Following in the footsteps of the successful NF-P12, the NF-P14 is a highly optimised, premium quality 140mm fan with Vortex-Control Notches for superb quietness & outstanding aerodynamic efficiency. Metal reinforcements, SCD2 technology & Noctua's premium grade SSO-Bearing guarantee exceptional running smoothness & excellent long-term stability. Using the same hole-spacing as common 120mm fans & achieving a superior airflow/noise ratio, the NF-P14 is ideal for upgrading 120mm CPU or case fans. Features 140mm Impeller with Vortex Control Notches Metal Reinforcements Round frame with 120mm mounting holes 3 speed settings for full flexibility Smooth Commutation Drive 2 SSO-Bearing Noise levels from only 10.1 d B (A) Six year warranty 140mm Impeller with Vortex Control Notches Thanks to its psycho-acoustically optimised nine blade impeller with staggered Vortex-Control Notches, the NF-P14 combines superb quietness with exceptional airflow & static pressure. Read more info on Noctua's website Metal Reinforcements Both the impeller hub & the bearing shell of the NF-P14 are metal reinforced in order to achieve ultimate manufacturing precision, high durability & vibration-free running. Read more info on Noctua's website Round frame with 120mm mounting holes Using a round frame with the same hole-spacing as common 120mm fans & producing more airflow due to its larger diameter, the NF-P14 is a perfect upgrade for 120mm CPU or case fans. Thanks to the supplied adaptors, the NF-P14 also fits common 140mm mounting holes. Read more info on Noctua's website 3 speed settings for full flexibility Providing 1200, 900 & 750 rpm speed settings via the supplied Low-Noise & Ultra-Low-Noise Adapters, the NF-P14 FLX (Flexibility) can be fine-tuned for superior airflow or maximum quietness. Smooth Commutation Drive 2 The latest version of Noctua's advanced SCD drive system ensures superb running smoothness by eliminating torque variations & switching noises. Read more info on Noctua's website SSO-Bearing Noctua's time-tested SSO-Bearing technology has become synonymous with supremely quiet operation & exceptional long-term stability. Read more info on Noctua's website Specifications Size 140x 140x 25 mm Bearing SSO-Bearing Blade Geometry NF-P14 Blade Design with VCN Rotational Speed (+/- 10%) 1200 RPM Rotational Speed with L.N.A. (+/- 10%) 900 RPM Rotational Speed with U.L.N.A. (+/- 10%) 750 RPM Airflow 64.9 CFM Airflow with L.N.A. 49.2 CFM Airflow with U.L.N.A. 41.9 CFM Acoustical Noise 19.6 d B (A) Acoustical Noise with L.N.A. 13.2 d B (A) Acoustical Noise with U.L.N.A. 10.1 d B (A) Static Pressure 1.29 mm H2O Static Pressure with L.N.A. 0.77 mm H2O Static Pressure with U.L.N.A. 0.53 mm H2O Input Power 1.2 W Input Current 0.1 A Voltage Range 12 V MTBF > 150, 000 h Warranty 72 months