Fan specifications Model Noctua NF-A15 PWM Bearing SSO2 Max. Rotational Speed (+/- 10%) 1500 RPM Max. Rotational Speed with L.N.A. (+/- 10%) 1200 RPM Min. Rotational Speed (PWM) 300 RPM Max. Airflow 140,2 m³/h Max. Airflow with L.N.A. 115,5 m³/h Max. Acoustical Noise 24,6 dB(A) Max. Acoustical Noise with L.N.A. 19,2 dB(A) Input Power 1,56 W Voltage Range 12 V MTBF > 150.000 h