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-A14x25r G2 round-frame 140mm fan. Succeeding the iconic NF-A15, the NF-A14x25r G2 has quickly established itself as a new benchmark for premium quality quiet round-frame 140x25mm 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 0.7mm enables the G2 model to provide a significant boost in performance-to-noise efficiency over its renowned predecessor. At the same time, its etaPERF motor with SupraTorque can leverage extra torque headroom when required, which makes the NF-A14x25r G2 an ideal upgrade for NH-D15, NH-D15S and NH-U14S heatsinks. The Sx2-PP set contains fans that are slightly offset in speed (+/- ~25rpm) in order to avoid undesirable harmonic phenomena such as intermittent vibrations or periodic humming due to interference, which can be heard as beat frequencies. This makes it ideal for equipping coolers with fans in a push-pull configuration. Topped off with ’s trusted premium-SSO2 bearing, more than 150,000 hours MTTF and a 6-year manufacturer’s , the NF-A14x25r G2 PWM Sx2-PP chromax.black is the perfect choice for users who are looking for a dual 140mm round fan set that combines cutting-edge quality, quietness and performance in an all-black style.
Dedicated push-pull set (Sx2-PP) with round-frame NF-A14x25r G2 PWM 140x25mm fans that are slightly off-set in speed (+/- ~25rpm) in order to avoid undesired acoustic interaction phenomena
State-of-the-art engineering (Progressive-Bend impeller with winglets and Centrifugal Turbulator, Flow Acceleration Channels, AAO frame) and construction (Sterrox LCP, ultra-tight tip clearance)
Ideal choice for push-pull applications on 14cm CPU coolers such as the NH-D15, NH-D15S or NH-U14S series, next-generation quiet cooling performance with unprecedented acoustic fine-tuning measures
All-black chromax version with black anti-vibration mounts, fan screws, Low-Noise Adaptors (L.N.A.), extension cables and splitter cable
Trusted quality with premium-SSO2 bearing (MTTF > 150,000 h), safety certifications from UL and TÜV, protected against reverse polarity, over voltage and over current (short-circuits)