ARCTIC Freezer 50 - Multi Compatible Dual Tower CPU Cooler with A-RGB. Type: Cooler, Fan diameter: 120/140 mm, Rotational speed (min): 200 RPM, Rotational speed (max): 1800 RPM, Noise level: 0.4 sone, Bearing type: Fluid Dynamic Bearing (FDB). Voltage: 12 V. Width: 149.5 mm, Depth: 148 mm, Height: 166 mm