Aerocool VERKHO2, Cooler, 9 cm, 800 RPM, 2000 RPM Aerocool VERKHO2. Type: Cooler, Fan diameter: 9 cm, Rotational speed (min): 800 RPM, Rotational speed (max): 2000 RPM, Bearing type: Hydraulic. Width: 92 mm, Depth: 62 mm, Height: 142 mm