How do I know what size case fan I need?
The size of fan you need will generally be determined by the size of the fan fitting position in your PC case. The sizes of all the fans on our website are shown as measured along any one of the fan’s four sides, NOT the distance between the fan’s screw holes! Our most popular fan size is 120mm, followed by 80mm.
What size are case fans?
120mm
Most popular size is usually 120mm in modern PC cases, however, you will find other sizes such as 80mm, 92mm, 140mm, 200mm and various other configurations.
What are the sizes of computer fans?
Let’s get to know the different computer case fan sizes:
- 80mm (3.1 Inches) The fans of 80mm are conventional models that are being widely used for a decade for cooling the components.
- 92mm (3.6 Inches)
- 120mm (4.7 Inches)
- 140mm (5.5 Inches)
- 180mm (7 Inches)
- 200mm (7.9 Inches)
Are Case fan sizes universal?
The mounting hole positions for 80mm, 92mm, and 120mm fans are standardized, so they’re mostly interchangeable (except for some Delta fans that are 38mm thick instead of 25mm, so they might not always fit in that dimension; also, they’re louder than most vacuum cleaners).
How do I choose a case fan?
Generally, you want the case fans in front of the case drawing in air while the fans at the rear blow air out. If your case has vents at the top, they should be placed as exhaust fans because hot air will rise. Side-mounted fans should be used for intake, though they often don’t have air filters.
How are fan sizes measured?
Ceiling fans are measured by the full size of their blade span (also called blade sweep), which is the diameter of the circle that you see when the fan blades are in motion. Or, in other words, fan blade span reaches from the tip of one fan blade to the tip of the blade directly across.
What are the different types of case fans?
There are actually two different kinds of PC case fans: static pressure fans, and high airflow fans.
How do I know what size axial fan I need?
Measure the length of one blade from tip to base. Be sure to measure from just above the blade root, as shown, OR from where the blade meets the hub in an assembled fan. Multiply the blade length by two and add that measurement to the hub diameter from step 3 to determine your total fan diameter.
Can you have too many case fans?
Two fans are usually enough. Two more may see a max 2-3 degree drop in temperature. Benefit of any more fans is usually negligible. Keep in mind the GPU/CPU have their own fans which benefit from a well-designed airflow from the case fans.
