Top 10 Noctua Fan 40mm – Computer Case Fans

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1. Noctua

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Noctua NF-A4x20 FLX, 3-Pin 40x20mm, Premium Quiet Fan, Brown

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Noctua #ad - Award-winning a-series design with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance.

Includes anti-vibration mounts, fan screws, extension cable and OmniJoin adaptor set for connecting the fan to proprietary fan headers. 40x20mm size ideal for 1u applications or replacing fans in network and storage equipment routers, switches, NAS etc. Premium quiet fan, 12v, >150, 5000/4400/370 rpm, 3-pin molex, max.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. 14. 9 dba, 40x40x20 mm, 000 h MTTF. Or other devices such as DVRs.
BrandNoctua #ad
ManufacturerNoctua #ad
Height0.79 Inches
Length1.57 Inches
Weight5.52 Kilograms
Width1.57 Inches
Part NumberNF-A4x20 FLX
ModelNF-A4x20 FLX
Warranty6 year manufacturer’s warranty

2. Noctua

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3-Pin 40x10mm, Noctua NF-A4x10 FLX, Brown, Premium Quiet Fan

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Noctua #ad - Includes anti-vibration mounts, Low-Noise Adaptor, fan screws, extension cable and OmniJoin adaptor set for connecting the fan to proprietary fan headers.

17. 9 dba, 12v, >150, 40x40x10 mm, 3-pin molex, 4500/3700 rpm, 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, other network and storage devices, NAS, switches, DVRs, routers, 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. Premium quiet fan, max.
BrandNoctua #ad
ManufacturerNoctua #ad
Height0.39 Inches
Length1.57 Inches
Weight0.35 Pounds
Width1.57 Inches
Part NumberNF-A4x10
ModelNF-A4x10
Warranty6 year manufacturer’s warranty

3. Noctua

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Noctua NF-A4x10 PWM, Brown, Premium Quiet Fan, 4-Pin 40x10mm

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Noctua #ad - 5000 rpm, >150, 000 h mttF. With supplied Low-Noise Adaptor. 19. 6 dba, max. 4-pin pwm version for automatic speed control via 4-pin PWM fan headers, broad 1000-5000rpm speed range 3700rpm max.

40x10mm size ideal for 1u servers or replacing fans in network and storage equipment routers, switches, NAS etc. Includes anti-vibration mounts, Low-Noise Adaptor, fan screws, extension cable and OmniJoin adaptor set for connecting the fan to proprietary fan headers. Award-winning a-series design with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance. Or other devices such as DVRs. Premium quiet fan, 12v, 40x40x10 mm, 4-pin pwm, max.
BrandNoctua #ad
ManufacturerNoctua #ad
Height0.39 Inches
Length1.57 Inches
Weight0.37 Pounds
Width1.57 Inches
Part NumberNF-A4x10 PWM
ModelNF-A4x10 PWM
Warranty6 year manufacturer’s warranty

4. Noctua

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4-Pin 40x20mm, Noctua NF-A4x20 PWM, Brown, Premium Quiet Fan

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Noctua #ad - Premium quiet fan, 40x40x20 mm, max. 14. 9 dba, 12v, >150, 4-pin pwM, max. Or other devices such as DVRs. Includes anti-vibration mounts, extension cable, fan screws, y-cable and OmniJoin adaptor set for connecting the fan to proprietary fan headers.

40x20mm size ideal for 1u servers or replacing fans in network and storage equipment routers, switches, NAS etc. Award-winning a-series design with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance. 5000 rpm, 000 h mttF. 4-pin pwm version for automatic speed control via 4-pin PWM fan headers, 5000rpm maximum speed 4400rpm with supplied Low-Noise Adaptor.
BrandNoctua #ad
ManufacturerNoctua #ad
Height0.79 Inches
Length1.57 Inches
Weight2.2 Pounds
Width1.57 Inches
Part NumberNF-A4x20 PWM
ModelNF-A4x20 PWM
Warranty6 year manufacturer’s warranty

5. Noctua

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Premium Quiet Fan, 4-Pin, 5V Version 40x20mm, Brown, Noctua NF-A4x20 5V PWM

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Noctua #ad - Premium quiet fan, >150, max. Award-winning a-series design with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance.

