If you compare the absolute values with those of the reference, the NZXT F120 consistently cuts a good figure. At full revs, it is a tad louder, but at the same revs, it is then significantly quieter in some cases. For this very reason, we added a very complex measurement in 5-cfm steps at the end, which shows the sound pressure level as a curve over the entire speed range in relation to the volume flow. And the fan can score very well there as well.
Sound comparison (recording) at 100% 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 NZXT F120 produces a bit more motor noise, whereas already the reference fan others can be called loud.
NZXT F120
Be Quiet! Light Wings 120 mm HS
Sound comparison (recording) at 1000 rpm
Subjectively, the soundstage is almost the same, you can really leave it like that. Only in open mode is the Sharkoon Silent Storm 120 mm a bit louder at 1000 rpm, since it works closer to its upper speed limit. However, if you mount it on a radiator, it even gets quieter than the reference (graphics above).
NZXT F120
Be Quiet! Light Wings 120 mm HS
Total speed range (500 to 1500 rpm)
Before I will explain the frequency analysis of the recorded spectrum to you, there is already the dreaded “station search”, where we will play through the fan operation from the lowest to the highest speed. And please don’t be alarmed, we have amplified the whole thing a bit so you can hear it better. So don’t set your listening level too high, though – this time it’s not particularly extreme.
Nevertheless, we hear slight humming between 800 and 900 rpm in about the middle:
If the speakers have survived the whole thing up to this point, we’ll now go into more detail.
Frequency spectrum in the housing
Let’s look at the frequency analyses of all measurements and all three tested speeds. The graphs speak for themselves, as you can also see a small lower-frequency peak of the engine at full speed quite clearly:
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