Computer Case Fans

Computer Case Fans

Computer case fans keep your PC components cool, preventing any damage caused by overheating. If you are building a PC or your current fan is broken, there are plenty of fans to choose from to fit your case.

Choosing the right fan

Computer case fans can be used as an air intake, exhaust fan or to cool the power supply. Whereas a CPU fan is mounted on the component itself, a case fan is fixed to the actual case. A good case fan will keep your computer from overheating and will make your system more stable.

Most fans measure between 70mm and 140mm in size. However, larger fans of 230mm are also gaining popularity. Check your PCs documentation for its hardware specification in order to ascertain which size fan will fit your case.

Airflow vs. Noise

A fan has two desirable attributes high air flow generation and low noise. Airflow is measured in cubic feet per metre (abbreviated as CFM) and the speed of the fan is measured in revolutions per minute (RPM). If the RPM is high, then the fan is spinning fast and increasing airflow, but with the side effect being that the noise from the fan is also high too. However, larger fans get round this problem as their size means they can move a lot of air at low speeds and make little noise.

When youre looking to buy a new fan, check for its RPM and CFM. The noise of a fan is measured by decibel level (DBA), so keep an eye out for that too if low noise is an important requirement for your PC.

Power Draw

Another attribute of a fan is its power draw. This is the amount of power it draws from the power supply to make the fan work. This is measured in Amps (A).


Case fans usually connect to the motherboard via 3 or 4 pin Molex connectors. This provides the power to the fan to make it spin. Some cases have 4 pin connectors which enable the motherboard to control the speed of the fan. Check to which connector will fit your motherboard before buying.

Top Products in Computer Case Fans

  • Corsair Co 9050044 ww Ml Series Ml140 140 Mm Low Noise High Pressure Premium Fan
  • Corsair Co 9050039 ww Ml Series Ml120 120 Mm Low Noise High Pressure Premium Fan
  • Corsair Ml120 Pro RGB 120mm Magnetic Levitation Fan With Lighting Node 3 Fans
  • Corsair Ml140 Pro RGB 140mm Magnetic Levitation Fan With Lighting Node 2 Fans
  • Corsair Ll140 RGB LED 14cm PWM PC Case Fan Light Loop Hydraulic (pack of 2)
  • Corsair Hd140 RGB 140mm LED 2 Fan Kit With Lighting Controller 9 Blade PWM
  • Corsair Ml120 Pro 12cm PWM RGB Case Fan Magnetic Levitation Bearing
  • Corsair Ml140 Pro 14cm PWM RGB Case Fan Magnetic Levitation Bearing
  • Corsair Ml140 Pro 140mm Premium Magnetic Levitation RGB LED Fan
  • Corsair Fan Ll140 RGB LED PWM Single Pack
  • Arctic F12 120mm PWM PST Fan