![]() Winner: 140mm fans, but 120mm fans still offer great coolingĪnother thing to think about is the static pressure rating the fan gets.In general, 120mm fans will have more RPM than 140mm fans. RPM stands for rounds per minute, which is how many times the fan will spin around per minute. The design of the blade, the material used, and the RPM all impact cooling as well. Now, the length of the blade isn’t the only thing you need to think about for cooling. Most 140mm fans have longer blades and therefore have a higher CFM rating. It is one of the most important specs to look for when you compare fans. To determine whether or not a fan will adequately cool a system, we need to look at the CFM and the RPM.ĬFM stands for cubic feet per minute, which is the air that a fan can move per minute. The main point of any fan is to provide cooling to the entire system. These are the most important things to consider when comparing 120mm and 140mm fans. The main difference between 120mm and 140mm Fans is, 140mm fans show better performance, cooling and airflow, while 120mm is lighter. While this won’t matter in the long run, it can impact the type of bearing you use. Vertically mounted fans are the most common option, but many newer cases and those designed for gaming allow for horizontal mounting. You will also need to think about whether you will be mounting the fan vertically or horizontally. ![]() Your case should come with a guide that recommends the right size for you, or you can measure the size of the fan from the mounting holes. However, some cases can take up to 200mm, and some can fit only 40mm. Most modern cases use 80mm, 120mm, or 140mm fans. The first thing you should think about when buying a fan for your build is your case size. Some 140mm fans have a lot of extra lighting, which makes them bigger and heavier. The average 140mm fan dimensions are 140mm x 140mm x 25mm, though there are some fans that differ ever so slightly, especially if they have extra RGB lighting. These types of fans should only be used in full cases because they are large and have been known to encroach on the space reserved for other fans. While it doesn’t matter as much with 120mm fans, you should pay attention to this rating as they seem to be all over the place. There is a lot of talk about 140mm static pressure fans and the ratings they get. The 140mm computer fan is popular amongst gamers and professionals who use heavy applications, such as architects and editors. More and more people are flocking to get 140mm fans, even though they are larger. The average 120mm fan dimensions are 120mm x 120mm x 25mm, though some fans differ ever so slightly, especially if they have extra RGB lighting. This is because a 120mm intake fan can be used to cool the inside of cases for regular computer usage, and a powerful 120mm fan is enough for many gamers.Ī 120mm mounting has a smaller overall size than most other fans, making it better for low-profile cases and builds where other parts are smaller, though it lacks some cooling options. Many bigger size fans have come out, but this is the size used in most laptop and computer builds even today. Historically, 120mm fans are the most widely available fans on the market.
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