Noctua NF-A4x20 PMW 静音ファン 40mm

Q: would anyone recommend this fan for a 3d printer hontend/part cooling fan?

Yes, we'd recommend using this fan for your 3d printer. (Please note that this is a 12V DC fan.)

Q: What is de difference between noctua nf-a4x20 pwm and noctua nf-a4x20 flx?

one fan is pwm controllable (pwm), the other is not (flx). PWM controlling: https://en.wikipedia.org/wiki/Computer_fan_control

Product ID: 728787452

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Details

Product Dimensions
40L x 40W x mm
Brand
Noctua
Power Connector Type
4-Pin
Voltage
12 Volts
Cooling Method
Air
Compatible Devices
Server

⏳>150,000h MTTF reliability

🔇Ultra-quiet 14.9 dB(A)

⚙️5000 RPM max speed

Frequently Bought Together

Noctua NF-A4x20 PWM, Premium Quiet Fan, 4-Pin (40x20mm, Brown)

Noctua NF-A4x10 FLX, Premium Quiet Fan, 3-Pin (40x10mm, Brown)

Noctua NF-A8 PWM, Premium Quiet Fan, 4-Pin (80mm, Brown)

Description

🌀 Silent power in a compact form – cool smarter, not louder!

BUILT TO LAST - Engineered for endurance with over 150,000 hours mean time to failure, ensuring long-term reliability.
COMPACT YET MIGHTY - Slim 40x40x20mm size fits tight spaces like 1U servers and NAS devices without compromising airflow.
WHISPER QUIET POWER - Experience premium cooling with noise levels as low as 14.9 dB(A), perfect for focused workspaces.
PRECISION PWM CONTROL - 4-pin PWM allows seamless automatic speed adjustments, balancing performance and silence effortlessly.
VIBRATION FREE INSTALLATION - Includes anti-vibration mounts and versatile adapters for a secure, silent setup that blends into your tech ecosystem.

The Noctua NF-A4x20 PMW is a premium 40mm quiet fan designed for professional-grade cooling in compact devices like 1U servers, NAS, and networking gear. Featuring a max speed of 5000 RPM with ultra-low noise at 14.9 dB(A), advanced acoustic optimization, and a robust lifespan exceeding 150,000 hours, it delivers reliable, whisper-quiet airflow. Its 4-pin PWM control enables dynamic speed adjustment, while included anti-vibration mounts and adapters ensure easy, silent installation.