Noctua NF-S12B redux-700, 3-Pin, High Performance Cooling Fan with 700RPM (120mm, Grey) Renowned NF-S12B high-end 120x25mm 12V fan, more than 100 awards and recommendations from international computer hardware websites and magazines, hundreds of thousands of satisfied users Airflow-optimised blade design with high CFM and outstanding quietness of operation, ideal for low-noise case cooling, chassis ventilation and other applications with low airflow resistance Low-speed ultra-quiet 700rpm 3-pin version for demanding silent enthusiasts, virtually inaudible with optional NA-SRC10 Low-Noise Adaptors or at reduced voltage Streamlined redux edition: proven Noctua quality at an attractive price point, wide range of optional accessories (anti-vibration mounts, S-ATA adaptors, y-splitters, extension cables, etc.) Trusted premium brand, time-tested SSO bearing system with more than 150,000 hours service life (MTTF) and 6-year manufacturers warranty