Noctua NF-A6x25 FLX – 60mm Premium Quiet Fan with Flexible Voltage Options
The Noctua NF-A6x25 FLX is a high-quality 60mm fan engineered for quiet operation, excellent airflow, and robust longevity in space-constrained applications. Thanks to Noctua’s advanced aerodynamic design and SSO2 bearing, the NF-A6x25 FLX combines performance with whisper-quiet acoustics. The FLX version includes Low-Noise and Ultra-Low-Noise Adapters, allowing fine-tuned RPM control to meet different cooling demands.
Key Features:
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Compact 60mm form factor for tight spaces and legacy systems
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FLX version with 3-speed settings: 3000 / 2400 / 1600 RPM
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SSO2 bearing for ultra-low noise and 150,000h MTTF
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Flow Acceleration Channels and Vortex-Control Notches for optimized acoustics
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Includes L.N.A. and U.L.N.A. for fine-tuned performance
Specifications:
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Dimensions: 60 x 60 x 25 mm
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Weight: 80 g
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Rotational Speed:
• 3000 RPM (max)
• 2400 RPM with L.N.A.
• 1600 RPM with U.L.N.A. -
Airflow:
• 29.2 m³/h
• 22.8 m³/h (L.N.A.)
• 15.1 m³/h (U.L.N.A.) -
Acoustical Noise:
• 19.3 dB(A)
• 13.7 dB(A) (L.N.A.)
• 8.2 dB(A) (U.L.N.A.) -
Static Pressure: 2.18 mmH₂O
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Voltage: 12V
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Input Power: 0.96 W
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Connector: 3-pin
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Bearing Type: SSO2
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MTBF: >150,000 hours
Compatibility:
Designed for legacy systems, networking gear, 1U rackmount servers, compact enclosures, NAS, and fan upgrades for small electronics. Fits standard 60mm fan mounts.
Additional Features:
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Comes with L.N.A. and U.L.N.A. cables for custom speed/noise profiles
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Includes 30cm extension cable and 3:4-pin adapter
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Ideal replacement fan for mission-critical 60mm devices
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Backed by Noctua’s 6-year manufacturer warranty
Customer Benefits:
The NF-A6x25 FLX provides high-quality, low-noise cooling for tight-fit applications where reliability and silence matter. Perfect for users replacing noisy stock fans in routers, DVRs, or HTPCs without sacrificing airflow.
What’s in the Box:
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NF-A6x25 FLX fan
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Low-Noise Adapter (L.N.A.)
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Ultra-Low-Noise Adapter (U.L.N.A.)
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30cm extension cable
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3:4-pin adapter
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4x fan screws
Compliance:
This product meets all applicable European and international standards (CE, RoHS, REACH, WEEE, etc.). It has been designed and tested for maximum safety, performance, and environmental responsibility.
Manufacturer Contact:
Company Name: Noctua
Address: Noctua Produktions GmbH, Lastenstraße 19, 4020 Linz, Austria
Email: support(at)noctua(dot)at



