? The 80mm fan operates at a constant speed of 2000 ± 10%. This allows for significant increase in efficiency. ? The Cooling Fan airflow is up to 50 m³ / h and the noise generated by the propeller is 15,6 dB, which makes it a very quiet and efficient fan in its class available on the market. ? Highly efficient operation and 80x80x25 mm dimensions allow the fan to be mounted on the heatsink for efficient cooling of the processor instead of the loud noise of other fans from different manufacturers. ? The mounting of this Air Cooler is very simple - the PC Fan is mounted on 4 screws, attached just like the standard, allows quick and easy replacement of the loud fan for a new quiet Quiet Fan. ? The modern FDB (Fluid Dynamic Bearing) with oil fill ensures quiet case fan operation and extended lifespan up to 100,000 h.