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Best case fans

By equipping your PC case and its components with adequate airflow, you will need the best PC case fan. There are a host of different chassis fans to choose from, all of which offer various sizes, noise levels, and airflow. If you have high-end hardware (like large GPUs and powerful CPUs) in your case, on average this hardware tends to generate more heat, which is even more important. If these components are not cooled properly, your PC can increase the ambient temperature of the room and stop working efficiently. Additionally, the additional heat can even shorten the life of some equipment. This is why we like to use only the best fans.

So, if you are looking for the best 80mm, 120mm, 140mm or even 200mm chassis fan, don't worry, we have already provided the service for you. Below is a list of the best chassis fans currently available for 2021. All fans have passed performance, efficiency, noise level and airflow tests.

With this in mind, let's take a look at the top competitors.

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Noctua is highly regarded for its quality, acoustic performance, and cooling, making its chassis fan the best they do. The

Noctua NFA series has an incredible dBa level when operating at maximum RPM, and is also equipped with anti-vibration brackets to further reduce noise.

At 1500 RPM, this thing provides 82.5 CFM at a noise level of 24.6 dBA, making it one of the best box fan choices on the market.


from Amazon If you like RGB, Thermaltake Riing Quad won't let you down. These fans not only make your case look impressive, but the airflow they provide can also keep your components beautiful and cool.

These fans add great lighting options to your case while keeping hot air out of the machine. Even when running at 1500 RPM, the fan only produces 25 dBa

. The fan comes in several different sizes, but only in sets of three, providing a complete set for your case!

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. Don't be fooled by the look (and size); Although it may be an 80mm fan, it still has plenty of airflow compared to other equally small competitors in this category.

This fan uses Noctua's Advanced Acoustic Optimization (AAO) framework and sophisticated aerodynamic design. Equipped with award-winning SelfStabilising Oil Pressure version 2 (SSO2) bearings and 4 vibration compensators, this chassis fan is not only very quiet, but also very efficient.

This 4-pin PWM (Pulse Width Modulation) fan can also be instantly controlled using third-party software. If you want to stay in a low RPM range and don't want to use third party software, it is also equipped with a low noise adapter (LNA).

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This gentle giant may be very large, but it is surprisingly quiet. The noise level is not far from Noctua NFA8.

If you prefer a large fan for a higher CFM, but the RPM is significantly lower, this is one of the best options. With a noise level of just 19 dBA, you'll get a great 110 CFM performance.

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If you need maximum noise reduction, Cooler Master Silencio FP 120 is the best option. The maximum noise level is 14 dBA and no sound can be heard.

Thanks to Cooler Master's Silent driver IC technology, the torque pulse generated by the fan is smaller, which means minimal vibration and ultra-low noise. It is also designed to provide a balance between static performance and airflow.

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Whether we are reviewing a new monitor or the best GPU on the market, choosing the right hardware is always a difficult task.

It takes hours of product research, performance benchmarking, and user feedback review to reach a clear conclusion on the recommended content.

If you are not technically proficient and have difficulty taking the time to meet the above requirements, you may end up buying a box fan that does not suit your specific needs.

But don't be afraid, friends! At WePC, we want to reduce the pressure of research and turn the entire process into a comprehensive, easy-to-follow buyer's guide. That's right, our team of PC enthusiasts did all the hard work for you!

Testing our recommended products is an important part of the overall selection process in our best guide. This is a way to ensure that the product we recommend is undoubtedly the best choice in its particular category.

In order to ensure that the product is "the best", it must show excellent performance in our tests, and show better quality and characteristics than the competition it faces.

Most of the products we recommend at WePC have undergone a rigorous testing process, covering everything from price and performance to quality, efficiency and structural aesthetics.

doing so allows us to provide you with the most accurate product performance evaluation, and finally determine whether it is worth your consideration.

When buying the best PC case fans, you should consider the following factors to ensure that they are not only suitable for your system, but also kept cool enough.

So let’s skip to the most important things to consider when looking at the best fans of 2021.

