Noctua NH-L9x65. Type: Cooler, Fan diameter: 9,2 cm, Rotation speed (min.): 600 RPM, Rotation speed (max.): 2500 RPM, Airflow: 57,5 m³/h, Minimum air pressure: 1,06 mmH2O, Maximum air pressure: 2,11 mmH2O. Voltage: 12 V. Width: 95 mm, Depth: 65 mm, Height: 95 mm