Noctua NF-B9-1600 Case Fan

The NF-B9's highly-optimized blade design achieves an exceptional level of airflow and static pressure that most other fans can only reach at much higher speeds. Beveled blade tips, Vortex-Control Notches as well as Noctua's SCD drive system and premium-grade SSO-Bearing ensure outstanding quietness and long-term stability. Bearing Type: SSO RPM: Rotational Speed (+/- 10%) 1600 RPM Rotational Speed with L.N.A. (+/- 10%) 1300 RPM Rotational Speed with U.L.N.A. (+/- 10%) 1000 RPM Noise Level: Acoustical Noise 17.6 dB(A) Acoustical Noise with L.N.A. 13.1 dB(A) Acoustical Noise with U.L.N.A. 7.9 dB(A) Power Connector: 3 / 4 Pin Compatibility: Case Dimensions: 92 x 92 x 25mm