The first thing to consider is whether it is better to buy a high static pressure fan or a high air flow fan. This is determined by the actual shape of the fan blades. Yes, that is correct. You can get the exact same fan shape and model, but the fan blades are different.

No need to pass spec sheet

Behind the fan. For example, if your case has enough open space, these fans should provide more efficient airflow for your case. The

static pressure fan distributes air more evenly. This means that they are not as strong in a straight line, but they can work well when there are obstacles like components and radiators.

So what is CFM? Well, the fan airflow is measured in CFM or cubic feet per minute. This determines how much air the fan can circulate in one minute.

Generally speaking, the higher the CFM level, the better. However, static pressure can use less CFM more effectively when it comes to hardware obstacles. The ideal CFM for the

PC will vary from case to case, because many factors must be considered. Factors such as chassis size, design, CPU heat output, the type of CPU cooler you have, the GPU fan (either outdoor or blower type), and the number of chassis fans that can install. ventilator? Well, this is very basic: they move more air.

If you are not sure what size will fit your box, just check your box manual. You can also visit the manufacturer's website to verify the dimensions and specifications of your case. If all other methods fail, just take the tape measure and measure the fan inside the box.

The following are some of the more common fan sizes and the distance between their screw holes:

Fan speed is measured in RPM (revolutions per minute). The higher the RPM, the more air will enter the system. RPM has a direct effect on the noise level of the fan, because the faster it spins, the more noise it produces.

This can also affect the size of the fan you want. Although you can use a small fan quickly, it may be louder. Therefore, you can use a larger fan at a slower speed.

To get the correct RPM for your configuration, simply use third-party software such as SpeedFan to set the fan to full speed, and then reduce the speed by 25% until the fan is not too high and the temperature is acceptable.

Most fans currently use three basic types of bearings. They are as follows:

This type of bearing is the cheapest and is expected to last about 40,000 hours at 60°C (140°F). The

fan speed is designed for low maintenance and low operating noise. It is recommended to install this type of fans vertically, which is said to be quieter.

However, it should be noted that despite low operating noise, they tend to fail without warning. The

double ball bearing is more expensive than sleeve bearings, but has a longer service life; operates at 60 ° C (140 ° F) for up to 60,000 to 75,000 hours.

is different from slide bearings, they can be installed in any position, and the sound is louder. That is why it is not recommended for home use, but it is very suitable for server farms.

These are high quality bearings. They typically have the longest lifespan, with run times of 100,000 to 300,000 hours at 60 ° C (140 ° F).

and double ball bearings, can be installed in any position. They also have the lowest noise level of the three and are suitable for server and home use, although they are mostly used for home use because they are a bit expensive.

Fan noise is measured in decibels (dBA). Weighted decibels are one way that we can measure the volume of sound in the human ear. Almost all chassis fan manufacturers include the fan noise level. Some of the factors that cause

fan noise include:

Generally, its range is between 10dBA and 36dBA. In any case, for obvious reasons, you'll want a chassis fan with the least noise. The following is the relationship between the volume of these noises compared to everyday sounds: The

has three types of fan power connectors:

Operating the 3-pin connector at low voltage may cause problems or stop operating the fan . Therefore, when doing this, make sure you know exactly what you are doing. The

connector type will affect compatibility, so please check the motherboard connector type before purchasing. The

chassis fan can be customized to enhance the appearance of the PC through the color circle or RGB lighting. For fans, we tend to prioritize features because they help extend the life of the system.

When installing fans in your case, you need to choose whether each fan is an intake fan or an exhaust fan.

Ideally, you want to make sure that there is at least one intake and one exhaust, but don't worry too much about the ratio. Some terms to be familiar with


Obviously you need a neutral air pressure. A good way to do this correctly is to measure the total CFM of all intake fans and the CFM of all exhaust fans.

If the intake CFM is higher, a positive air pressure is obtained, and if the exhaust air is higher, a negative air pressure is obtained. The same amount of CFM means it has approximately neutral air pressure. Please note that if the fan is blocked, its maximum CFM cannot be compensated.

