120mm vs 140mm Fans

Want to buy a fan for your pc but not sure which one to invest in? Well, then you have landed on the right webpage! The comparison between 120mm vs 140mm fans is prevalent when building a pc setup. People want to know what’s better for their personal computers, and these questions often lead to wild comparisons between things.

Case cooling fans are essential for PC setup, especially those who mainly rely on laptops and computers. Prolonged PC use can lead to intense heating that is quite uncomfortable and dangerous to the computer.

Many other case fans are available in markets, each with different prices, noise levels, and fan speed. The question is, how will you know which ones are the best for your computer?

Rest assured! This post will compare 120mm vs 140mm fans to determine which one is the best for your needs!

What are 120mm fans?

120mm fans are the most frequently distributed in the market. The reason is their small size. Many laptops and computers are built with small size fans up to this day. 120mm fans function well for cooling the inside of the laptops. It lacks a few cooling options, but it is the best option for a standard-size PC.

What are 140 mm fans?

Every day, many individuals choose 140mm fans over 120mm because of their larger size. Many professionals and gamers usually prefer it. The reason for their preference is because some users operate heavy applications that can heat the PC quickly. So by using

more giant fans, this thing could be avoided. However, these fans must be used in full cases; otherwise, they will also occupy the space of other fans.

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120 mm Vs 140 mm Fans: Side By Side Comparison

Now that we know the main difference between the two particular types of fans Let’s start the in-depth analysis of 120mm vs 140 mm fans.

The airflow comparison:

Choosing a fan with higher airflow (total amount of air exerted by a case fan) is crucial to avoid overheating. The airflow is measured in CFM, which stands for cubic feet per minute. The higher the fan’s CFM, the higher will be the air delivered to the PC.

120mm Fans Airflow140mm Fans Airflow
The 120 mm fans have a low CFM rating, but that doesn’t make it completely useless. As mentioned earlier, it works just fine for cooling the small laptops and computers, so that doesn’t make them a complete loser. Also, one good advantage of having a low airflow rating is adequate static pressure.140mm fans have higher CFM, making them a better option for keeping the CPU temperature down during heavy workloads or overclocking.

Here 140 mm fans are winners because of their higher CFM and airflow.

Spin speed:

It is yet another essential aspect of a case cooling fan. Measured in RPM (Rotation Per Minute) shows how fast a fan can spin to dissipate heat.

There are notable differences regarding spinning speed between 120mm vs 140mm fans.

120mm Fan Spin Speed 140mm Fan Spin Speed
When the spin speed of 120mm fans was tested, it came out to be 1200 RPM, an excellent spinning speed. With 1200 RPM, it can dissipate the larger amount of heat produced from your PC, cooling it and making it work more efficiently. This spinning speed also creates positive pressure, which keeps the dust particles and debris as far as possible. Not every time 140mm case fans can beat 120 mm fans. The 120 mm fans have a higher spin speed than 140 mm, which is 1000 RPM. However, a fan with a spin speed of 800RPM is considered efficient, but still, it is better to make sure your fan is spinning faster.

The 120 mm fans are the champ here because they can dissipate large amounts of heat in contrast with 140mm fans.

Noise level:

Imagine sitting in a room where the only irritating sound is the one your fan is making. Noise management is an essential aspect your case fans should have. So 120mm vs 140mm, who has the lower noise level (dB)? The answer is below.

120mm noise levels 140mm noise levels
120mm fans exhibit meager dB ratings. The reason for this is their smooth-spinning that inhibits their lesser sound pressure delivery. It doesn’t matter if the workload is light or heavy; you will receive the same results in both scenarios. The noise levels in the 140 mm fans are a little bit higher than the 120 mm fans. But you can find 140 mm fans with lower dB ratings in the market as well.

Here, the 120 mm fans are dominant over 140mm fans when it comes to noise levels. Although 140mm fans do not exert very harsh or rough sounds like you are expecting. Still, 120 mm fans won the medal here.

Costs comparison:

The two fans differ slightly in terms of their cost. Now let’s find out who is the budget-friendly fan we have here.

120mm Fans Prices 140mm Fans Prices
It is quite a surprise that 120 mm fans cost a little more as compared to their features. The market price for it is under $10 to $30.Considering the size and features 140mm fans possess, its price is justified. In markets, it costs under $10 to $35, which is quite similar to the 120mm fans.

And the winner is …. The 140mm fans. They do cost a little higher, but they also come in large sizes, and they are best for heavy workloads. But if you need a small and affordable fan to cool your PC, 120mm fans are the way to go.

Final Takeaway on 120mm Vs 1400mm Fans Battle:

Overheating can cause considerable damage to personal computers. Most computer and laptop users are becoming more and more possessive of what’s good and bad for their laptops and computers. We hope this article was helpful enough for you to choose which fan is excellent.

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