Noctua nf a4x20 flx premium quiet fan 3 pin 40x20mm brown in comparison

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Last updated on 19.09.2026

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Noctua NF-A20 5V PWM, High-Performance Quiet Fan 200mm | High Airflow Low Noise, 5V, 30mm Thick Fan, for Ventilation and Electronics Cooling, USB-A Power Adaptor, 800rpm 4-Pin PWM

Premium quiet fan, 200x200x30 mm, 5V, 4-pin PWM, max. 800 RPM, max. 18.1 dB(A), >150,000 h MTTF Award-winning 200x30mm A-series design with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance 5V 4-pin PWM version (800rpm 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 Includes anti-vibration mounts, fan screws, extension cable and OmniJoin adaptor set for connection to proprietary fan headers

£ 30.95 free shipping

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Noctua NF-A12x25 FLX, High-Performance Quiet Fan 120mm | High Airflow & Static Pressure Low Noise 25mm Thick Fan for Heatsinks and Radiators, 3 Speed Settings 2000/1700/1350rpm 3-Pin

Premium quiet fan, 120x120x25mm, 12V, 3-pin Molex, 2000/1700/1350 RPM, max. 22.6 dB(A), >150,000 h MTTF Next-gen A-series design combines high airflow and high static pressure performance, ideal both as a case fan and for CPU coolers, watercooling radiators and AIO liquid cooling systems State-of-the-art engineering (AAO frame, Flow Acceleration Channels, record tight 0.5mm tip clearance) and construction (Sterrox LCP material, metal-reinforced hub, metal bearing shell, etc.) 3-pin FLX version provides 2000/1700/1350rpm speed settings via Low-Noise Adaptors to fine-tune the fan for maximum airflow or near-silent operation Includes anti-vibration mounts, radiator gasket, fan screws, extension cable and 3:4-pin adaptor for powering the fan directly from the power supply

£ 28.95 free shipping

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Noctua NF-A4x20 5V PWM PC Case Fan 40 x 40 x 20 mm Brown

Noctua NF-A4x20 5V PWM PC Case Fan 40 x 40 x 20 mm Brown Contents: 1 item

£ 34.74 free shipping

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Noctua NF-F12 PWM, High-Performance Quiet Fan 120mm | High Static Pressure Low Noise 25mm Thick Fan with Focused Flow, Rich Accessory Kit, 1500rpm 4-Pin PWM

Premium quiet fan, 120x120x25 mm, 12V, 4-pin PWM, max. 1500 RPM, max. 22.4 dB(A), >150,000 h MTTF Award-winning 120x25mm fan with Focused Flow frame for high static pressure and superior quiet cooling performance Ideal for CPU heatsinks (e.g. Noctua NH-U12(S) series) and water cooling radiators, perfect replacement fan for loud all-in-one (AIO) coolers 4-pin PWM version for automatic speed control via 4-pin PWM fan headers, broad 300-1500rpm speed range (1200rpm max. with supplied Low-Noise Adaptor) Includes anti-vibration mounts, fan screws, Low-Noise Adaptor, extension cable and y-cable for running two PWM fans on the same header

£ 20.99

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Noctua NF-A4x10 24V PWM, High-Performance Quiet Fan 40mm | High Airflow Low Noise 24V, 10mm Slim Fan, for Ventilation and Electronics Cooling, Ideal for 3D Printers, 5000rpm 4-Pin PWM

24V version of Noctua’s award-winning quiet 40x10mm fan, ideal upgrade/replacement 4cm fan for 3D printing (hot end or part cooling) and other 24V applications 5000rpm max., 4-pin PWM connector for automatic speed control via 4-pin PWM fan headers (maximum airflow performance when required, near-silent at lower speeds) NA-AC9 adaptor cable for popular 3D printers with JST XHP-2 2.5mm headers (e.g. Creality Ender 3 & CR-10, Anycubic Mega), ideal to improve printing performance and quietness of operation Includes anti-vibration mounts, fan screws, extension cable, Low-Noise Adaptor (LNA), NA-AC9 adaptor and OmniJoin adaptor set for connecting the fan to proprietary fan headers Trusted Noctua quality with premium-grade SSO2 bearing (MTTF > 150,000 h), safety certifications from UL and TÜV, protected against reverse polarity, over voltage and over current (short-circuits)

£ 13.90 free shipping

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Noctua NF-A9 PWM, High-Performance Quiet Fan 92mm | High Airflow, Low Noise, 25mm Thick Fan, for PC and Electronics Cooling, Rich Accessory Kit, 2000rpm 4-Pin PWM

