[SOLVED] Case Fan and airflow

[Chkontog]

Hi,
the most valuable spec about a case fan(except the noise), is the size of the air flow?

 

[Aeacus]

Not necessarily. E.g if you have water cooling with rad or custom filters on case with considerable restrictions in airflow path, you'd want high static pressure fan on there rather than high airflow fan.

For fans, all the following is important:
Size (80/120/140/200mm)
Airflow (CFM)
Static pressure (mmH2O)
RPM range (e.g 400 - 2000 RPM)
Fan bearing (sleeve, ball, fluid-dynamic, mag-lev)

 

[feelinfroggy777]

Hi,
the most valuable spec about a case fan(except the noise), is the size of the air flow?

It depends on what you are using the fan for. If it will be next to a heat sink or radiator, a static pressure fan (typically wide blades) tent to work better. But for fans that just need to push higher volumes of air (typically narrow blades), look for higher air flow.

Some fans provide both, such as the Corsair ML fans, but they are expense.

Ultimately, is the major driver for the fan and that is determined by size, RPM, and bearing.