Noctua NF-A6x25 FLX Quiet Computer Cooling 60mm Fan

$ 16.95

Noctua NF-A6x25 FLX Quiet Computer Cooling 60mm Fan.

Featuring advanced aerodynamic design measures such as Flow Acceleration Channels and Noctua’s AAO frame, the NF-A6x25 FLX is a highly optimized, premium quality quiet fan in 60x25mm size. Smooth Commutation Drive technology and Noctua’s reference class SSO2 bearings guarantee superb running smoothness and excellent long-term stability. Topped off with modular cabling, Low-Noise Adaptors and 6 years manufacturer’s warranty, the NF-A6x25 is a premium choice for the highest demands.

Flow Acceleration Channels
The NF-A6x25 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. button

Varying Angular Distance Reduced Motor Hub Size
Thanks to its streamlined, compact motor design, the NF-A6x25’s motor hub is smaller than with conventional 6cm fans. This allows for more blade surface area and thus contributes to the NF-A6x25’s superior airflow and pressure performance.

Heptaperf AAO Frame
Noctua’s AAO (Advanced Acoustic Optimization) 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. button

Stepped Inlet Design 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. button

Inner Surface Microstructures 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. button

Integrated Anti-Vibration Integrated Anti-Vibration Pads
Integrated Anti-Vibration Pads made from extra-soft silicone minimize the transmission of minute vibrations while maintaining full compatibility with all standard mounting systems and fan clips used on heatsinks.

SSO2 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 NF-A6x25 remarkably quiet even at very close distance. button

SSO2 SSO2 Bearing
The NF-A6x25 features the further optimized 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 stabilization, precision and durability. button

LNA 3 speed settings for full flexibility
Providing 3000, 2400 and 1600 rpm speed settings via the supplied Low-Noise and Ultra-Low-Noise Adapters, the NF-A6x25 FLX (Flexibility) can be fine-tuned for superior airflow or maximum quietness.

Cabling Options Extensive Cabling Options
The fan’s short 20cm primary cable minimizes 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 to connect the fan directly to the power supply.

Warranty 6 years manufacturer’s warranty
Noctua fans are renowned for their impeccable quality and outstanding longevity. Like all Noctua fans, the NF-A6x25 features an MTBF of more than 150.000 hours rating and comes with a full 6 years manufacturer’s warranty.


Size 60x60x25 mm
Connector 3-pin
Bearing SSO2
Blade Geometry A-Series with Flow Acceleration Channels
Frame Technology AAO (Advanced Acoustic Optimisation)
Rotational Speed (+/- 10%) 3000 RPM
Rotational Speed with L.N.A. (+/- 10%) 2400 RPM
Rotational Speed with U.L.N.A. (+/- 10%) 1600 RPM
Airflow 29,2 m³/h
Airflow with L.N.A. 23,5 m³/h
Airflow with U.L.N.A. 16,7 m³/h
Acoustical Noise 19,3 dB(A)
Acoustical Noise with L.N.A. 14,5 dB(A)
Acoustical Noise with U.L.N.A. 8,2 dB(A)
Static Pressure 2,18 mm H2O
Static Pressure with L.N.A. 1,41 mm H2O
Static Pressure with U.L.N.A. 0,61 mm H2O
Max. Input Power 1,44 W
Max. Input Current 0,12 A
Voltage 12 V
MTBF > 150.000 h
Included in Box:
Low-Noise Adapter (L.N.A.)
Ultra-Low-Noise Adapter (U.L.N.A.)
3:4-Pin Adaptor
30cm Extension Cable
4 Vibration-Compensators
4 Fan Screws
Warranty 6 years

upc 842431014061

This is a condensed version of our shipping and returns policy, to see all the details including our RMA form please go to either of the following links
Domestic Shipping Information (US and Canada)


*Most orders are processed within 24 hours and are checked frequently Monday - Friday. Orders that placed by 2:00PM PST are usually filled the same day. Some items may contain language with additional processing times. You will be contacted if any items you ordered are no longer in stock.

Shipping Times: UPS Map of Times in Transit Click here  First-Class mail can take 2-7 business days and Priority Mail usually takes 1-4 business days.
95%+ of our items ship out of our local warehouse near Seattle, occasionally we'll have to ship from Oregon, California or New Jersey.

Canadian Customers: There are two ways of shipping to Canada through our website.
First Class Package International & Priority Mail International.
Delivery times for Canadian orders can vary due to International restrictions and customs regulations. Most orders are delivered in 5-14 business days but can take longer (21-45 days) during heavy shipping seasons or in the event of a customs hold which is rare

Military: As a courtesy to our Military personal we will ship by US postal service to an APO, DPO or FPO address. Be advised that US Postal Costs on large orders can be more expensive then comparable UPS shipping. 

Will Call pickup: Purchase on line and select "Will Call" as the shipping method and we'll email you when it is ready for pickup (usually next day). 
Note: Not all our items are warehoused locally and available for Will Call, if there any items on your order not available we will contact you asap
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Special Delivery Instructions: We cannot give any carrier specific information on where to put your packages or whether to hold/require or not require a signature, you must contact the carrier directly after you receive a tracking or confirmation number.

Tracking: Tracking information will be sent to you as soon as it is available, occasionally there is a 24-72 hour delay in sending tracking if any item(s) had to be shipped from an alternate location.
Note: Tracking numbers will be sent you through an automated e-mail system, the email you submit on your order is the email address you will receive your tracking number .

International Shipping

We offer shipping to a select number of International Countries using UPS and USPS, if you do not see your country listed in the shipping dropdown feel free to contact us.

Whether for refund or replacement please use the RMA form at the bottom of this page for all, if you cannot find your order number or have questions send us a message or give us a call through our contact form

For Refund
Our return period for a refund is 30 days from the date of delivery.
To be eligible for a refund, your item must be in new sellable condition and with any original packaging.

For Replacement
All Coolerguy(s), CG and Cabcool branded items come with a 3 year replacement warranty, all other brands we will replace within 30 days after which you must contact the manufacturer. 

Several types of goods are exempt from being returned
Liquid / Water Cooling systems and related items are subject to the terms and conditions of the manufacturer.
Their returns handled direct, if you need additional information on the warranty or help in contacting them let us know.
Additional non-returnable items:
Gift cards