How To Measure A Case Fan – 3 Essential Tips To Know Before You Buy

by John Sanderson
how to measure a case fan

If you’re building a high-performance computer, or are simply planning on upgrading your current system, then case fans should be on your list of essential components. Case fans help keep your computer cool and prevent overheating by increasing airflow. They also help reduce dust build-up and extend the life of your computer by keeping it clean. There are several factors to consider when purchasing case fans. Whether you’re looking for a quiet, high airflow, or static pressure fans, there is a model that will meet your needs. There are a number of case fan manufacturers out there but not all of them offer high-quality products. To help you choose the right case fan for your specific needs, here are some tips on how to measure a case fan and what to look for when buying one.

How To Measure A Case Fan

  • The first thing to look at is the size of the fan. The size of the case fan will be determined by the number and size of your current fans and how much air you need to move. The greater the airflow you require, the larger fan you should get.
  • The next thing to look at is the diameter of the fan. The larger the fan, the more air it will move. The only exception is if you are using a smaller case than your current fans allow for. In that case, your existing fans can handle more air than they normally would.
  • The third thing to look at is the noise level of your case fans. This will vary depending on how much airflow you require and how big or small your case is. Larger fans are louder but also move more air and produce less noise when compared to smaller ones.
  • The fourth thing to look at is the static pressure of the case fan. This will determine how much air the fan moves and how effectively it cools your system. The higher the static pressure, the more air that can be moved, and thus, the cooler your computer will run.
  • The fifth thing to look at is the noise level of your case fans. This will vary depending on how much airflow you require and how big or small your case is. Larger fans are louder but also move more air and produce less noise when compared to smaller ones.
  • The sixth thing to look at is if you plan on using two or more case fans in a series. If this is what you plan on doing, then make sure they are compatible with each other before making a purchase decision as some models do not have a second set of wire connections available for them to be used in this manner (if they do, however, check that they are compatible before purchasing).
  • The seventh thing to look at is the size of the fan and its power. The larger the fan, the more power it will need to move air.
  • The eighth thing to look at is if you plan on using a third-party fan controller or just leave your case fans running all the time (i.e., in an active mode). Fans that are in an active mode need to be able to handle a greater amount of air and thus, are usually larger than fans that are not used all of the time (i.e., passive mode).

What Is Static Pressure?

  1. Static pressure is the amount of air that is pushed into the case by a fan.
  2. It is measured in CFM or Cubic Feet per Minute. This is the type of measurement that you will see on most fans.
  3. The higher the static pressure, the more airflow you’ll get from your fan and the quieter it will be.
  4. The higher the static pressure, the more noise it will make.

Determining Airflow Requirements

Fan Speed

Measure the RPM of the fan on your computer. This will give you an idea of how much airflow you need. If you are looking for a high-performance computer, then you might want to consider a fan with a higher RPM (RPM is the rotations per minute). If there are no manufacturer’s specifications listed on the box, then assume that it has a minimum RPM of 700. 

Case Type

Case fans come in two basic types – case fans that mount directly to your motherboard and case fans that mount to your case. The former is referred to as “intake” fans and direct airflow into your computer’s internal parts and the latter is called “exhaust” fans and exhaust air from the inside of your case. It is important to note that all computer cases have dust filters which will not allow any air from coming in from outside or through their dust filters if they are installed inside your case. Therefore, if you want to use an intake fan, you will have to remove the dust filter from your case.

Airflow

To determine the amount of airflow required for your computer, measure the volume of air that is being drawn into your computer through the front and back side vents. This measurement should be taken in a sealed room with no obstructions such as furniture or cabinets blocking the flow of air into or out of your computer. (To see how to measure airflow in a room, click here .)

Static Pressure

Static pressure is measured in inches of water (inches H2O) and is a measure of how much force is pushing against an object. It can also be measured in millimeters (mmH2O) and is also known as static pressure. If you are looking for a high-performance computer, then you might want to consider a fan with higher static pressure. You can find this information on the box or on the product website or specification sheet provided by the manufacturer.

Noise

The noise level of a computer case fan is also important. If you are looking for a quiet computer, then you should consider a fan with a lower noise level. You can find this information on the box or on the product website or specification sheet provided by the manufacturer.

Fan Speed Controller

Some fans come with speed controllers that allow you to control the speed of the fan via a remote control, motherboard interface, or wireless remote control system so that you don’t have to manually adjust it every time you turn your computer on.

Warranty

Check to see if your product comes with warranty information and what is covered by the warranty. Also, check if there are any special terms and conditions as some products come with special terms and conditions such as extended warranty and free shipping, etc.

What is RPM?

  • RPM stands for Revolutions Per Minute and is measured in revolutions per second. It is the number of times a fan spins within a unit of time. For example, a fan with a speed of 1000 RPMs means it will spin once every second. The higher the RPM, the faster the fan spins.
  • The measurement of RPM is not always an accurate way to determine how fast a fan spins. Fans with light motors tend to have lower RPMs than heavier motors, making them appear faster than they are. More importantly, fans with higher RPMs can produce more noise than those with lower RPMs because they spin faster and at a higher speed. 
  • The term “RPM” is also used for measuring output speed in many different systems such as car engines and computers. For that reason, you should avoid using this term when describing fans unless you’re sure everyone understands what you mean by it! 

Conclusion

When it comes to choosing the right case fan for your computer, you want to make sure it fits the necessary specifications. You can use these tips to make sure you select the right model for your needs. If you’re building a computer that requires lots of airflows, then you’ll want to make sure you have enough case fans installed to push all that air. These tips can help you choose the right case fan for your specific needs.

FAQ’s

Can I use a CPU cooler fan on the front of my computer?

No! While it is possible to use a CPU cooler fan on the front of your computer, in most cases you would be better off using an aftermarket CPU cooler. You will get better airflow through your case and more powerful cooling too.

Do I need a case fan if my computer is just running?

Yes! Even if you don’t have a video card or an operating system installed on your computer, you still need to install fans to ensure adequate airflow through your PC. The fans are needed to move the hot air out of the computer and exhaust it into the case so that fresh air can flow in from outside. Without adequate airflow, your components will overheat and damage themselves.

Can I install a second case fan on top of my first fan?

You can install a second case fan on top of your first one. This will allow you to create a push-pull configuration. If you do this, make sure you connect the two fans together so that they are at the same speed. This will maximize the amount of airflow your computer gets and keep it cool.

How much airflow should my computer get?

Your computer should get at least 25 CFM of airflow if it is running in an open environment. If your computer is located in an enclosed space such as a home office or server room, then something closer to 90 CFM is recommended for optimal performance. You should also consider installing more than one case fan if you have more than one component that needs cooling. The more fans you have installed, the more air your system will be able to move through it and keep everything running smoothly.