10 Best Noctua 24v 40mm Fan for 2025

List of Top Rated Noctua 24v 40mm Fan from thousands of customer reviews & feedback.

Updated On Mar 2025

2,296 Reviews Studied

By Customer Ratings

1
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Noctua NF-A4x10 FLX, Premium Quiet Fan, 3-Pin (40x10mm, Brown) Read Review

  • Premium quiet fan, 40x40x10 mm, 12V, 3-pin Molex, 4500/3700 RPM, max. 17.9 dB(A), >150,000 h MTTF
  • Award-winning 40x10mm A-series fan with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance
  • Ideal replacement for noisy or broken 12V 4cm fans in 3D printers, DVRs, NAS, switches, routers, other network and storage devices, etc
  • 3-pin 12V FLX version can be run 4500 or 3700 rpm using the supplied Low-Noise Adaptors to fine-tune the fan for maximum airflow or near-silent operation
  • Includes anti-vibration mounts, fan screws, Low-Noise Adaptor, extension cable and OmniJoin adaptor set for connecting the fan to proprietary fan headers
2
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Noctua NF-A6x25 5V PWM, Premium Quiet Fan, 4-Pin, 5V Version (60mm, Brown) Read Review

  • Premium quiet fan, 60x60x25mm, 5V, 4-pin PWM, max. 3000 RPM, max. 19.3 dB(A), >150,000 h MTTF
  • Award-winning 60x25mm A-series fan with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance
  • 5V 4-pin PWM version (3000rpm maximum speed) with polarity protection for 5V applications with PWM speed control
  • Ideal replacement for noisy or broken 5V 6cm fans in 3D printers, DVRs, NAS, switches, routers, other network and storage devices, etc.
  • Includes anti-vibration mounts, fan screws, extension cable, y-cable and OmniJoinTM adaptor set for connection to proprietary fan headers
3
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Noctua NF-A4x20 5V PWM, Premium Quiet Fan, 4-Pin, 5V Version (40x20mm, Brown) Read Review

  • Premium quiet fan, 40x40x20 mm, 5V, 4-pin PWM, max. 5000 RPM, max. 14.9 dB(A), >150,000 h MTTF
  • Award-winning A-series design with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance
  • 40x20mm size ideal for NVIDIA Jetson Nano, 1U applications or replacing fans in network and storage equipment (routers, switches, NAS etc.) or other devices such as DVRs
  • 5V 4-pin PWM version (5000rpm maximum speed) for 5V applications with PWM control
  • Includes anti-vibration mounts, fan screws, extension cable and OmniJoin adaptor set for connecting the fan to proprietary fan headers
4
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Noctua NF-A4x20 5V, Premium Quiet Fan, 3-Pin, 5V Version (40x20mm, Brown) Read Review

  • Premium quiet fan, 40x40x20 mm, 5V, 3-pin Molex, 5000 RPM, 14.9 dB(A), >150,000 h MTTF
  • Award-winning A-series design with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance
  • 40x20mm size ideal for 1U applications or replacing fans in network and storage equipment (routers, switches, NAS etc.) or other devices such as DVRs
  • 5V 3-pin version (5000rpm) for 5V-based industrial applications or replacing 5V fans in various devices
  • Includes anti-vibration mounts, fan screws, extension cable and OmniJoin adaptor set for connecting the fan to proprietary fan headers
5
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Noctua NF-A4x10 5V, Premium Quiet Fan, 3-Pin, 5V Version (40x10mm, Brown) Read Review

  • Premium quiet fan, 40x40x10 mm, 5V, 3-pin Molex, 4500 RPM, 17.9 dB(A), >150,000 h MTTF
  • Award-winning 40x10mm A-series fan with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance
  • Ideal replacement for noisy or broken 5V 4cm fans in 3D printers, DVRs, NAS, switches, routers, other network and storage devices, etc.
  • 3-pin 5V version with 4500rpm, not to be used at 12V (such as in PC environments)
  • Includes anti-vibration mounts, fan screws, Low-Noise Adaptor, extension cable and OmniJoin adaptor set for connecting the fan to proprietary fan headers
6
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Noctua NF-A6x25 5V, Premium Quiet Fan, 3-Pin, 5V Version (60mm, Brown) Read Review

