If you wonder how Cooler Master achieved big airflow with low noise levels, answer is simple: fans with large radius and low RPM. Of course Cooler Master didn’t re-invent hot water but this is not the only reason that makes this case unique and special. Cooler Master HAF 932 has 3 of those big fans. First one can be found on front side behind front mask: it has 220mm in radius and it is lighted in red when chassis is powered on. Job of this fan is to bring fresh air into chassis. This fan operates at 700 RPM and 19dBA noise level. Besides silence that this fan “generates” it has another role - cooling of hard disk cage that is rotated and mounted behind front chassis side. Fan has 9 fins and airflow can be increased if bottom segment of front mask is taken off. There is no air filter on this fan but if you are too lazy to clean your chassis interior than you can improvise something, but however absence of air filter on front fan is strange decision from Cooler Master.

On the right side of chassis is located another 220mm fan with same characteristics except it is not lighted at all. This fan also lacks air filter but there is protective grill. This fan also injects fresh air into chassis interior, and as results showed, this fan had major impact of cooling performances of this chassis. Third fan is positioned on top side of this case, and as expected, it blows out hot air from inside of chassis to surroundings. To achieve maximal airflow in HAF 932, Cooler Master mounted one 140mm fan at back side of chassis that has same role as 220mm fan at top side. This 140mm fan operates at 1200RPM and 17dBA noise levels. When all fans are powered on, HAF 932 remains very silent.