be quiet! had introduced some time ago the Silent Wings 4 and the Silent Wings 4 Pro series in the usual black color and now releases the entire lineup also in white color. Users who love the white color design will for sure be happy, and it's nice to see so many different solutions keep releasing either for 120mm or 140mm fan dimensions.

The Silent Wings 4 series includes a different blade design either for the 120mm (9 blades) or the 140mm (7 blades) that promises improved performance with slight reduction at noise levels at all speeds. The included 6-pole fan motor and fluid-dynamic bearing also promise good performance and durability up to 300.000h! very impressive stats if you ask me. As we mentioned earlier there are the Pro and the non-Pro versions for the Silent Wings 4 and the following table illustrates their differences, the Pro only comes with a PWM function and onboard speed switch, which may be useful for some users. Lastly, the Pro has more mounting options (mainly for radiators), while the sleeved fan cable (long up to 50cm) in the Pro version has a high-grade sleeve.

Passing the performance tests, we changed two fans of the be quiet! Silent Base 802 case from the stock Silent Wings 3 to the Silent Wings Pro 4 and we found that the overall cooling performance increased since we had lower internal temperatures (CPU coolers Dark Rock Pro 4 - AMD 5600X - full load) from average of 56.42 Celsius down to 55.05 Celsius, resulting minus 1.37 Celsius, which noise levels were almost equal (Silent Wings Pro 4 45.30db vs Silent Wings 3 45.25dB). Of course, users can further tune the Silent Wings 4 Pro either with the included speed switch or via the PWM function of BIOS/Motherboard. Concluding this review, we can highly suggest the new Silent Wings 4 series (either normal or PRO variations) either in black or white color, you have so many choices to choose and the retail price isn't bad also. :-)