Be quiet! announced its new family of high-performance fans, and these are the Silent Wings 4as well as some Silent Wings PRO 4 for those who can afford to pay for the best, resulting in high quality cable jacket, optimization for use on radiators and speed switch (medium, high and ultra-high).
The new generation of Silent Wings fans combine their famous 6-pole Fluid Dynamic Bearing motor for smooth and quiet operation, with new and improved features such as reduced clearance and optimizations for higher air pressure and airflow . Now the Silent Wings 4 can spin faster and offers more performance with sound levels similar to its predecessor.
The Be quiet! Silent Wings 4 of 120 mm are able to reach a speed of 1600RPM (2500 RPM for the Hight Speed variant) offering an airflow of up to 82.74CFM (130.31 CFM) with a static pressure of 1.79mmH2O (3.96 mmH2O) and a sound volume of 18.9dBA (31.2dBA).
The 140 mm variant is capable of a speed of 1100RPM (1900 rpm high speed) with an airflow of 87.16CFM (133.2 CFM), a static pressure of 0.92mmH2O (2.36 mmH2O) and a sound intensity of 13.6dBA (29.3dBA).
120mm fans are on sale for €23.90, regardless of the choice of 1600 RPM, 1600 RPM with PWM or 2500 RPM model. The 140 mm variant costs €24.90.
On the other hand we have the Be quiet! Silent Wings PRO 4 120 mm and 140 mm, which rotate at speeds of 3000 and 2400RPM generating an airflow up to 142.5 and 165.5 CFM with a static pressure of 5.31 and 3.64 mmH2O and with an almost identical loudness of 36.9 and 36.8 dBA. The 120mm model costs €31.90while the 140 mm arrives for €32.90.