CPU Fan vs System Fan – What’s the Difference?

When it comes to computers, there are a lot of different parts that work together to keep everything running smoothly. Two essential components are the CPU fan and the system fan. But what exactly is the difference between these two types of fans? Here’s a quick breakdown:

In this short blog post, we’ll explain in detail about CPU Fan vs System Fan, the function of each header and why you might need it. We’ll also talk about what a Sys fan, and CPU fan are and provide tips on choosing the right fan for your system or computer. So read on to learn more!

What is a CPU Fan?

Like most people, you probably don’t understand the difference between a CPU fan and a system fan. And that’s okay – they both do a great job of cooling down your computer. But there are a few key things to know about each one. A CPU fan is a small, low-power device that helps to keep your computer cool by dissipating heat from the processor. It’s plugged into an AC outlet and uses very little energy, so you can leave it running all the time if necessary.

A system fan works in conjunction with your motherboard’s cooling system and is larger and more powerful. It blows air over the hottest parts of your PC – typically the processor and graphics card – to help keep them cool. So, in a nutshell, a CPU fan is a low-power device that helps to keep your computer cool, while a system fan is a larger, more powerful device that helps to cool down the processor and graphics card.

CPU Fan vs System Fan - What's the Difference?

What is the function of a CPU fan?

If you’re experiencing high system temperatures, replacing your CPU fan might be a good idea. Not only will this help to disperse heat from the CPU, but it will also help keep it cool and running at its maximum efficiency. If you experience excessive fan noise, it may be time for a system fan to be installed.

In extreme cases, a system fan can help reduce damage caused by thermal gradients across a computer’s components. So, whether you’re experiencing high system temperatures or fan noise, don’t hesitate to contact us for help. We’re here to help!

Read also: Best Gaming Cpu For 2022

What is the function of a system fan?

When it comes to hardware, there are a lot of different elements that need to work together to function correctly. One of these is the processor, which is cooled by a system fan. This fan extracts heat from the processor and dissipates it through the chassis or computer case.

This prevents the processor from overheating and ensures optimal performance. If you experience any problems with overheating, don’t use a system fan – this will only create noise and waste energy. Instead, install a CPU fan in front of the heatsink.

What is a Sys Fan?

If you want to keep your computer cooler and quieter, you should consider replacing your CPU with a sys fan. A sys fan is a system fan that cools your computer’s processor. It can lower your laptop or desktop temperature when it gets too hot.

Additionally, a sys fan belongs in addition to other fans in your computer and needs to be replaced only if it becomes damaged or worn out. Sys fans are typically quieter than CPU fans and won’t create as much noise when working. So, if you’re looking for a fan to help cool your computer and keep it quieter, a sys fan is the perfect option.

CPU Fan vs System Fan - What's the Difference?

When Should I Upgrade My Sys Fans?

Many people think a CPU fan is only used to cool the processor – but this isn’t always the case. System fans play an important role in protecting your computer from overheating too. It’s recommended that you replace your system fan every 3-5 years, depending on how often you use your computer and the quality of your build.

When Should I Upgrade My CPU Fans?

If you’re noticing that your computer’s processor isn’t as excellent as it used to be, or if weird noises are starting to come out of your machine, it might be time for a CPU fan upgrade. These fans are small and low-powered motors, but over time they can wear out and may not be able to keep the processor cooling adequately. If this is the case, you may notice that the computer doesn’t feel too hot when touched – it’s time for an upgrade! You can purchase CPU fan upgrades online or from a hardware store. Make sure you research first to get the best deal on what will work best for your system.

Frequently Asked Questions

What is the difference between a CPU fan and a system fan?

The fan on your computer’s processor (CPU fan) helps to cool down the processor, while the fan on your computer’s system case (system fan) helps circulate air throughout the entire computer. If you have a dual graphics card, installing both a CPU fan and a system fan is recommended.

Why do I need to replace my system fan?

It is always essential to keep your computer system fan running and replaced when necessary to prevent it from overheating and becoming noisy. A system fan helps to circulate air and prevent the PC from getting too hot, reducing the chances of crashing or other hardware problems. On average, a system fan should be replaced every 6 months to ensure continuous hardware wear and tear. However, it is always advised to do a system fan check before replacing it to ensure that the fan’s noise level is negligible.

Can I disable my CPU Fan to save on energy costs?

There is no one-size-fits-all answer to this question, as deciding whether to disable your CPU Fan depends on the specific case and your computer’s specifications. However, it is generally a bad idea to disable your CPU fan as this can lead to system instability and increased susceptibility to hardware failures.
Additionally, disabling a fan can cause increased air noise and heat emission from the computer, both undesirable conditions. Therefore, it is generally recommended that you keep your CPU fan enabled.


Thanks for reading! This blog will discuss the functions of CPU fans and Sys fans. We will also be providing a comparison between these two fan. So, stay tuned!

Mike Anderson
Mike is a PC hardware enthusiast who has been writing about PCs and technology since he graduated from Iqra University. He started blogging about 5 years ago as a way to share his passion for technology with others, and he continues to write today because he loves it.