OUTSTANDING RELIABILITY AND SILENT COOLING The Pure Wings 2 fans bring famous be quiet! silent cooling to entry level computing, yet are also appropriate for gaming and multimedia systems. The most important features include: Nine airflow-optimized fan blades that reduce noise-generating turbulence Long life rifle bearing gives an operating lifetime of 80,000 hours Even at maximum speed, operates at only 19.2 dB(A) Product conception, design and quality control in Germany PureWings 2 offer outstanding reliability and quiet operation at great price-for-performance ratio. They are the ultimate reason to put the well-known be quiet! silent cooling in your PC. VERY QUIET OPERATION