  • Premium quiet fan, 60x60x25 mm, 5V, 3-pin Molex, 3000 RPM, 19.3 dB(A), >150,000 h MTTF
  • Award-winning 60x25mm A-series fan with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance
  • 3-Pin 5V version (3000 RPM) with polarity protection for 5V industrial applications.
  • Ideal replacement for noisy or broke 5V 6cm fans in DVRs, NAS, network and storage devices, 3D printers, etc.
  • Includes anti-vibration mounts, fan screws, extension cable and OmniJoinTM adaptor set for connection to proprietary fan headers
7
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Noctua NF-A4x20 PWM, Premium Quiet Fan, 4-Pin (40x20mm, Brown) Read Review

  • Premium quiet fan, 40x40x20 mm, 12V, 4-pin PWM, max. 5000 RPM, max. 14.9 dB(A), >150,000 h MTTF
  • Award-winning A-series design with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance
  • 40x20mm size ideal for 1U servers or replacing fans in network and storage equipment (routers, switches, NAS etc.) or other devices such as DVRs
  • 4-pin PWM version for automatic speed control via 4-pin PWM fan headers, 5000rpm maximum speed (4400rpm with supplied Low-Noise Adaptor)
  • Includes anti-vibration mounts, fan screws, extension cable and OmniJoin adaptor set for connecting the fan to proprietary fan headers
8
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Noctua NF-A4x20 FLX, Premium Quiet Fan, 3-Pin (40x20mm, Brown) Read Review

  • Premium quiet fan, 40x40x20 mm, 12V, 3-pin Molex, 5000/4400/370 RPM, max. 14.9 dB(A), >150,000 h MTTF
  • Award-winning A-series design with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance
  • 40x20mm size ideal for 1U applications or replacing fans in network and storage equipment (routers, switches, NAS etc.) or other devices such as DVRs
  • Comes with free anti vibration brackets, fan screws, Extension Cable and Omnijoin adaptor kit to to use with embedded proprietary connections
  • 3-pin FLX version provides 5000/4400/3700rpm speed settings via Low-Noise Adaptors to fine-tune the fan for maximum airflow or near-silent operation
  • Includes anti-vibration mounts, fan screws, extension cable and OmniJoin adaptor set for connecting the fan to proprietary fan headers
9
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Noctua NF-A4x10 PWM, Premium Quiet Fan, 4-Pin (40x10mm, Brown) Read Review

  • Premium quiet fan, 40x40x10 mm, 12V, 4-pin PWM, max. 5000 RPM, max. 12.9 dB(A), >150,000 h MTTF
  • Award-winning 40x10mm A-series fan with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance
  • Ideal replacement for noisy or broken 12V 4cm fans in 3D printers, DVRs, NAS, switches, routers, other network and storage devices, etc.
  • 4-pin PWM version for automatic speed control via 4-pin PWM fan headers, broad 1000-5000rpm speed range (3700rpm max. with supplied Low-Noise Adaptor)
  • Includes anti-vibration mounts, fan screws, Low-Noise Adaptor, extension cable and OmniJoin adaptor set for connecting the fan to proprietary fan headers
10
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Noctua NF-F12 iPPC-24V-3000 Q100 IP67 PWM, Heavy Duty Cooling Fan, 4-Pin, 3000 RPM, 24V Version (120mm, Black) Read Review

  • Heavy duty cooling fan, 120x120x25 mm, 24V, 4-pin PWM, AEC-Q100, IP67 certified, max. 3000 RPM, max. 41.3 dB(A), >150,000 h MTTF
  • Award-winning 120x25mm fan with FocusedFlow frame for high static pressure and superior cooling efficiency
  • 24V, 3000rpm industrialPPC (Protected Performance Cooling) version with 4-pin connector and PWM speed control (1600rpm max. in 12V PC environments)
  • AEC-Q100 qualified NE-FD4 motor driver IC with extended burst and surge immunity for automotive applications and harsh electronic environments
  • Ruggedised fibre-glass reinforced polyamide construction and IP67 certified water and dust protection

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