NZXT F420U white three-pack, angled view with RGB lighting

NZXT F420U white three-pack, blade side view

NZXT F420U white fans installed in a build

NZXT F420U black three-pack, angled view with RGB lighting

NZXT F420U black three-pack, blade side view

F420U

420mm Ultra RGB Single-Frame Fan

$99.99

Size

120 mm 140 mm 360 mm420 mm

Color

Where to Buy

Key Specs

Dimensions (L x W x H): 420 x 140 x 25 mm
Speed: 500 – 2,400 ± 240 RPM
Airflow: 92.2 CFM per fan
Static Pressure: 5.1 mmH₂O per fan
Noise Level: 36.9 dBA per fan
LED Quantity: 96 LEDs
Power Connector: NZXT 8-pin
Warranty: 5 years

Inside the Box

F420U
Adapter Cable
Installation Accessories

Warranty & Return Policy

Warranty coverage — See NZXT warranty terms by product
Returns & exchanges — NZXT components and accessories are sold through authorized retailers. Start a return or exchange with the retailer you purchased from.
Warranty service — Submit a request to NZXT Support. Proof of purchase from an authorized NZXT retailer is required.

Resources

Manuals & Documentation

Overview

The NZXT Ultra RGB fan series delivers our most advanced lighting and cooling in a refined, modern package. Multi-zone addressable RGB across the hub, tracks, and inner bars creates dynamic, customizable effects, while precision-engineered blades and fluid dynamic bearings deliver whisper-quiet airflow under 37 dB. Available as standard 120 mm and 140 mm fans, or single-frame 360 mm and 420 mm designs that install with just four screws and one 8-pin connection.

Multi-zone addressable RGB — 32 LEDs (F120U/F140U), 96 LEDs (F360U/F420U)
Whisper-quiet operation under 37 dB at full speed
Precision-engineered blades and tight frame for high static pressure
Single-frame F360U and F420U install with four screws and one 8-pin connection
Anti-vibration corners reduce noise and resonance
60,000-hour fluid dynamic bearing
Full customization via NZXT CAM with NZXT Control Hub or motherboard
Optional 5V ARGB header for basic motherboard control

MORE LIGHT. MORE CONTROL.

Ultra RGB fans that do more than glow—they bring your build to life. Multi-zone lighting dances across your setup with depth and motion, while whisper-quiet PWM cooling keeps your system calm.

CONTROL WITH CAM

Fan curves, thermal monitoring, and RGB personalization—everything in a single interface.   Requires NZXT Control Hub or NZXT motherboard (sold separately).

OPTIONAL DIRECT MOTHERBOARD CONTROL

Connect to a 5V ARGB header for basic lighting and fan control. Check LED compatibility.

CONTROL WITH CAM

Fan curves, thermal monitoring, and RGB personalization—everything in a single interface.   Requires NZXT Control Hub or NZXT motherboard (sold separately).

OPTIONAL DIRECT MOTHERBOARD CONTROL

Connect to a 5V ARGB header for basic lighting and fan control. Check LED compatibility.

PRECISE AIRFLOW

Aerodynamic blades and a precision-engineered frame move airflow through radiators and mesh.

WHISPER-QUIET COOLING

Stays under 37 dB at full speed with fluid dynamic bearings and anti-vibration corners.

BUILT TO LAST

Premium fluid dynamic bearings rated for 60,000+ hours deliver smooth, dependable cooling.

ALL-IN-ONE DESIGN

A single-frame design replaces multiple fans for a seamless look and simpler installation. Mounts with just four screws and one connection point. Includes an adapter cable for direct motherboard connection.

Tech Specs

Dimensions

Dimensions (L x W x H): 420 x 140 x 25 mm
Weight: 647 g

Performance

Speed: 500 – 2,400 ± 240 RPM
Airflow: 92.2 CFM per fan
Static Pressure: 5.1 mmH₂O per fan
Noise Level: 36.9 dBA per fan
Speed (27 dBA): 1,700 RPM
Airflow (27 dBA): 61.73 CFM per fan
Static Pressure (27 dBA): 2.86 mmH₂O per fan
Rated Voltage: 12 V DC (Fan) / 5 V DC (RGB)
Rated Current: 1.03 A (Fan) / 1.4 A (RGB)
Input Power: 19.36 W
Power Connector: NZXT 8-pin
Bearing: Fluid Dynamic Bearing
Lifespan: 60,000 hours

Construction

Number of Blades: 7 per fan
LED Quantity: 96 LEDs
Cable Length: 1 x 600 mm
Materials: PBT, PC, rubber, PCB

Product Info

Warranty: 5 years
Model Number: RF-E42US-WA (White) / RF-E42US-BA (Black)
UPC: 810074848336 (White) / 810074848329 (Black)
EAN: 5056547208190 (White) / 5056547208183 (Black)

Frequently Asked Questions

What comes in the box with the F420U?

The F420U box contains the fan frame, an Adapter Cable and installation accessories. Three 140 mm fans are built into one frame, so you mount and wire a single piece instead of three separate fans.

Will the F420U fit a 420 mm radiator?

The F420U measures 420 x 140 x 25 mm, matching a 420 mm radiator mount in one piece. Each of its three 140 mm fans is rated at 5.1 mmH₂O of static pressure at full speed, the figure that matters for pushing air through a radiator.

How quiet can the F420U run?

At 27 dBA, each F420U fan spins at 1,700 RPM and still moves 61.73 CFM. At full speed it reaches 92.2 CFM at 36.9 dBA, with PWM control from 500 to 2,400 RPM (± 240 RPM).

How many LEDs does the F420U have, and how does it connect?

The F420U is listed with 96 LEDs and connects through a single NZXT 8-pin connector on a 600 mm cable that carries both fan power and lighting. Each fan has 7 blades.

What warranty does the F420U have?

The F420U is covered by a 5-year warranty, and its fluid dynamic bearings are rated for 60,000 hours. It comes in black (RF-E42US-BA) or white (RF-E42US-WA); use the model number to confirm the colorway on a retailer listing.