How to control Fan Speed: Make Your PC Quiet

Your computer probably has a few fans inside it. There is usually one for CPU cooling, one or more for the graphics card, and one to four that attach to the case itself.

They’re required to keep electronics cool, but they shouldn’t be too noisy. In fact, unless you’re running any demanding applications – such as games or video editing, it’s possible that the fans are running so slow they’re almost inaudible.

Any fans connected to the PC’s motherboard can be controlled depending on the temperature, but those that are connected directly to the PC’s power supply can only run at a fixed speed.

So the method to control them will depend on how they are powered. So you’ll have to remove the side panels from your PC to take a look. When you do this, it’s a good idea to turn off the switch on the mains (or on the wall) but leave the wires connected so the PC has a ground connection – you don’t want to damage anything with static electricity.

How to control fan speed

Above is a fan connected to the power source with a four-pin Molex plug. Sometimes such fans have a second cable protruding from the main body with a switch to adjust the speed, but if not, the only way to adjust its speed is to buy a controller. fan with corresponding Molex socket.

For fans with smaller three- or four-pin connectors attached to the motherboard, they can be controlled by software or in the BIOS.

How to identify which fan is noisy?

Remove the left panel from your computer case (left when viewed from the front). Turn on the power and listen. You can tell if there is a particularly noisy fan just by listening. However, if you’re careful, you can gently press on the center of most fans on CPUs and graphics cards to slow them down – even stop them spinning. Do not jam the pen into the blades: it may cause some fins to break.

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Stopping each fan in turn will give you a clear indication of how much that fan is contributing to the overall noise.

There can be a lot of fans all making a lot of noise, in which case you can follow the procedure below to use software to make them spin slower. Or, if you can’t control them because they use Molex plugs, you may want to buy a replacement, quieter fan. maybe controlled by your motherboard.

How to control fan speed

How to make your PC fans quieter

Clean them up!

All is well and good with the internal settings of the PC, but instead, sometimes a little house cleaning can solve your problem.

Dust is a big problem for PCs, as they attract it like no one’s own business. Material that builds up in or around the fan ports can make it harder for hot air to get out and thus make the fan work harder.

If you can, open up your computer case and do a little spring cleaning. You can use a vacuum cleaner to remove dust, just make sure that the plastic nozzle is inserted at the end and that you are very careful not to touch any of the components. A can of compressed air is another option here.

You should also make sure that air can pass freely around your PC. So if it’s stuck between boxes under your desk, buried among papers, or just in a poorly ventilated area, then you’ll hear the humming of those fans more often. necessary level.

Change fan speed in BIOS

When you turn on your PC for the first time, it goes through various checks and settings before you can use it. These are contained in something called the BIOS (Basic Input/Output System), which you can access and change.

To do this, you need to turn off your PC first, then power it back on. Look for a message that will appear very quickly saying something along the lines of ‘Press XX to enter setup’, where XX will probably be Delete or F2, F10 or another key.

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If you miss it and it goes by very quickly, then just reboot your machine and try again. Eventually you will arrive at the right time and be presented with the Startup menu page.

how to control fan speed

Here you will find an option called BIOS Setup or something similar. Each manufacturer has its own BIOS, so the exact name varies from machine to machine.

You should now see an information page about your PC. Find the System Configuration option, navigate to it (usually using the cursor keys), then find your fan-related settings.

On our test machine, this option called ‘Fan Always On’ was enabled.

how to control fan speed

Most PCs will give you the option to set a temperature threshold for when you want the fan to work. Be sure to set these thresholds appropriately, as letting your PC run too hot for too long can cause serious damage to your machine.

When you’re done, press F10 to Save & Exit, then your PC will reboot with new adjustments, a permanently fixed device.

Control fan speed by software

Although we are mainly talking about PCs, you can use software to control fans on laptops as well as PCs. In fact, on many laptops, the only option in the BIOS is to completely turn off the fans, which is a very bad idea. If your PC has a similar setting then you’ll want to look for some third-party software to help.

The most popular is SpeedFan, which has had many iterations since 2000.

how to control fan speed

This free app gives you impressive control over the fans connected to the motherboard, allowing you to choose how fast they spin at different temperatures. Once you have it installed, launch it and click on the Fan Control tab. Here you can see a list of your motherboard’s fan controllers, with a drop-down list near the middle where you can select each fan individually.

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While SpeedFan covers a wide range of motherboards, there are still some that exceed its impressive capabilities. In this case, you might consider buying a fan controller. They usually fit into a spare 5.25in bay on the front of the PC and you connect a certain number of fans to it.

They allow you to adjust fan speeds individually via knobs or other controls, but the downside is that most controllers like these are completely manual and don’t automatically adjust speed based on heat. degree. That means your PC can overheat if you forget to turn on the fan before playing, such as a game.

However, Thermaltake’s Commander FT has both manual and automatic modes and isn’t too expensive from Amazon.

How to control fan speed

Read about fan controls and other ways to reduce noise from your machine in our guide to making your PC quieter.

Here you have it. Some quick ways to try and control your fans. Hopefully now you can enjoy your digital adventure without the roar of an engine spinning in the background. Ah, sweet serenity.

Of course, if you want to use your noisy PC as an excuse to switch to a new, super-quiet, fanless laptop, you’ll find plenty of tempting options in our machine guide. Our best laptops.

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