40-80 mm.

• Renowned NF-R8 high-end 80x25mm 12V fan, more than 100 awards and recommendations from international computer hardware websites and magazines, hundreds of thousands of satisfied users
• 1800rpm 4-pin PWM version with excellent balance of performance and quietness, supports automatic motherboard speed control (powerful airflow when required, virtually silent at idle)
• Highly optimised low-noise design with outstanding quietness of operation, static pressure and airflow (CFM), ideal for chassis ventilation, cooling fan replacement for NAS and other devices, etc.
• 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 manufacturer-warranty

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