14. 9 dba, 5v, 40x40x20 mm, 4-pin pwm, max.40x20mm size ideal for nvidia jetson nano, switches, 1u applications or replacing fans in network and storage equipment routers, NAS etc.55000 rpm, 000 h mttF. 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. Or other devices such as DVRs.
BrandNoctua #ad
ManufacturerNoctua #ad
Height0.79 Inches
Length1.57 Inches
Weight0.4 Pounds
Width1.57 Inches
Part NumberNF-A4x20 5V PWM
ModelNF-A4x20 5V PWM
Warranty6 year manufacturer’s warranty

6. Noctua

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Brown, Noctua NF-A4x10 5V, Premium Quiet Fan, 3-Pin, 5V Version 40x10mm

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Noctua #ad - Premium quiet fan, >150, 17. 9 dba, 4500 rpm, 3-pin molex, 5v, 40x40x10 mm, 000 h MTTF. Ideal replacement for noisy or broken 5v 4cm fans in 3D printers, NAS, switches, other network and storage devices, routers, DVRs, etc. Award-winning 40x10mm a-series fan with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance. 3-pin 5v version with 4500rpm, not to be used at 12V such as in PC environments. Includes anti-vibration mounts, fan screws, extension cable and OmniJoin adaptor set for connecting the fan to proprietary fan headers.
BrandNoctua #ad
ManufacturerNoctua #ad
Height0.39 Inches
Length1.57 Inches
Weight0.22 Pounds
Width1.57 Inches
Part NumberNF-A4x10 5V
ModelNF-A4x10 5V
Warranty6 year manufacturer’s warranty

7. Noctua

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Noctua NF-A4x10 5V PWM, Brown, Premium Quiet Fan with USB Power Adaptor Cable, 4-Pin, 5V Version 40x10mm

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Noctua #ad - 5v 4-pin pwm version 5000rpm maximum speed with polarity protection for 5V applications with PWM speed control. Usb power adaptor cable allows the fan to run on devices with USB host ports, power banks or USB power supplies such as those used by smartphones.

19. 6 dba, 5V, max. Award-winning 40x10mm a-series fan with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance. Includes anti-vibration mounts, fan screws, extension cable and OmniJoin adaptor set for connecting the fan to proprietary fan headers. 5000 rpm, 000 h mttF. Premium quiet fan, 40x40x10 mm, >150, 4-pin pwm, max.
BrandNoctua #ad
ManufacturerNoctua #ad
Height0.39 Inches
Length1.57 Inches
Weight0.4 Pounds
Width1.57 Inches
Part NumberNF-A4X10 5V PWM
ModelNF-A4x10 5V PWM
Warranty6 year manufacturer’s warranty

8. Noctua

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3-Pin 40x20mm, Premium Quiet Fan, Noctua NF-A4x20 FLX, Brown

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Noctua #ad - Award-winning a-series design with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance.

14. 9 dba, 3-pin molex, >150, 12v, 000 h MTTF. Premium quiet fan, 40x40x20 mm, 5000/4400/3700 rpm, max. Or other devices such as DVRs. Includes anti-vibration mounts, fan screws, extension cable and OmniJoin adaptor set for connecting the fan to proprietary fan headers. 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. 40x20mm size ideal for 1u applications or replacing fans in network and storage equipment routers, switches, NAS etc.
BrandNoctua #ad
ManufacturerNoctua #ad
Height0.79 Inches
Length1.57 Inches
Weight0.11 Pounds
Width1.57 Inches
Part NumberNF-A4x20 FLX
ModelNF-A4x20 FLX

9. Noctua

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Premium Quiet Fan, Brown, Noctua NF-A6x25 FLX, 3-Pin 60mm

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Noctua #ad - Premium quiet fan, 3000/2400/1600 rpm, 60x60x25 mm, >150, 12v, 3-pin molex, max. Includes anti-vibration mounts, low-noise & Ultra-Low-Noise Adaptors, fan screws, extension cable and 3:4-pin adaptor for powering the fan directly from the power supply.

Ideal replacement for noisy or broken 12V 6cm fans in DVRs, network and storage devices, NAS, 3D printers, etc. Award-winning 60x25mm a-series fan with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance. 19. 3 dba, 000 h mtTF. 3-pin flx version provides 3000/2400/1600rpm speed settings via Low-Noise Adaptors to fine-tune the fan for maximum airflow or near-silent operation.
BrandNoctua #ad
ManufacturerNoctua #ad
Height6 Inches
Length8.5 Inches
Weight0.44 Pounds
Width1.5 Inches
Part NumberNF-A6x25
ModelNF-A6x25
Warranty6 year manufacturer’s warranty

10. Noctua

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Premium Quiet Fan, Brown, 5V Version 40x20mm, Noctua NF-A4x20 5V, 3-Pin

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Noctua #ad - 5v 3-pin version 5000rpm for 5V-based industrial applications or replacing 5V fans in various devices. 40x20mm size ideal for 1u applications or replacing fans in network and storage equipment routers, switches, NAS etc.

Includes anti-vibration mounts, fan screws, extension cable and OmniJoin adaptor set for connecting the fan to proprietary fan headers. Premium quiet fan, 5000 rpm, 14. 9 dba, >150, 40x40x20 mm, 5v, 3-pin molex, 000 h MTTF. Award-winning a-series design with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance. Or other devices such as DVRs.
BrandNoctua #ad
ManufacturerNoctua #ad
Height1.57 Inches
Length1.57 Inches
Width0.79 Inches
Part NumberNF-A4x20 5V
ModelNF-A4x20 5V
Warranty6 year manufacturer’s warranty