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F420U
420mm Ultra RGB Single-Frame Fan
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
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.