Arctic f12 silent 120mm 3 pin case fan greater efficiency less noise at higher airflow at low fan speed the motor noise is key a motor developed in germany with a new alloylubricant combination reduced friction and noise long service life the fluid dynamic bearing comes with an oil capsule that avoids lubricant leakage thus this bearing is as quiet as a sleeve bearing but comes with a significantly higher service life innovative design enables quiet and efficient ventilation the inn