It is also worth noting that the fan placement may be difficult to put down. Therefore, it is best to pay attention to the dusty places. If you think it is causing a problem, you can adjust the fan position accordingly.

If you are not sure whether your fan is in or out, then the next section

Which case fan is best for your computer? You should review the following:

Understand your needs and wants. Assess your needs in advance and prioritize what your PC really needs. Are you having trouble in a specific area or are you looking for a suitable chassis fan to take precautions?

Be sure to check the type of connector on your PC. Before purchasing, be sure to check the available connectors on the motherboard to avoid compatibility issues.

measures the size. Check your case manual or website for the exact size and number of fans supported.

Will noise be a problem? If you need a quiet chassis fan, please consider choosing a fan with the least noise. On the other hand, if noise is not a problem, you may find that the noise is not so quiet, but it still works well at a lower cost.

How do you want to control your fan? If you want to dynamically control the fan speed through third-party software, please purchase a fan with a 4-pin connector. Otherwise, most ordinary users will do a good job with a 3-pin fan.

Maximum Noise Level (dB) and Rotation Speed (RPM)

24.6dB/1500 RPM


140mm/140×140 x 25mm

Air Flow (CFM)

82.5 CFM

Connector Type


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Maximum Noise Level (dBa) Rotation Speed (RPM):

24.8 dBA / 1500RPM


120mm / 120mm x 25mm

Cfm Airflow:

Cfm 449 49-pin Connector Type 414. 2.0

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Maximum Noise Level (dBA) and Speed (RPM)

17.7 dBA / 2200 RPM

Dimensions / Dimensions

80mm / 80x80x25mm

44pin 444pin

4 444pin 444 44pin

44pin from Amazon

Maximum Noise Level (dBA) and Speed (RPM)

19 dBA / 700 RPM

Dimensions / Dimensions

200mm / 200x200x30 mm

Air Flow (CFM)

44 44 44 44pin 44pin Connector Type 3 on Amazon

Maximum Noise Level (dBA) and Rotation Speed (RPM)

14dB / 1400 RPM


120mm/ 120x120x25mm

Air Flow (CFM)

44 CFM

Connector Type


Store AM Asson

Maximum Noise Level (dB) and Rotation Speed (RPM)

24.6 dBA / 1500 RPM

Size/ Dimensions

140mm / 140 x 140 x 25mm

Airflow (CFM)

82.5 CFM

Connector type

4-pin 4-pin Amazon



design opinion difference

In terms of beautifying the beauty of your gaming PC, there is nothing more than installing an RGB fan The simple way, or for that matter, how about three in one set? The Thermaltake Riing Quad 120mm fan is highly regarded as the best RGB fan on the market, mainly due to its vibrant 4-way lighting, reasonable airflow, and acoustic performance.

As the name suggests, these fans are 120mm long and 25mm deep. These PWM fans have a CfM of 40.9, which is one of the lowest on this list, but the maximum noise is 25 dBA. The fan bearing type is hydrodynamic and the addressable RGB is amazing.

In terms of purchase options, they are only available in triple packages on the 120mm and 140mm models. Thermaltake also offers a 200mm option as a single unit.

Whether you have a Thermaltake case or not, these Riing RGB fans will add a special touch to your body, and even equipped with a mini fan controller, making your life easier, a great fan.

Maximum Noise Level (dBa) Rotation Speed (RPM):

24.8 dBA / 1500RPM


120mm / 120mm x 25mm

Airflow Cfm:


444Pin 4Pin 4Pin 4Pin on Amazon


high quality

Quad RGB

and ALEXA and Razer Chroma used together



In terms of repairing the aesthetics of gaming PCs, there is no simpler way than installing a fan RGB, or for that matter, how about a three-piece suit? The Thermaltake Riing Quad 120mm fan is highly regarded as the best RGB fan on the market, mainly due to its vibrant 4-way lighting, reasonable airflow and acoustic performance.

can be seen from the name, these fans are 120mm, depth 25mm. These PWM fans have a CfM of 40.9, which is one of the lowest on this list, but their maximum noise is 25 dBA. The fan bearing type is hydrodynamic, and the addressable RGB is amazing.

