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Case Fan

Noctua NF-A4x20 PWM 5.53 CFM 40 mm Fan

(6 Ratings, 5.0 Average)

Prices

Merchant Base Promo Shipping Tax Availability Total
$18.95 In stock $18.95+ Buy
$21.11 Free two-day shipping with Amazon Prime In stock $21.11 Buy
( 4 new from $21.11 . Last updated 11 minutes ago. )

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Specifications

Manufacturer

Noctua

Part #

NF-A4x20 PWM

Manufacturer

Noctua

Size

40 mm

Color

Brown

RPM

1200 - 5000 RPM

Airflow

4.89 - 5.53 CFM

Noise Level

12.2 - 14.9 dB

PWM (4-Pin)

Yes

LED

None

Static Pressure

2.26 mmH₂O

Price History

    Reviews

    Unaccounted4
    • 27 points
    • 3 months ago

    from completed build SteamBox 360 Mk.II

    It's tiny, it looks like it came straight out of an old hearing aid, but you can't argue with the results. This one fan alone manage to take care of all the extra heat the HDPlex 400W DC-ATX generates. And it did it with very little noise, which is nice!

    angelir74
    • 13 points
    • 6 months ago

    Two of these mounted as exhaust for my GPU are probably my favorite thing to look at in my PC. I love how much hot air you can feel being exhausted through the back of my case. Lucky these Noctua silicone anti-vibration fan mounts are a thing. You can mount them anywhere the mounts fit. Would buy again.

    Pauluxav
    • 10 points
    • 17 months ago

    from completed build Wee beastie

    Tiny, but help airflow in this case.

    macdiva524
    • 4 points
    • 20 months ago

    from completed build "Bad Wolf"/ First Build Gaming PC

    Actually have the thinner versions of this fan! I’ve placed one over the VRMs near the CPU and one over the M.2/PCH cover to help spot cool. Not good looking! Actually painted the puke brown with black acrylic paint using a brush. Can’t take apart Noctua’s to spray paint. Although I did try. But it takes a lot of masking, plus these small fans are just too tiny to mask and spray paint properly. Like I said I ended up brushing on the paint.

    Dem0nflare
    • 4 points
    • 17 months ago

    from completed build Hadron Air +

    Used this fan in the U1 psu and after messing up stripping the cords i realized that the omi connector it comes with is meant for exactly that. cut the tips, stick the cords in, smash connector and you got a silent psu.

    Builds Using This Part

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