The classic NF-B9 is a long-standing favourite among enthusiast users around the world and helped to found Noctuas reputation as a top-tier manufacturer of premium quality quiet cooling components. The new redux edition reissues this award-winning model in a streamlined, accessibly priced package that has been reduced to the essential core: the NF-B9 premium fan. Its industry grade SSO bearing, over 150.000 hours MTBF rating and full 6 years manufacturers warranty make the NF-B9 redux a proven premium choice that provides trusted Noctua quality at an attractive price point. The 1600rpm PWM version features Noctuas proprietary NE-FD1 PWM IC for automatic speed control, which allows to strike a perfect balance between high cooling capacity and low noise operation in each given situation.