Case fans move air through a computer case: they draw in cool air and push hot air out. Our range has over 130 models from brands such as Delock, Thermaltake, NZXT, Inter-Tech and Fractal Design.
They suit anyone building a new PC, replacing a noisy fan or adding airflow to a case that runs too hot.
How to choose a case fan
Size. The most common sizes are 120 mm and 140 mm, with 80 mm and 92 mm turning up in smaller cases. Check how many fan mounts your case has and what size each one takes. A larger fan usually moves the same amount of air at lower speed, so it tends to be quieter.
Airflow and pressure. High-airflow (CFM) fans work best on an open case front or rear. Where a fan sits behind a radiator or a dense dust filter, static pressure matters more. Manufacturers list both figures in the specification.
Noise. Look at the noise level (dBA) and the maximum speed in rpm. Quiet models often use fluid dynamic or magnetic bearings, which tend to stay quiet longer than basic sleeve bearings.
Connector and speed control. A 3-pin fan has its speed adjusted by voltage, while a 4-pin (PWM) fan gives the motherboard finer and wider control. Count the fan headers on your board, and if there are too few, you will need a splitter.
Lighting. Addressable ARGB lighting connects to a 5 V, 3-pin header, while plain RGB uses a 12 V, 4-pin header. The two standards are not compatible, so check which one your motherboard has first.
Brands we carry
- Delock: known for cables, adapters and other IT accessories; it has the most fans in our range.
- Thermaltake: a maker of cooling products and cases that also offers fans with RGB lighting.
- NZXT: known for cases and liquid CPU coolers with a restrained look.
- Fractal Design: a Swedish brand known for quiet cases and quiet-running fans.
- Corsair: known for RGB fans that can be controlled from a single piece of software.
- Lian Li: known for aluminium cases and fans that connect to one another to cut down on cable clutter.
- be quiet!: a German brand focused on quiet cooling.
Also in our range: Inter-Tech, Xilence, MSI, ASUS, GAMDIAS.
Frequently asked questions
How many fans does a PC case need?
Two or three are usually enough: one or two at the front to draw air in and one at the rear to push it out. If the PC has a powerful graphics card or many drives, a fan at the top helps. The key is that air enters and leaves through different sides of the case.
Which way does a case fan blow?
Most fans have an arrow on the frame showing the direction of airflow. Mount front fans so that air flows into the case, and rear and top fans so that air flows out.
What is the difference between a 3-pin and a 4-pin fan?
A 4-pin fan has a separate PWM signal wire, so the motherboard can change its speed smoothly. A 3-pin fan is controlled by voltage, which usually gives a narrower range of speeds. Both types plug into the same 4-pin header.
Should I choose a 120 mm or a 140 mm fan?
Your case decides this, because the fan has to fit the mount. If the case accepts both, a 140 mm fan usually moves more air at lower speed and runs more quietly. There is generally a larger choice of 120 mm models.
