The new redux edition NF-S12B 120mm fans are designed for low impedance case cooling applications and feature an industry grade SSO bearing, an MTBF rating of over 150,000 hours and a 6 year Noctua warranty. The NF-S12B redux are a proven premium choice that provides trusted Noctua quality at an attractive price point. The 1200RPM PWM version features Noctua’s proprietary NE-FD1 for automatic speed control, which allows to strike a perfect balance between high cooling capacity and low noise operation in each given situation.