As far as purchase options are concerned, they are only available in triple packages of 120 mm and 140 mm models. Thermaltake also offers a 200mm option as a single unit.

Whether you have a Thermaltake case or not, these Riing RGB fans will add a special touch to your build, and even equipped with a mini fan controller to make your life easier, a great fan.

Maximum Noise Level (dBA) and Speed (RPM)

17.7 dBA / 2200 RPM

Dimensions / Dimensions

80mm / 80x80x25mm

Air Flow (CFM)


444C 444C Connector


C Connector


CFM high, but low speed

4-pin connector for manual control

is very quiet; equipped with low noise (LNA) adapter

static fan


is not recommended for larger cases

Noctua is the name of a cooling solution you can trust. With Noctua NFA8 80mm chassis fan, you can get the best performance in the 80mm category.

NFA8 uses sophisticated aerodynamic design measures and Advanced Acoustic Optimization (AAO) to keep the noise level as low as possible. In fact, its maximum speed is 2200 RPM (using a 4-pin connector

Keep your system cool all day. Also, you don't even need to increase the RPM above 1000 to achieve this goal, because it can even go up to 700 RPM. Although the

is the largest fan on our list, it is still fairly quiet (19 dBA), almost as quiet as the Noctua NFA8 (17.7 dBA). Unfortunately, the color themes are quite limited, they are only available in black, red and blue versions. Furthermore, Cooler Master uses environmentally friendly materials when manufacturing this fan, which means it is fully ROHS compliant.

Maximum Noise Level (dBA) and Speed (RPM)

14 dBA / 1400 RPM

Dimensions / Dimensions

120mm / 120x120x25mm

Air Flow (CFM)

44 44 in Amazon Type 44 CFM



is very quiet; it almost does not exist

The same excellent radiator fan


is only available in black (no LED)

Cooler Master Silencio FP 120 PWM is indeed worthy of the name: Silencio. At first, you would mistake the

for a standard 120mm fan, but if you look closely, this black box fan has a very different sickle-shaped blade. This is what makes the fan run quietly under high pressure. In addition to the use of dynamic toroidal bearings (LDB), the

also uses Silent Driver IC technology, which provides smoother rotation and less torque boost, thereby minimizing vibration and ultra-low noise.

Although you can manually control the fan through third-party software such as SpeedFan (thanks to the 4-pin connector), you don’t have to do this to keep the noise level low. Other factors that make this fan quiet are the 4 metal screws and the 4 accompanying anti-vibration rubber screws. A great silent choice!

This is the best PC case fan built for your PC. We have made sure to include a variety of different options to meet a variety of consumer needs. Each fan is tested and proven with a variety of different chassis options to ensure we recommend the best chassis fan.

If you need a 140mm fan that not only guarantees performance, but is also quiet, the Noctua NFA14 is unrivaled. This easily becomes one of the best PC case fans on the market.

In the 120mm range, the Thermaltake Riing Quad Fan Pack is an RGB option that looks great on any tempered glass case. It is a high-performance fan with a relatively low noise level, which can greatly enhance the beauty of its structure.

If your case requires an 80mm fan, we personally recommend the Noctua NFA8 PWM-Thermaltake Core V1 case fan. Provides a staggering amount of CFM without being too loud. But remember, there is no RGB and all of these.

If you need a large fan to keep you cool, the Cooler Master MegaFlow 200 with a high CFM and extremely low noise level is hard to match.

If you really want a truly quiet case fan, Cooler Master cm Silencio FP 120 PWM is one of the quietest fans out there.

Now that you know how to choose a case fan to suit your needs, and you know some of the best case fans available in 2021, which fan are you interested in?

Why don't you leave us a message in the next section and any questions you may have for fans of the case? Even better, why not head to our community center, where you can discuss everything about PC case fans with like-minded people.

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