NF-A14x25 G2 PWM Sx2-PP ch.bk Noctua NF-A14x25 G2 PWM Sx2-PP chromax.black, 2x 140 mm

State-of-the-art quiet cooling performance for CPU coolers in a sleek all-black design: The chromax.black dual set of the award-winning NF-A14x25 G2 140-mm fan.

Succeeding the iconic NF-A15, the NF-A14x25r G2 has quickly established itself as a new benchmark for premium quality quiet round-frame 140x25-mm fans. Its advanced aerodynamic engineering featuring a novel Progressive Bend impeller design with Centrifugal Turbulator hub, winglets and a record tight tip clearance of only 0.7 mm enables the G2 model to provide a significant boost in performance-to-noise efficiency over its renowned predecessor.

The Sx2-PP set contains two fans that are slightly offset in speed (+/- ~25 rpm) in order to avoid undesirable harmonic phenomena such as beat frequencies, which can be heard as intermittent vibrations or periodic humming due to interference. This makes it ideal for push-pull applications and situations where two or more fans run side by side, such as in typical chassis fan configurations and on 280-mm or 420-mm water cooling radiators.