Noctua Nf-a4x20 PWM 40mm X 20mm 4-pin Fan

5.05.0 out of 5 stars

10 product ratings

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7 reviews

by valpar_man12 May, 2020

Superb cooling fans.

At first, I didn't believe the 'hype' about these fans being 'silent'. I've used fans for many years now and many of them confess to being quite. These Noctua fans take it to a different level.
Moving air is inherently noisy no matter which way you look at it, but those people in R&D need a clap!
I've exchanged all my NOISY fans in my 3d printer and now, i could probably run a print job in a library !!
The price seems 'steep' for a small 40mm fan, but my word they are outstanding.
Also, included in the price you get all the mounting kit you could ever need, along with an abundant array of cables.
Well done Noctua.Read full review

Verified purchase: Yes • Condition: new • Sold by: extreme-hardware

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by talcyon16 Aug, 2017

Very quiet replacement fan

I used this to replace a fan in my Creality CR-10 controller box. Now I need to get a replacement fan for the hotend, as the box no longer sounds like a jet engine.

Verified purchase: Yes • Condition: new • Sold by: uk_noctuashop

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by baubstae17 Feb, 2021

Made my 3D printer quiet

Bought for a 3D printer which had loud fans. These are hugely expensive, but hugely silent, especially if you use the silent adapter. Worth it for me, I hate loud fan noise.

Verified purchase: Yes • Condition: new • Sold by: extreme-hardware

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by ospreygozo27 May, 2020

Pricey, but does its job

It is pricey, but it does its job perfectly. My 3D printer is a lot quieter now. The product comes nicely packaged and has a few cabling accessories for different connecting options. Got a similar one on my Octopi that has been running non stop for more than a year without issue.Read full review