Noctua SSO Bearing Fan Retail Cooling NF-S12B redux-1200 PWM Tens of thousands of quiet cooling enthusiasts around the globe swear by Noctuid's classic NF-S12B. Thanks to its impressive quietness, excellent performance and impeccable quality, the NF-S12B has become an established reference for quiet 120mm fans. The redox product line reissues some of Noctuid's most popular, award-winning models. Typical PC case ventilation applications require high airflow but only medium static pressure. NF-S12B has been specifically designed for high airflow efficiency & low noise in order to provide best results in these so called low impedance applications. Reducing critical rotor stator interaction, Beveled Blade Tips permit to combine extended leading edges and a higher blade surface area with quieter operation and thus form a cornerstone of the fan's outstanding efficiency. Supporting fully auto. 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 & thus makes the fan quiet 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.