The fans proprietary frame and blade design creates a good balance between high airflow and low noise production, cooling even the hottest systems. The Fluid Dynamic bearing structure (FDB) is made of high quality compressed metal, which reduces friction and contributes to quiet operation as well as a long life span. Vibration and shock absorbing rubber pads are integrated into the fans design and further enhance a silent operation, making this fan ideal for cases and coolers. The Fluid Dynamic bearing structure (FDB) is made of high quality compressed metal, which reduces friction and contributes to quiet operation as well as a long life span. The fans proprietary frame and blade design creates a good balance between high airflow and low noise production, cooling even the hottest systems.