Noctua SSO Bearing Fan Retail Cooling NF-P14s redux-900 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. The latest version of Noctuid's advanced Smooth Commutation Drive system ensures superb running smoothness by eliminating torque variations and switching noises. This makes the fan remarkably quiet even at very close distance. 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.