds up and slows down | [H]ard|Forum

January 8, 2019 - Antec 1200 with 12 fans P/P and your scared of overclocking :O Most motherboards allow you to disable that Q fan control so that the fan is running full bore constant in my experience fans tend to last longer when run at full or a set % rather than the up and down constant which is hard on the fan. There are plenty of 3rd party aftermarket type fans that will work well to cool that cpu Deepcool Gammaxx 200 to 400 as example, ~$30 and the cooler does better than stock Ryzen coolers (any of them) I had to LMAO about that casting the demons to hell person ^.^

MS.Codes

ms.codes › blogs › computer-hardware › cpu-fan-speeds-up-and-slows-down

CPU Fan Speeds Up And Slows Down

February 14, 2024 - When the CPU fan speeds up and slows down, it usually indicates that the system is managing its temperature. The fan speeds up to cool down the CPU when it gets too hot and slows down when the temperature decreases.

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Asus

rog-forum.asus.com › t5 › hardware-build-advice › cpu-fan-won-t-slow-down-but-does-speed-up › td-p › 715785

CPU fan won't slow down but does speed up - Republic of Gamers Forum - 715785

March 7, 2024 - Basically, on booting up, my CPU fan is at low RPM as expected as the CPU is not being taxed. If I tax the CPU a little the RPM increases and the decreases as the load lightens on the CPU. However, if I start a game or anything that may make the CPU work fairly hard the RPM on the fan goes high but once the load is gone on the CPU the fan doesnt slow back down again.

reddit.com › r/pcmasterrace › pc fans randomly speeds up and slows down every 3-4 minutes or so.

r/pcmasterrace on Reddit: PC fans randomly speeds up and slows down every 3-4 minutes or so.

May 23, 2023 -

How do I fix it

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This happens with computers. Even when you're not at your pc it is running processes which will usually spike the voltage and in turn the temperature. There's usually a setting in your fan control software called hysteresis or temperature hysteresis which can compensate with how quickly your fans will react to temperature changes. This is usually measured in two settings for temperature and time, meaning you set how long the temperature difference change has to exist before the fans react to it. This will allow for short spikes in voltage to return to normal temperature before having your fans increase.

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I can’t check rn but I don’t think all the fans are doing it by the sound. Maybe it’s only one

MSI

forum-en.msi.com › home

CPU fan constantly speeding up and slowing down ...

November 6, 2017 - Get technical support, game testing articles, and the latest fancy information about MSI Gaming Notebook here ... MSI Gaming Graphics Cards, Nvidia and AMD/ATI-based. ... For you to discuss gaming related topics such as gaming events, your best settings, and etc. No Spam! Thanks! :) ... I can't increase the voltage of my x670e Tomhawk DDR5 RAM to 1.4V. ... Allows members to download files submitted by Moderators.

Tom's Hardware Forum

forums.tomshardware.com › home › cooling

[SOLVED] - Fans going UP and DOWN during gaming! | Tom's Hardware Forum

November 2, 2020 - Which fans, case, gpu or cpu? You need to change the fan curve. It sounds like you have a very steep fan curve that is causing them to ramp up/down significantly when there is only a few degrees change in temperature.

Dell

dell.com › dell community › laptops › locked topics – alienware general

Fan speeds and up and slows down while computer sits idle | DELL Technologies

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Including the video card, I think there are 3 fans and 2 controllers. At a pre-determined temp., they all speed up to the next minor level. Sounds like your idle temp is right on the edge of next level. You can run this: http://www.cpuid.com/softwares/hwmonitor.html Apple desktops work basically the same way.

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Which fan ? Fan speed is determined by real-time cooling requirements ... not current usage (idle, etc.).

reddit.com › r/pcmasterrace › cpu fan speeds up and slows down constantly

r/pcmasterrace on Reddit: CPU fan speeds up and slows down constantly

July 19, 2021 -

I have a ryzen 2700x and a AMD Wraith Prism LED RGB Cooler Fan. HWMonitor says the temp goes from 93 degrees F to 105 degrees F and the CPU fan rpm 1869 to 2048. Is the fan failing?

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Switch your temperature to Celsius. Everybody uses Celsius for PC temps.

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Is it making an annoying noise or something? Those temps are fine.

