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Noctua NF-A4X10 FLX 40x40x10mm 3-pin 4500 RPM Case Fan/Case Cooler

Noctua NF-A4X10 FLX 40x40x10mm 3-pin 4500 RPM Case Fan/Case Cooler

Q: This might be a dumb question, but what is the operating voltage? Don't see a rating anywhere in the description or reviews and hoping it's 12VDC.

12 volts DC. 3 pin connector but comes with a 2 pin adapter and extension cables.

Q: Have anyone used this to replace the 35 mm assist fans on an asus sabertooth z87?

I have it in my Asus Sabertooth Z170 S and it fits just fine! (just remove the two Anti-Vibration Pads in contact with the TUF Armor to be able to close the lid). Take into consideration that in my version of the Sabertooth, the assistant fan position is vertical, inside the TUF Thermal Armor, between the IO Shield and the heatsink VRM, and works as an intake fan, to blow fresh air into the motherboard. Every Sabertooth Assistant Fans are designed to work differently. I believe in your motherboard the fan is place horizontally, on Top of the TUF Thermal Armor. Also the fans needed for your Sabertooth Z87 had a mini 3 pin connector, my motherboard use 3 or 4 pin (regular size) connectors. Therefore the original assistant fan of the Sabertooth Z87 cannot be plugged in the Assist Fan 1 connector of my Sabertooth Z170 S. I know this because I was looking for the fans for my motherboard and buy the Z87 version by mistake, couldn't use it, so I buy the 40mm Noctua, and it works great! Really improved the temperature inside my case. Also my motherboard use 40mm fans. I'm not sure of the Z87 assistant fans size, but putting the two of them together, are exactly the same size, only thing adding up to the size variation, are the Noctuas silicone anti vibrations pads, that can be removed. Hope this helps even a little bit.

Q: What is the sound decible rating

http://noctua.at/en/products/fan/nf-a4x10-flx/specification 17.9

Product ID: 77270766

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Details

Product Dimensions
40L x 10W x
Brand
Noctua
Power Connector Type
3-Pin
Voltage
12 Volts
Cooling Method
Fan

💨8.2 CFM airflow

🔇17.9 dB ultra-quiet noise level

⚙️4500 RPM max speed

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Description

💨 Cool your rig, not your vibe — silent power in a compact frame!

DURABLE PRECISION - SSO2 bearing and fibre-glass reinforced PBT material guarantee long-lasting reliability.
COMPACT POWERHOUSE - Small 40x40x10mm size packs a punch with high RPM for superior cooling.
FLEXIBLE COMPATIBILITY - 3-pin connector with 3-to-2 pin adaptor and polarity protection for versatile setups.
VIBRATION FREE OPERATION - Integrated anti-vibration pads ensure silent, stable performance.
WHISPER QUIET EFFICIENCY - Advanced Flow Acceleration Channels reduce noise while maximizing airflow.

The Noctua NF-A4X10 FLX is a premium 40x40x10mm 3-pin case fan delivering up to 4500 RPM and 8.2 CFM airflow with an ultra-quiet 17.9 dB noise level. Featuring Flow Acceleration Channels and a reduced motor hub size, it maximizes cooling efficiency while minimizing noise and vibration. Its flexible cabling options and durable SSO2 bearing make it an ideal choice for professional-grade desktop cooling solutions.

Specifications

Product Dimensions	40L x 10W x 40H Millimeters
Brand	Noctua
Power Connector Type	3-Pin
Voltage	12 Volts
Cooling Method	Fan
Compatible Devices	Desktop
Noise Level	17.9 dB
Material	Fibre-glass reinforced PBT
Maximum Rotational Speed	4500 RPM
Air Flow Capacity	8.2 CMPH
UPC	163121136772 809185325669 806291857176 804066543873 842431014054 102930672934 782386476753 172302657890 132017920719 808111662861 809385174852 168141421648 851905102548
Global Trade Identification Number	04716123314691, 07123290462549, 07133363436841
Manufacturer	Noctua, Rascom Computerdistribution Ges.m.b.H. Huttengasse 71-75 A-1160 Wien Austria
Number of Items	1
Series	NF-A4x10 FLX
Colour	Brown
Item model number	NF-A4x10
Are Batteries Included	No
Included Components	Case Fan
Manufacturer	Noctua
Country of Origin	USA
Item Weight	50 g

Have a Question? See What Others Asked

what is the CFM for this fan?

This might be a dumb question, but what is the operating voltage? Don't see a rating anywhere in the description or reviews and hoping it's 12VDC.

Have anyone used this to replace the 35 mm assist fans on an asus sabertooth z87?

What is the sound decible rating

Reviews

T**R

Great product

The product is awesome and works very seamlessly.And the cooling effect is great.

1.04.2025

P**R

Nice and silent

Works Great, meets by expectations and I'd recommend this to anyone in need for a quiet and powerful 40mmx10mm Fan.

1.04.2019

V**M

Jabardast!

Great...comes with lots of accessories that you will ever see with any fan...its well engineered product! Yes a bit costly but its simply one of best fan i ever used.

17.07.2022

H**S

Noctua is finally affordable in India now

The media could not be loaded. Bought the 40mm version for my car inverter and the noise level and pitch difference was night and day the stock fan was extremely whinny and very loud it used to distract my driving but this noctua fan just makes a pleasant whoosh sound and zero whine which perfectly blends in with my car AC they were also kind enough to include a ton of adapters that let you connect this fan to anything other than PCsImpressed by its performance I am gonna noctua everything my pc and chill

20.11.2021

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