arctic f9 silent case fan

ARCTIC fan F9 Silent Case Fan Greater efficiency - less noise at higher airflow At low fan speed, engine noise is minimal. The engine is developed in Germany with new materials and lubricant. This combination reduces friction and noise. The fan bearing is silent, but it also drives more air at a given speed than standard standard bearings. Long life The Fluid Dynamic Bearing bearing contains an oil capsule that prevents lubricant leakage. This makes the bearing as quiet as sliding, but ens