The airflow of computer fans is measured in Cubic Feet per Minute (CFM). It is defined as the volume of the air (in cubic feet) moved by the fan in one minute. Noctua NF P-12 redux-1700 PWM Fan Specifications Fan Size 120mm Fan Speed 450 – 1700 RPM Airflow 70.74 CFM Static Pressure 2.83 mm H2O Click to see full answer. Similarly one may ask, is it better to have a higher CFM?Larger fans can move more air with less noise. Depends on the application. Higher static pressure more suited to CPU coolers or radiators with dense fins. For cases fans higher CFM is better and as already said a larger slower rotating fans will have good CFM at a lower noise level (as a rule).Likewise, what is a high CFM fan? CFM stands for cubic feet per minute (it is also referred to as airflow). Put simply, CFM is how much air a fan moves. The number depends on a few things: the fan’s motor, the blade pitch and the length and/or shape of the fan blades. But the important part is this: The greater the CFM, the more air a fan will move. Then, what makes a good case fan? The higher, the better the cooling, in theory. Static Pressure = the amount of CFM that penetrates heatsinks or radiator fins. The higher the better performance for heatsinks. Size = Thicker fans tend to have better static pressure.Are 120mm or 140mm fans better?Distinguished. its a matter of math the smaller 120mm fan has a high CFM because it pushes air through a small area fast. Since the area is small and focused, you feel it more. The larger 140mm fan pushes overall more air through, but it is spread out over a larger area and thus “feels” like there is less air.
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