Noctua NF-A4x20 FLX 40mm x 20mm Premium PC Fan 5000 RPM, 14.9 dBA, Best Price!
Noctua NF-A4x20 FLX 40mm x 20mm 3-pin Fan
After the success of Noctua's NF-A4x10 40mm fans we are delighted to offer the 20mm wide version that offers increased static pressure performance.
Featuring advanced aerodynamic design measures such as Flow Acceleration Channels and Noctua's AAO frame, the NF-A4x20 is a highly optimised, premium-quality quiet fan in size 40 x 20mm. The FLX version provides 5000/4400/3700rpm speed settings via the supplied Low-Noise Adaptors and includes the OmniJoin Adaptor Set for easy connection to proprietary fan headers. Its superb running smoothness, reference-class SSO2 bearing and Noctua's trusted premium quality make it an elite choice for the highest demands.
Features
40 x 20mm quiet PC cooling fan
Three speed settings for full flexibility
Feature packed
Perfect for propitiatory cooling
From 5.5 CFM, 14.9 dBA at 5000 RPM
40x20mm size
Compared to Noctua's award-winning NF-A4x10, the NF-A4x20 is twice as thick, which allows for increased static pressure performance and makes the NF-A4x20 ideal for demanding applications with high flow resistance.
Flow Acceleration Channels
The NF-A4x20 impeller features suction side Flow Acceleration Channels. By speeding up the airflow at the crucial outer blade regions, this measure reduces suction side flow separation and thus leads to better efficiency and lower vortex noise.
AAO Frame
Noctua's AAO (Advanced Acoustic Optimisation) frames feature integrated anti-vibration pads as well as Noctua's proprietary Stepped Inlet Design and Inner Surface Microstructures, both of which further refine the fan's performance/noise efficiency.
Stepped Inlet Design
Noctua's Stepped Inlet Design adds turbulence to the influx in order to facilitate the transition from laminar flow to turbulent flow, which reduces tonal intake noise, improves flow attachment and increases suction capacity, especially in space-restricted environments.
Inner Surface Microstructures
With the tips of the fan blades ploughing through the boundary layer created by the Inner Surface Microstructures, flow separation from the suction side of the blades is significantly suppressed, which results in reduced blade passing noise and improved airflow and pressure efficiency.
Integrated Anti-Vibration Pads
Integrated Anti-Vibration Pads made from extra-soft silicone minimise the transmission of minute vibrations while maintaining full compatibility with all standard mounting systems and fan clips used on heatsinks.
SSO2 bearing
The NF-A4x20 features the further optimised second generation of Noctua's renowned, time-tested SSO bearing. With SSO2, the rear magnet is placed closer to the axis to provide even better stabilisation, precision and durability.
Smooth Commutation Drive 2
The latest version of Noctua's advanced Smooth Commutation Drive system ensures superb running smoothness by eliminating torque variations and switching noises. This makes the fan remarkably quiet even at very close distances.
3 speed settings for full flexibility
Providing 5000, 4400 and 3700 rpm speed settings via the supplied Low-Noise and Ultra-Low-Noise Adapters, the NF-A4x20 FLX (Flexibility) can be fine-tuned for superior airflow or maximum quietness.
OmniJoin adaptor set
Many devices featuring 40mm fans use proprietary fan headers, so the NF-A4x20 comes with Noctua's OmniJoin adaptor set. Just cut the original fan's cable, fix it to the adaptor using the supplied 3M Scotchlok connectors and you can plug the NF-A4x20 to proprietary fan headers!
Extensive cabling options
The fan's short 20cm primary cable minimises cable clutter in typical applications while the supplied 30cm extension provides extended reach when necessary. Both cables are fully sleeved and the supplied 3:4 pin adaptor allows the connection of the fan directly to the power supply.
6-year manufacturer's warranty
Noctua fans are renowned for their impeccable quality and outstanding longevity. Like all Noctua fans, the NF-A4x20 features an MTTF of more than 150.000 hours rating and comes with a full 6-year manufacturer's warranty.
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Specifications |
NF-A4x20 FLX |
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Dimensions |
40 x 40 x 20 mm |
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Screw hole spacings |
32 mm |
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Connector |
3-Pin |
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Bearing |
SSO2 |
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Blade Geometry |
A-Series with Flow Acceleration Channels |
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Frame Technology |
AAO (Advanced Acoustic Optimisation) |
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Rotational Speed (±10%) |
5000 RPM |
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Rotational Speed with L.N.A. (±10%) |
4400 RPM |
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Rotational Speed with U.L.N.A. (±10%) |
3700 RPM |
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Airflow |
5.5 CFM |
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Airflow with L.N.A. |
4.9 CFM |
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Airflow with U.L.N.A. |
4.1 CFM |
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Acoustical Noise |
14.9 dB(A) |
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Acoustical Noise with L.N.A. |
12.2 dB(A) |
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Acoustical Noise with U.L.N.A. |
8.5 dB(A) |
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Static Pressure |
2.26 mm H2O |
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Static Pressure with L.N.A. |
1.75 mm H2O |
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Static Pressure with U.L.N.A. |
1.23 mm H2O |
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Max. Input Power |
0.6 W |
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Max. Input Current |
0.05 A |
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Voltage |
12 V |
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MTBF |
> 150,000 h |
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Accessories |
Low-Noise Adaptor (L.N.A.), Ultra-Low-Noise Adaptor (U.L.N.A.), 30cm extension cable |
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EAN barcode |
9010018100112 |
About Us
We are a UK Limited, VAT registered company formed Wiltshire in August 2000. Our aim is to provide our customers with excellent, affordable products and to offer you excellent customer service and support, if the time should arise. All our stock is based in the UK in our own warehouse, some larger heavier items, likes cases and Power Supply Units may be shipped direct from UK Distributors. We are still The Largest Authorised Premium ThermalTake Reseller on eBay, we have the biggest of range ThermalTake Products in the UK and Europe. Supplying and supporting ThermalTake products for over 15 years and were upgraded to a Premium Partner by ThermalTake in 2006. Approved CoolerMaster Reseller in 2009 and one of the largest Authorised Resellers on eBay, we have been selling CoolerMaster products for over 10 years. 2012 - Approved Razer Reseller. 2012 - Approved Zalman Reseller. We were appointed UK resellers by XigmaTek in 2009, and one of the largest Authorised Resellers on eBay, we have been selling XigmaTek products for over 8 years. 2012 - Approved Gelid Reseller. 2014 - Approved Arctic Reseller.
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