Volume flow vs. sound pressure level
Now let’s just compare the two curves. Up to about 40 cfm and later again from 56 cfm, the be quiet! Light Wings in relation to the Lian Li Unifan SL-INF120 the in places significantly quieter fan in the case without the influence of radiators. Especially in the lower rpm band below 1100 rpm and less, you can hear the Lian Li Unifan SL-INF120 more clearly out of the system. This is put into perspective again in the mid-range, but it at least has to be mentioned. However, neither of them is very loud. However, I do not want to leave unmentioned that exact speeds are very difficult to hit with the rather coarse PWM control.
If you install the Lian Li Unifan SL-INF120, you should also pay attention to structure-borne noise and vibrations because of the possible humming. These can quickly find a resonator and then put the fan acoustically on the sidelines, even if the fan is decoupled quite well. After all, this is precisely the reason why we work with a large-volume and very rigid chamber rather than a thin and long wind tunnel. This also applies to the end user, who may please pay attention to a good decoupling here.
Volume flow and speeds
If you look at the next graph, the curve is similar to the Lian Li Unifan SL-120, which I have included here for comparison (red curve). You can also see from this curve that the Lian Li Unifan SL-INF120 acts very similarly, but offers more performance. However, since the older fan doesn’t manage the full speed range, I also refrained from a more elaborate comparison to be fair. Just this: the new one is really better, even at the same speeds.
Conclusion
The fan does not cut a bad figure as a case fan and on radiators. It is, of course, primarily oriented towards luminosity and features, so you won’t get the quietest fan in this price range here. However, if the offered optical and mechanical features up to the clickable daisy chain are worth the extra charge (and there should be quite a few), the Lian Li Unifan SL-INF120 is the better product compared to the Lian Li Unifan SL-120.
Humming is an issue that cuts the fifth star in half, but if you know about these idiosyncrasies, you just adjust the rev band. You don’t need the 2100 rpm either, because the fan only gets louder from about 1950 rpm, but hardly more performant. The thickness of the fans due to the decoupling is not 25 mm as stated, but up to 27.5 mm, you have to know and consider that. Otherwise, it’s a nice product, but it wouldn’t have needed the silly blackout tango at all. Because let’s be honest, on Fridays at 4 p.m. the mass of readers is mentally already in the weekend and physically already in the beer garden or on the balcony with liquid cooling. Wasted attention for nothing. It’s a shame, but in the end it’s primarily a loss for PR and the provider.
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