120mm vs 140mm Case Fans: The Updated Battle Result

Ever puzzled over what fan size to get for your PC? Many people do. Case fans can make a huge difference in cooling and quietness! Here’s how 140mm and 120mm stack up. Let’s sort out which to choose, so you make the right call.

Case fans are a must when it comes to proper PC cooling. Whether it’s a new PC or an upgrade, the right fan size matters.

120mm and 140mm are two common fan sizes. What’s the difference? Let’s find out!

This article will compare 120mm vs. 140mm fans and show you which one suits your cooling needs.

Benefits of 120mm Fans

120mm fans have larger blades than most other sizes. This means they provide more airflow and move more air per revolution. They are perfect for cases with limited space, yet still offer good performance. Moreover, they have slower rotor speeds, making them quieter. Ideal for office applications or areas where noise is an issue.

Furthermore, most 120mm fan models are small, giving you plenty of options from different manufacturers, different designs, colors, and materials. Also, the range of sizes makes them easy to install in tight spaces while still providing good cooling power.

Benefits of 140mm Fans

140mm computer case fans are gaining fame. PC lovers and normal users like them. Advantages over 120mm size come with them. More airflow and quiet running are the most obvious ones.

The larger 140mm fans can blow 45% more air than the smaller ones. At the same revolutions per minute (RPM). This is great for gaming PCs or systems with multiple hard drives. They help vital components to stay cool and functioning.

140mm fans have more blades than 120mm fans. So they spin smoother, with less vibration. This leads to quieter operation. You can focus on your gaming or work without noise from the cooling part. The longer blades also help get rid of dust, reducing maintenance.

Factors to Consider When Choosing Between 120mm and 140mm Fans

Choosing between 120mm and 140mm fans is a tough decision. Most PCs use either 120mm or 140mm fans. Generally, 120mm fans have 7 blades, spin slower, and make less noise than 140mm fans. But 140mm fans have 9 blades, spin faster, and can produce more airflow with less noise.

Noise isn’t the only factor. Air pressure is important too. In some cases, a 120mm fan can move more air than a 140mm fan due to its stronger static pressure capabilities. It all depends on how many devices you need to cool and where they are located.

In conclusion, there is no one size fits. You need to look at factors such as noise, airflow, static pressure, and cooling performance. Then decide what suits your needs best.

Factors to Consider When Choosing a Fan Size

Deciding between 120mm and 140mm PC case fans can be tough. Each size has its own benefits, so it’s essential to weigh all factors before making a decision. There are significant differences between the two sizes that must be taken into account. 140mm models are bigger, and have better performance, but may not fit in certain cases.

Size is an important factor to consider. Both sizes supply adequate cooling, yet 140mm fans have a larger frame and higher airflow due to their larger surface area. However, they need more clearance to fit.

Noise levels are another factor. 140mm fans produce more noise, as they move more air. If you don’t mind extra sound, 140mm can offer superior air movement without too much noise.

Design is also an important factor. Each fan size has its own look and style. Some cases look better with one size over another. So, do your research before deciding which fan size is best for your system’s aesthetic and design goal. Consider all these factors to get optimal performance and a great-looking case!

Tips for Installing 120mm and 140mm Fans

Selecting the right fan size can be hard, but with the right knowledge, you can decide wisely. Before choosing a 120mm or 140mm fan, here are some tips:

  1. Consider the size of the room when picking the fan size. Generally, larger fans can move more air and make less noise than smaller ones.
  2. If the airflow is the main priority, a 140mm fan is the better choice. It can move more air through the case at lower RPMs than a 120mm fan.

Pros and Cons of 120mm vs 140mm Fans

120mm and 140mm fans are two kinds of computer case fans. Both have ups and downs, so you need to think about it before choosing.

Pros of 120mm Fans:

  • Cheaper than 140mm fans
  • Lots of colors available
  • Fits most computer cases
  • Usually quiet
  • Less surface area; good in tight spots, like radiators or heatsinks

Cons of 120mm Fans:

  • Not as pretty as 140mm fans
  • 140mm fans may be better for airflow, but cost more

Pros of 140m Fans:

  • Bigger size means better airflow
  • Better pressure capacity; great for radiators or heatsinks
  • The larger size looks nice in PC cases with glass side panels

Cons of 140m Fans:

  • Costlier than 120 mm models
  • Louder than 120 mm models


To sum up, selecting the optimal computer case fan is dependent on size, noise, cost, and energy efficiency. Generally speaking, 120mm fans are more affordable and more cost-effective than 140mm ones. Plus, 140mm fans can push more air with less sound. So, it’s all down to personal preferences!

Keep in mind, whatever type you opt for, buy a high-quality item for your computer cooling system to work properly and efficiently.

Sayan Dutta
Sayan Dutta

I am glad you came over here. So, you want to know a little bit about me. I am a passionate digital marketer, blogger, and engineer. I have knowledge & experience in search engine optimization, digital analytics, google algorithms, and many other things.

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