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Noctua NF-A4x10 FLX 40mm Quiet Cooling Fan 3700-4500RPM 6.6-8.2M3/H 12.9-17.9DBA 3Pin

This product can only be exchanged or replaced with the exact same item.
Noctua NF-A4x10 FLX 40mm Quiet Cooling Fan 3700-4500RPM 6.6-8.2M3/H 12.9-17.9DBA 3Pin - 1
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Noctua NF-A4x10 FLX 40mm Quiet Cooling Fan 3700-4500RPM 6.6-8.2M3/H 12.9-17.9DBA 3Pin - 77217_l.jpg Noctua NF-A4x10 FLX 40mm Quiet Cooling Fan 3700-4500RPM 6.6-8.2M3/H 12.9-17.9DBA 3Pin - 77217_1.jpg Customer Photos (0)
Reg. Price: $13.99  CAD
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   Shipping Weight:   0.2 lbs
   Part #: NF-A4x10 FLX

Features    [ Edit | History ]

Featuring advanced aerodynamic design measures such as Flow Acceleration Channels and Noctua's AAO frame, the NF-A4x10 FLX is a highly optimised, premium quality quiet fan in 40x10mm 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, a Low-Noise Adaptor and OmniJoin Adaptor Set as well as 6 years manufacturer's warranty, the NF-A4x10 is a premium choice for the highest demands.
Quick Specs:
Air Flow 1 x 4500 m³/h
Application/Usage Case
Package Contents
  • NF-A4x10 FLX Cooling Fan
  • Low-Noise Adaptor (L.N.A.)
  • 3-pin to 2-pin Adapter
  • OmniJoin Adapter Set
  • 30cm Extension Cable
  • 4 x Vibration-Compensators
  • 4 x Fan Screws
Connectors 3-pin
Fan Diameter 1 x 40 mm
Limited Warranty 6 Year
Weight (Approximate) 1.35 lb
Fan Speed 1 x 4500 rpm
Fan Bearing Type SSO2 Bearing
Height 0.4"
Width 1.6"
Depth 1.6"
Number of Fans 1

Specifications    [ Edit | History ]
Fan Information  
     Air Flow: 1 x 4500 m³/h
     Fan Bearing Type: SSO2 Bearing
     Fan Speed: 1 x 4500 rpm
     Number of Fans: 1
General Information  
     Brand Name: Noctua
     Manufacturer: Noctua
     Manufacturer Part Number: NF-A4x10 FLX
     Manufacturer Website Address:
     Product Model: NF-A4x10 FLX
     Product Name: NF-A4x10 FLX Cooling Fan
     Product Type: Cooling Fan
     Connectors: 3-pin
     Application/Usage: Case
     Package Contents:
  • NF-A4x10 FLX Cooling Fan
  • Low-Noise Adaptor (L.N.A.)
  • 3-pin to 2-pin Adapter
  • OmniJoin Adapter Set
  • 30cm Extension Cable
  • 4 x Vibration-Compensators
  • 4 x Fan Screws

Physical Characteristics  
     Depth: 1.6"
     Fan Diameter: 1 x 40 mm
     Height: 0.4"
     Weight (Approximate): 1.35 lb
     Width: 1.6"
Power Description  
     Input Voltage: 12 V DC
     Limited Warranty: 6 Year

Noctua NF-A4x10 FLX Customer Reviews

Product reviews on are screened for relevance and inappropriate content. Reviews may contain inaccurate information about the product. If there is a discrepancy, please use the Flag this Review link located beside each review. Reviews are not an endorsement expressed by, but opinions from customers based on their own experience with a product. We do not recommend you make purchasing decisions based on facts or opinions expressed regarding Noctua NF-A4x10 FLX reviews.
Experience: 1 Days
 Verified Owner
connectors, performance, silence
love these fans, bought 2 to cool chipset for a fx970 board i use in an htpc (so not much cooling) and to replace the stick fan on a raid card which was way too loud. keeps things really quiet and cool and the option to replace connectors is exactly what all these mini fans need, it's perfect.

The Great Gazoo™
Experience: 45 Days
 Verified Owner
Rubber corners on edges of fan
Sometimes won't startup with lower voltages
Color is distinctively Noctua, but terrible looking
Often small equipment comes with 40mm fans to get some airflow moving. That is the case with my DVICO media player and even my lights on the aquarium. The stock fans on both pieces of equipment were loud and really didn't move much air.

Replacing them with these fans took care of both issues. My media player doesn't seem to provide a lot of voltage when starting up and the fan doesn't start spinning right away. It eventually does start up - I think the media player ramps up voltage based on temps.

Dalek Phalm
Experience: 2 Weeks
 Verified Owner
-Very Quiet
-Runs very cool
-A bit pricey
I recently bought this fan to replace the PSU fan in a SAS Storage Expander I have in my living room. I needed something super quiet, as the stock fan ran at 10K RPM, and sounded like a hair dryer at full speed.

This fan delivered. It's essentially silent (I cannot hear it without opening the case up), and still pumps a good amount of air through the system.

There are not a lot of 40mm fans out there to choose from, so I was exceptionally pleased to find that Noctua had one available. Noctua make some of the very best fans of any size.

This fan is a bit pricey, but it's worth the cost to get the best performance without compromising on audible noise levels. I highly recommend this fan to anyone who needs a silent 40mm fan.

Experience: 30 Days
great fans with unusual colors
hard to find pricematch
very nice. silent fans moves enough air to cool chipsets and anything else needing a 40mm fan.

Experience: 1 Weeks
 Verified Owner
Quiet, Keeps things cool.
Replaced rear stock 30mm fan on my Asus sabertooth Z77 board with this fan. The stock fan's were driving me nuts, can always hear them whining. Once I replaced the rear with one of these I cant hear a thing anymore. Does it's job and very quiet at it. Had to modify the mounting bracket for the 40mm fan that came with motherboard for some reason the fan wouldn't fit just right.
Would highly recommend!

This review was modfied by poster @ 04-11-13 10:48 AM

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