Premium quiet fan, 92x92x25 mm, 12V, 4-pin PWM, max. 2000 RPM, max. 22.8 dB(A), >150,000 h MTTF Award-winning 92x25mm A-series fan with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance Ideal for 9cm CPU coolers (e.g. Noctua NH-U9(S) & NH-D9L series), compact PC cases (HTPC, ITX, Small Form Factor), replacement fan for NAS and other devices, etc. 4-pin PWM version for automatic speed control via 4-pin PWM fan headers, broad 400-2000rpm speed range (1550rpm max. with supplied Low-Noise Adaptor) Includes anti-vibration mounts, fan screws, Low-Noise Adaptor, extension cable and y-cable for running two PWM fans on the same header

£ 16.99

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Noctua NF-A20 PWM chromax.black.swap, High-Performance Quiet Fan 200mm | High Airflow, Low Noise, 30mm Thick Fan, for PC and Electronics Cooling, Customisable Colour Pads, 800rpm 4-Pin PWM

Premium quiet fan, 200x200x30 mm, 12V, 4-pin PWM, max. 800 RPM, max. 18.1 dB(A), >150,000 h MTTF Award-winning 200x30mm A-series fan with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance Large 20cm diameter for high airflow at extremely low noise levels; 154x154, 170x170 & 110x180mm mounting holes for broad compatibility with various PC cases 4-pin PWM version for automatic speed control via 4-pin PWM motherboard fan headers, 350-800rpm speed range chromax.black.swap edition with all-black design and swappable red, black, white, blue, yellow and green anti-vibration pads for colour-customising (4 pads of each colour)

£ 34.95 free shipping

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5% off

Noctua NF-S12A PWM, High-Performance Quiet Fan 120mm | High Airflow, Low Noise, 25mm Thick Fan, for PC and Electronics Cooling, Rich Accessory Kit, 1200rpm 3-Pin

Premium quiet fan, 120x120x25 mm, 12V, 4-pin PWM, max. 1200 RPM, max. 17.8 dB(A), >150,000 h MTTF Award-winning third-gen 120x25mm S12 fan with Anti-Stall Knobs and Advanced Acoustic Optimisation frame for superior quiet cooling performance Airflow-optimised design for highly efficient, near-silent ventilation of PC cases and other chassis (intake & exhaust), cabinet cooling, etc. 4-pin PWM version for automatic speed control via 4-pin PWM fan headers, broad 300-1200rpm speed range (900rpm max. with supplied Low-Noise Adaptor) Includes anti-vibration mounts, fan screws, Low-Noise Adaptor, extension cable and y-cable for running two PWM fans on the same header

£ 20.99

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13% off

Noctua NF-A4x20 PWM Ventilateur Silencieux de qualité supérieure 40 mm

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, y-cable and OmniJoin adaptor set for connecting the fan to proprietary fan headers Trusted Noctua quality backed up with 6-year manufacturer's

£ 13.95 free shipping

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Noctua NF-A4x20 FLX, Premium Quiet Fan, 3-Pin (40x20mm, Brown) (Pack of 2)

Noctua

£ 38.48

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12% off

Noctua NF-A6x25 FLX, High-Performance Quiet Fan 60mm | High Airflow, Low Noise, 25mm Thick, for PC and Electronics Cooling, 3 Speed Settings 3000/2400/1600rpm 3-Pin

Premium quiet fan, 60x60x25 mm, 12V, 3-pin Molex, 3000/2400/1600 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 Ideal replacement for noisy or broken 12V 6cm fans in DVRs, NAS, network and storage devices, 3D printers, etc. 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 Includes anti-vibration mounts, fan screws, Low-Noise & Ultra-Low-Noise Adaptors, extension cable and 3:4-pin adaptor for powering the fan directly from the power supply

£ 15.99 free shipping

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Noctua NF-A14x25 G2 PWM Sx2-PP, High-Performance Quiet Fans 2x140mm | High Airflow & Static Pressure, Low-Noise 25mm Thick Fans, Speed-Offset Dual Kit, for Coolers/Radiators/Cases, 1500rpm 4-Pin

Dedicated dual fan set with two NF-A14x25 G2 PWM 140x25mm fans that are slightly off-set in speed (+/- ~25rpm) in order to avoid undesired acoustic interaction phenomena State-of-the-art engineering (Progressive-Bend impeller with winglets and Centrifugal Turbulator, Flow Acceleration Channels, AAO frame) and construction (Sterrox LCP, ultra-tight tip clearance) Ideal choice for push-pull applications as well as situations where two fans are operating side by side (280mm water cooling radiators, case intake or exhaust fans, etc.) Includes anti-vibration mounts, anti-vibration gaskets for tighter seal on radiators, fan screws, Low-Noise Adaptors (LNA), extension cables and y-cable for running two fans on the same header Trusted Noctua quality with premium-grade SSO2 bearing (MTTF > 150,000 h), safety certifications from UL and TÜV, protected against reverse polarity, over voltage and over current (short-circuits)

£ 63.90 free shipping

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Noctua nf a4x20 flx premium quiet fan 3 pin 40x20mm brown in comparison

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