Ars OpenForum

arstechnica.com › forums › hardware & tweaking › case and cooling fetish

CPU fan keeps wavering - what's causing it? | Ars OpenForum

June 18, 2012 - I had the same problem with my wife's system, the Operating temp setting was just right where it would hit the temp (45c), spin up the fan, cool down quick (41c), slow the fan down, warm up (45c), rinse, repeat. You can try setting the goal temp in the BIOS either higher (thus running slower more often) or lower (running at a higher speed because it just can't Quite reach goal temp). Either way should solve your problem. ... Yup. I just checked the BIOS and there was an option to enable/disable something called CPU Q-Fan Control.

reddit.com › r/buildapc › cpu fan randomly speeds up and slows down

r/buildapc on Reddit: CPU Fan Randomly speeds up and slows down

December 17, 2024 -

Hey all,

I have a Ryzen 5 7600x paired with a Thermalright AXP90-X47 in a Fractal Terra case (on a Gigabyte b550 board)

Ever since I built it about 1 month ago, the CPU fan Randomly speeds up, even when idle and not doing anything, even when gaming and it being quiet for a while it just ramps up to max for about 5 minutes then goes back down to quiet. (This happens about 2-3 times every hour )

My goal is to make a silent pc, and I even power limited my CPU to 65W (I got the X version because it was on sale and cheaper than the non-X lol) I adjusted the fan curve in bios so it is silent and I have it constant at around the temperatures It has when idle and gaming (so a sudden temperature spike shouldn't change the fan speed)

I installed the Fancurve software and when it ramps up I try to manually set it lower from there but it just won't listen.

I even reinstalled the CPU cooler and put more thermal paste in

I am at my wits and and want to contact customer support because maybe it's something with the product, but wanted to see if any of you faced anything similar.

TL;DR: CPU fan Randomly speeds up when not doing anything special. set a power limit on CPU, set the fan curve to be smooth and not have changes at the temperatures I stay at most frequently. Also tried reinstalling.

P.S. I can provide photos with the power limit settings and the fan curve from bios if they would help

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even when idle and not doing anything, Idle doesn't mean it's not doing anything, it just means you're not doing anything. If you PC is turned on, then it's doing something. By default, your fan curves are likely controlled via your CPU temps. As such, your fan speeds will spin up and down as your CPU temp moves up and down. I installed the Fancurve software and when it ramps up I try to manually set it lower from there but it just won't listen. AFAIK universal fan software doesn't actually work in a lot of cases. You can either adjust fan curves in BIOS or using the motherboard software (I typically use software to tune my fan curves, then set and forget it in BIOS). Simply set the fan curve to not spin up higher until a specific temp. Some will have ramp up or ramp down delay, which is specifically there so your fans don't spin up if you have temp spikes with your CPU.

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 - For example, imagine your fan curve specifies a speed of 30% at a temperature of 25C and a speed of 70% at a temperature of 40C. 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.

TechSpot

techspot.com › community › topics › cpu-fan-speeds-up-and-slows-down.28199

CPU Fan Speeds up and Slows Down | TechSpot Forums

July 6, 2005 - Well, clearly they are spinning since you can see and/or hear them. Perhaps the fans' power connectors have worked loose somehow so that they have power but the sensors' connection are not contacting. Click to expand... Thanks for your response mailpup. That could explain why the bios is reading ...

Linus Tech Tips

linustechtips.com › computer hardware › cooling

How to fix this? Case fan randomly speeds up for a second, then slows back down. - Cooling - Linus Tech Tips

June 10, 2020 - Yesterday after upgrading my graphics card, I dropped the side glass door and it shattered into a million pieces. I noticed something strange, every since this happened, my case fan randomly spins up really loud, for like a second, then slows back down and goes quiet for a few minutes, then again...

HP Support Community

h30434.www3.hp.com › t5 › Gaming-Notebooks › CPU-fan-ramping-up-and-down-for-unnecessary-reason › td-p › 7956936

Solved: CPU fan ramping up and down for unnecessary reason - HP Support Community - 7956936

February 3, 2021 - I reviewed your post and I understand that the fan speed is increasing and decreasing under low load. Don’t worry, I assure you I will try my best to get this sorted. I would like to inform you that this is by design and the fan kicks in when the CPU temperature reaches a certain limit. Having said that, I recommend you update the BIOS and the graphics driver from the below link and check if it helps.