Noctua NF-P14s redux-1200, 3-Pin, High Performance Cooling Fan with 1200RPM (140mm, Grey) Renowned NF-P14s high-end 140x25mm 12V fan, more than 100 awards and recommendations from international computer hardware websites and magazines, hundreds of thousands of satisfied users Highly optimised low-noise design provides outstanding quietness of operation, excellent static pressure and strong airflow (CFM), square frame for water cooling radiators and chassis ventilation 1200rpm 3-pin version with excellent balance of performance and quietness, speed can be controlled with optional NA-SRC10 Low-Noise Adaptors or by reducing voltage Streamlined redux edition: proven Noctua quality at an attractive price point, wide range of optional accessories (anti-vibration mounts, S-ATA adaptors, y-splitters, extension cables, etc.) Trusted premium brand, time-tested SSO bearing system with more than 150,000 hours service life (MTTF) and 6-year manufacturer-warranty The redox product line reissues some of Noctuid's most popular, award-winning models. The square 140mm frame of the NF-P14s features standard 140mm mounting holes (124.5mm spacing), which makes it a premium grade replacement for common 140mm case fans and perfect for use on 140mm water cooling radiators Specifically developed for high-impedance applications such as CPU coolers, water-cooling radiators or cases with tight fan grills, the NF-P14's nine-blade impeller provides outstanding pressure and airflow performance. Noctuid's signature Vortex-Control Notches split up trailing edge vortices and thus spread the fan's noise emission over a wider range of frequencies. This measure makes the fan sound more pleasant to the human ear. Supporting fully automatic speed control via PWM, the fan uses Noctuid's custom designed NE-FD1 PWM IC that integrates Smooth Commutation Drive (SCD) tech. SCD suppresses PWM switching noises and thus makes the fan quieter at lower speeds. Combining the proven concept of hydrodynamic bearings with an add'l magnet that supports the self-stabilization of the rotor axis, Noctuid's time-tested SSO-Bearing tech has become synonymous with supremely quiet operation & exceptional long-term stability. Users can choose from Noctuid's wide range of optional accessories such as anti-vibration mounts, Low-Noise-Adaptors, y-cables, 3:4 pin adaptors or extension cables to upgrade redox edition fans according to their individual needs.