Nine airflow-optimized fan blades that reduce noise-generating turbulence while increasing airflow A long-life rifle bearing that contributes to an operating lifetime of 80,000 hours Even at maximum speed, operates at only 36.3 dB(A) A fan speed of 1,600 rpm for extremely high air pressure Especially recommended for use in water cooling and CPU cooling builds Product conception, design and quality control in Germany Outstanding price-performance ratioThe Pure Wings 2 140mm high-speed fan brings exceptional be quiet! cooling to entry level computing. The extremely high air pressure makes it a perfect choice for powerful water- and air-cooled systems.Pure Wings 2 high-speed fans offer outstanding reliability and solid cooling for a great price-performance ratio. Performance Bearing type Rifle bearing Maximum air pressure 1.82 mmH2O Airflow 160 m³/h Maximum airflow 94.2 cfm Noise level (high speed) 36.3 dB Rotational speed (max) 1600 RPM Compatible processor series Not supported Supported