Be Quiet! Silent Wings PRO 4 Fan Overview & Testing

Noise Levels

At the fan’s highest speeds, the Be Quiet Silent Wings PRO 4 is not by any means “Silent”. Be Quiet’s own specitifactions say that they can have noise levels up to 36.9 dBA, a level that most dBA noise charts place a little below typical home noise levels. While these fans are not crazy loud, they are not silent when running at max. 

Thankfully, be quiet has designed these fans with both silence-oriented users and performance-oriented users in mind. Users can cap these fans at 2,500 RPM in High Speed mode to lower maximum noise levels and RPMs can be capped at 1,600 RPM in medium mode to deliver very quiet usage. Beyond that, PWM control can be used to lower RPMs further is users wish. 

These fans are designed to be tailored to your own personal needs. Be it high RPM maximised cooling on optimised performance in lower noise modes. The choice is up to you. 

Performance 

Sadly, our testing with these fans is limited in scope. Be Quiet only sent us one of these fans to test, preventing us from conducting a huge number of tests. A single fan is not enough to test the Silent Wing PRO 4 on a 240mm or 360mm radiator for example. As such, we have called this look at this fan an overview, and not a full-on review.

At max RPMs on a be quiet Shadow Rock 3 heatsink in a Pure base 500DX case with Light Wings fans, we found that Be Quiet’s new Silent Wings PRO fan delivered us CPU thermals that are 3 degrees cooler when used on be quiet’s heatsink. Note that this was only with a single fan changed on this case, and that larger temperature deductions could be possible if we replaced more fans.

For this test, we fixed the voltage of our CPU and disabled precision boost overdrive. This prevents our Ryzen 5 3600X from auto-overclocking itself and invalidating our results.  

What we can confirm here is that be quiet’s new fans have the potential to lower your system’s maximum thermals. Though it is worth noting that these fans are running at a higher RPM.