Now, the competitors must brace themselves, especially since we even measured the Power Fan with up to 3000 RPM, and it was still a so-called PVT sample. The final version will only differ in minor details, such as the lack of disassembly capability; the rest remains the same. What I also need to emphasize: the fan is so quiet when starting and below 1000 RPM that we had to use a significantly more expensive microphone (Earthworks Audio M50 instead of Beyerdynamic) and another noise-free XLR interface to make it measurable without the background noise overshadowing the fan noises.
Despite our best efforts and even with a separate chamber and insulation, we cannot measure significantly below 17 dBA. There’s a physical and financial limit to this. However, in the future, thanks to better recording technology, there will be less noise on the recordings, but the level remains the same. Just much clearer. In addition to the calibration on paper, we also cross-checked the measured values of the Noctua NF-A12x25 PWM and the be quiet! Silentwings 4, which were almost identical to the previous values, which is why the older measurements are still valid.
All measured values are self-explanatory, and the fan consistently scores in all installation scenarios due to its tremendous acoustic restraint. It also remains unimpressed by the radiator construction and blows away all previously tested fans with a gesture of nonchalance. We will compare the Alphacool Apex Stealth Metal Power Fan with other fans on the following pages, but the result is already a new benchmark statement for the rest. But enough of the euphoria, here are the eagerly awaited measurement data:
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