If you compare the absolute values with those of the reference from Be Quiet!, you will hear ab bit less less of the operating noise, especially from thicker radiators. Yes, the fan performs quite well. Pressure creates counterpressure, also at the ears. Humming does not exist, which is good.
We have attached all fans already tested with the more detailed method in the gallery for a better comparison. The Mobius 120 is the first fan, the Mobius 120P ARGB is the second fan in the gallery, and then the rest follow.
Sound comparison (recording) at all speeds
As just mentioned, the subjective sensation is a somewhat clearer noise from the motor and the rotor blades, which is of course also due to the different speeds. The ARGB fan produces significantly more motor noise, and the tearing noise at the rotor blade edges is also audible. Since there are two fans, I’ll separate the whole thing into two separate blocks for once.
Cooler Master Mobius 120
Case fan
25 mm radiator
45 mm radiator
60 mm radiator
Cooler Master Mobius 120P ARGB
Case fan
25 mm radiator
45 mm radiator
60 mm radiator
If the speakers have survived the whole thing up to this point, we’ll now go into more detail.
Frequency spectrum
Let’s look at the frequency analyses of all measurements and all three tested speeds. The graphs speak for themselves, as there are hardly any disturbing peaks that lie outside the expected speed ranges for bearings and rotor blades. But here I show the respective fans below each other in a block.
500 rpm
1000 rpm
Maximum speed
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