Ultra low noise fan, 140x140x25mm, 12V, 3-pin Molex, max. 900 RPM, max. 13.2 dB(A), >150,000 h MTTF Renowned NF-P14s high-end 140x25mm 12V fan, more than 100 awards and recommendations from international computer hardware websites and magazines, hundreds of thousands of satisfied users Highly optimised low-noise design provides outstanding quietness of operation, excellent static pressure and strong airflow (CFM), square frame for water cooling radiators and chassis ventilation Low-speed ultra-quiet 900rpm 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.)