The Pure Wings 2 family fans are unique in their class, combining outstanding reliability, silent cooling, and a great price-for-performance ratio. It is impressive how much quiet technology the engineering team has crammed into these fans at this amazing price. They are the ultimate reason to put well-known be quiet! silent cooling in your PC if you haven't already done so.The Pure Wings 2 80 mm model combines all of the above essential features. It provides maximum cooling airflow and operating noise levels down to a silent 18.2 dB. The increased air pressure makes the fans especially recommended for use in air cooling setups.