EK Water Blocks 3831109854204. Type: Fan, Fan Diameter: 12 cm, Rotation Speed (Min.): 400 RPM, Rotation Speed (Max): 1800 RPM, Noise Level (High Speed): 24.3 dB, Minimum Air Pressure: 1.94 mmH2O. Width: 120 mm, Depth: 29 mm, Height: 120 mm. Product colour