Surprising Ways to Control Your CPU Fan Speed Without Ever Touching Your BIOS!

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If you’ve ever desired to alter the speed of your CPU fan without accessing the BIOS, it’s possible! It is not advisable to attempt this task unless you are completely familiar with your system; however, if for any reason access to the BIOS becomes unavailable then this simple procedure should allow one to regulate their cooling accordingly.

If by chance changing your fan speed proves too challenging, consider purchasing a better CPU cooler. Not only will this provide more efficient cooling but it will also come with an upgraded fan that can be adjusted at any moment – something that even high-end models do not offer!

Discover how to increase or decrease CPU fan speed without BIOS adjustments in this guide!

Why would you want to control your CPU fan speed?

If you’ve ever experienced an overheated system, then you know it can be a trying experience. Despite its obvious advantages, for some reason many users prefer keeping the heat on their CPU at bay.

Although having the fan speed set to its maximum setting may seem like a wise decision, it’s actually more energy efficient to leave it at one RPM. This helps cut down on unnecessary power consumption and extend the life of your components!

Yet, if your computer cannot keep up with processing demands and temperatures rise beyond optimal levels, it is prudent to consider reducing your CPU fan speed in order to keep things cool – without sacrificing performance!

If you find that your system exceeds the recommended temperature range for any component of your machine (such as RAM or processor), then it may be beneficial to adjust fan speeds accordingly and minimize thermal load on those areas.

Save Electricity

Most enthusiasts are aware to set their CPU fan speed at its optimum level and leave it there. This practice helps minimize noise while maximizing cooling performance.

But if you’d prefer to have some more control over the specification, why not experiment with changing it? If this merely entails a few RPMs’ worths of difference, then it may be unnoticeable. However, if you could gain a few percent by reducing the speed without affecting airflow – that would be ideal!

Minimize Noise While Sleeping

Sleep is a legitimate activity, as it’s utilized by many systems to save power.

If you’re one of those who slumbers regularly on your machine it’s fortuitous to know that there’s an easy way to reduce its volume: simply set the fan speed down! By default, it runs at its maximum setting, but if you wish for silence when one awakens – simply select the desired level and the issue will be resolved.

To ensure that CPU fans remain at their coolest possible speeds while sleeping, this software offers an ideal solution.

Don’t Enable “Smart Fan 5” Automatically

Like most components, your CPU fan can be set to a variety of speeds. However, not all levels are ideal for every situation – and some may even prove hazardous!

In an effort to streamline the process of managing fan speeds, manufacturers have introduced several technologies designed to enhance efficiency and silence operations. One such feature is known as ‘Smart Fan 5’, which preemptively engages fans in order to generate optimal airflow based on current conditions. This can lead to potential issues when misconfigured; stay vigilant if you wish to make any adjustments at all!

If you find that Smart Fan 5 is optimizing your system’s operation unnecessarily, there exists an option within the BIOS menu for disabling it completely. If unplugging your CPU from its power source does not reset the fan speed settings then simply refrain from enabling this function until after installation is complete – making sure everything is up-to-date before doing so will yield optimum results!

Prevent Overheating during Games or workloads

Extremely tedious, don’t you think? It’s no secret that gaming can lead to intense heat inside your rig. If your CPU fan speed is inadequate for dissipating excess heat, it could result in an overheated system!

With the help of a tool like SpeedFan or HWMonitor, we can quickly and easily adjust our processor fan speed without even needing to open up the BIOS. This gives us an easy solution if we find its capabilities lacking during demanding tasks like streaming gameplay or rendering graphics while playing games – simply tweak things until they’re optimum!

Make Your Computer Quiet at Night (for Sleep Mode)

  •  Prevent the fan from spinning all the time by enabling Quiet Mode in your BIOS or, alternatively, by disabling it when not being used.
  • To access the settings for your configuration, simply locate your computer’s serial number (located on its motherboard) and enter it into the BIOS.
  • Select the Configurations option, then click to select the Fan Speed Settings sub-menu and locate the PWM (Pulse Width Modulation) setting. From here you can make alterations such as increasing or decreasing fan speed by altering a value between 0 and 90; this determines how much noise will be generated by the system once it activates sleep mode.

You Have an Emergency

Are you a devoted Mac owner? Are you worried about losing access to your files when there’s an emergency requiring immediate attention?

A noteworthy feature of the latest MacBook Pro models is their ability to be upgraded without having to shut down your system. This functionality provides users with ample opportunities for self-rescue in the event of an unforeseen situation – making it especially useful if one loses power during travel!

Repair Work

If your computer fan isn’t performing optimally, or at all, there are a few simple tricks that can be employed to speed it back up.

  • If your PC is still within its warranty period and the fan has failed completely, an expert technician may be able to provide assistance in obtaining a replacement. Alternatively, you may find success with a DIY repair using parts from your local hardware store.
  • If the CPU fan fails but is not broken beyond repair, don’t despair! Utilize this guide to successfully replace your damaged fan without investing in one of those pricey new models.


To further increase fan output, don’t forget about the CPU PWM header. By utilizing onboard voltage regulation circuitry (through the CPU fan header), you can regulate its speed by applying different levels of voltage to this circuit – providing an entirely new degree of flexibility!

If you’d like to dial up your CPU fan speed higher than its BIOS-level level allows, simply locate and lift up on the +12V motherboard jumper.

This picture demonstrates an extreme example: my processor has been accelerated to 3.2GHz using all available overclocking settings, but it’s still not even close to being fast enough for my needs! So with quick appended jumpers from within the board’s VRM section, I have now dialed up +20% in order to increase power output for maximum performance out of this system.


So, don’t be intimidated by the array of options available to you! With a little knowledge and effort, you can quickly optimize your system and make it run at peak performance.