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 version is ideal for efficient case ventilation or other applications that demand an even balance of performance and quietness.