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NZXT F420 RGB Core 420mm RGB Black 3 Fans
NZXT F420 RGB Core is a 420mm single-frame RGB fan unit that combines three 140mm fans into one housing, finished in black. Each fan delivers up to 91.83 CFM airflow and 3.2 mmH₂O static pressure at 500–2,000 RPM. The pack uses fluid dynamic bearings rated for 60,000 hours and includes eight individually addressable RGB LEDs per fan hub. Available at Alfrensia for 3,499 EGP.
⚡ Engineering Highlights at a Glance:
- Single-Frame 420mm Design: Three 140mm fans share one housing, which simplifies installation and reduces cable clutter.
- Balanced Airflow and Pressure: Up to 91.83 CFM and 3.2 mmH₂O per fan at 2,000 RPM, suitable for intake, exhaust, and 420mm radiators.
- Fluid Dynamic Bearings: Rated for 60,000 hours of quiet, stable operation across the speed range.
- Eight RGB LEDs per Fan: Individually addressable LEDs diffused through semi-translucent blades and side windows for gradient effects.
- PWM Speed Control: Fans adjust speed based on system temperature when connected to a PWM header or controller.
- Anti-Vibration Corners: Rubber corners dampen vibration noise at any speed.
- Dual Connectivity: Use the 8-pin connector with an NZXT controller for CAM control, or the included splitter cable for any motherboard’s 5V ARGB header.
Who is the NZXT F420 RGB Core For?
Expert Advice & Build Considerations
Connecting and Controlling the Fans
The F420 RGB Core uses an 8-pin connector for PWM and RGB. To control fan speed and lighting through NZXT CAM, connect it to an NZXT controller (sold separately) or a compatible NZXT motherboard. If you do not have one, use the included splitter cable to connect to any motherboard’s 5V ARGB header and a PWM fan header. In that case, use your motherboard’s software or BIOS for fan speed and lighting control. Note that Zero RPM Mode requires an NZXT controller or NZXT motherboard.
Case Fit and Mounting
The single-frame dimensions are 420 x 140 x 25mm, so your case needs a 420mm fan or radiator mount on the top, front, or side. Because it mounts as a single unit, confirm that your mounting holes are spaced for 420mm fans and that the fan cables reach your controller or motherboard header. The pack weighs 632 g, which most 420mm mounting points support without extra bracing.
Noise and Fan Curves
At full speed, each fan reaches 34.5 dBA, which is audible but moderate for a 140mm fan. Use PWM control to set a fan curve that ramps up under sustained load and stays quiet at idle. The anti-vibration rubber corners reduce vibration noise, but keep the frame firmly screwed down to avoid rattling. Clean the blades with a soft brush or compressed air every few months to maintain airflow and keep noise down.
Technical Specifications
| Model Name | F420 RGB Core (Black) |
| Brand | NZXT |
| SKU / MPN | RF-U42HF-B1 |
| EAN / UPC | 810074844581 |
| Product Type | Case fan pack (420mm single-frame, 3 x 140mm fans) |
| Color | Black |
| Dimensions | 420 x 140 x 25 mm |
| Weight | 632 g |
| Speed | 500 – 2,000 ± 200 RPM |
| Airflow | 91.83 CFM per fan |
| Static Pressure | 3.2 mmH₂O per fan |
| Noise Level | 34.5 dBA per fan |
| Bearing | Fluid Dynamic Bearing |
| Lifespan | 60,000 hours |
| LED Quantity | 8 individually addressable RGB LEDs per fan |
| Power Connector | 8-pin for PWM & RGB |
| Control Options | NZXT CAM via NZXT controller (sold separately) or motherboard 5V ARGB header via included splitter cable |
| Included Accessories | F420 RGB Core fan unit | Splitter cable | Installation accessories |
| Warranty | 5 Years Local Alfrensia Warranty |
Expert Recommendation: Getting the Most from the F420 RGB Core
Confirm that your case or radiator has a 420mm mount and that the mounting holes are spaced for 140mm fans. The single-frame design mounts as one unit, so measure the mounting points and space above and below the frame before ordering.
Decide how you want to control the fans before you build. If you want CAM control for fan speed and RGB, plan to use an NZXT controller or a compatible NZXT motherboard; otherwise, use the included splitter cable with your motherboard’s 5V ARGB header and a PWM fan header.
Set a fan curve that ramps up under sustained load and stays quiet at idle. The 500–2,000 RPM range gives you room to balance airflow and noise; at full speed, each fan reaches 34.5 dBA, which is audible but moderate for a 140mm fan.
Because the fans use fluid dynamic bearings rated for 60,000 hours, keep the frame firmly screwed down to prevent rattling and check the blades periodically for dust buildup. Clean the blades with a soft brush or compressed air to maintain airflow and reduce noise over time.
Frequently Asked Questions
Will the F420 RGB Core fit a 420mm radiator?
Yes. The unit measures 420 x 140 x 25mm, which matches standard 420mm radiator spacing. Confirm that your case or radiator has a 420mm mount and that the fan cables reach your controller or motherboard header before installing.
How fast and how loud are the F420 RGB Core fans?
The fans run between 500 and 2,000 ± 200 RPM, delivering up to 91.83 CFM and 3.2 mmH₂O per fan. At full speed, each fan reaches 34.5 dBA. Use PWM control to keep noise down at idle and ramp up under load.
How do I connect the F420 RGB Core?
The unit uses an 8-pin connector for PWM and RGB. To use NZXT CAM for fan speed and lighting, connect it to an NZXT controller or a compatible NZXT motherboard (sold separately). If you do not have one, use the included splitter cable to connect to any motherboard’s 5V ARGB header and a PWM fan header.
Do I need an NZXT controller to use the fans?
No. The fans can run through your motherboard using the included splitter cable. However, CAM control, Zero RPM Mode, and some lighting effects require an NZXT controller or NZXT motherboard, which is not included in the box. Plan accordingly if you want full CAM integration.
What is included in the box?
The package includes the F420 RGB Core single-frame fan unit, a splitter cable, and installation accessories. No NZXT controller is included. The unit carries a 5-year warranty.
















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