Designed for pressure demanding applications such as heatsinks & radiators, the Focused Flow frame features 11 stator guide vanes tht straighten, channel & focus the airflow. * The NF-F12?s stator guide vanes are set out in Varying Angular Distance and feature Vortex-Control Notches. * Custom designed for the new Focused Flow frame and to work in tandem with the eleven stator guide vanes, the NF-F12?s seven blade Heptaperf impeller has been carefully optimised to achieve a perfect balance between power and quietness. * Integrated Anti-Vibration Pads. Integrated Anti-Vibration Pads made from extra-soft silicone minimise the transmission of minute vibrations while maintaining full compatibility with all standard mounting systems and fan clips used on heatsinks. * The NF-F12 is the first fan to feature the further optimised second generation of Noctua?s renowned, time-tested SSO bearing. With SSO2, the rear magnet is placed closer to the axis to provide even better stabilisation, precision and durability. * Low-Noise Adaptor. The NF-F12 is supplied with a Low-Noise Adaptor (L.N.A.) that reduces the maximum fan speed from 1500 to 1200rpm. The L.N.A can be used either to run the fan at a fixed speed of 1200rpm or to cap the maximum speed when using automatic PWM control. * Size: 120x120x25 mm. Connector: 4-pin PWM. Bearing: SSO2. Blade Geometry: Heptaperf. Frame Technology Focused Flow. Rotational Speed (+/- 10%): 1500 RPM. Rotational Speed with L.N.A. (+/- 10%): 1200 RPM. Min. Rotational Speed (PWM): 300 RPM. Airflow: 93,4 m³/h. Airflow with L.N.A.: 74,3 m³/h. Acoustical Noise: 22,4 dB(A). Acoustical Noise with L.N.A.: 18,6 dB(A) * Static Pressure: 2,61 mm H2O. Static Pressure with L.N.A.: 1,83 mm H2O. Max. Input Power: 0,6 W. Max. Input Current: 0,05 A. Voltage: 12 V. MTBF: > 150.000 h. Scope of Delivery: Low-Noise Adapter (L.N.A.), 4-Pin Y-Cable, 30cm Extension Cable, 4 Vibration-Compensators, 4 Fan Screws.