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Black 240mm dual-fan unit with RGB LEDs and translucent blades

NZXT

NZXT RF-U24HF-B1 240mm dual case fan 500-2400 RPM 75.12 CFM 30 dBA

SKU CH-JCYA-6D0Z1 MPN RF-U24HF-B1

240 mm dual-fan unit with RGB lighting, fluid-dynamic bearings and a 500-2400 RPM range delivering 75.12 CFM at 30 dBA

  • Fan size240 mm
  • LED lightingRGB
  • Bearing designFluid Dynamic Bearing
  • Rotational speed500–2400 +/- 250 RPM per fan
  • Airflow rate75.12 CFM per fan
  • Operating noise30 dBA per fan

Fan Size 240mm

  • Dual 240mm fans deliver 75.12 CFM each for strong case airflow
  • Fluid dynamic bearings and 30 dBA keep operation quiet at load
  • 500 to 2400 RPM range with Zero RPM mode adapts to thermal needs
  • Single-frame design with one 8-pin cable simplifies installation and cable routing
  • Eight RGB LEDs per fan light semi-translucent blades for vivid illumination

240mm dual-fan RGB unit

The NZXT RF-U24HF-B1 combines two 240mm fans in a single frame with RGB LEDs on semi-translucent blades. It targets builders who want simplified cable routing and synchronised lighting through NZXT CAM software or a motherboard header. The fluid dynamic bearings support a Zero RPM mode for silent idle operation. Buyers who need individual fan placement or non-RGB variants should look elsewhere.

75.12 CFM airflow at 30 dBA

Each fan delivers 75.12 CFM and 3.3 mm H2O static pressure across a 500 to 2400 RPM range with a ±250 RPM tolerance. The minimal blade-to-edge gap is designed to balance airflow and pressure for radiator or case mounting. Headroom exists for high-heat loads at the upper RPM band, while the lower bound allows near-silent running. The 26mm thickness may limit clearance in compact chassis.

Fluid dynamic bearings and 8-pin control

The 8-pin connector carries both PWM and RGB signals, reducing cable count to one 300mm fan lead and one 100mm RGB lead. Zero RPM mode stops the fans completely at low temperatures, eliminating noise entirely. At typical speeds the unit runs at 30 dBA per fan, rising only under sustained load. A separate NZXT RGB & Fan Controller or compatible motherboard is required for full software control.

How it compares

Measured against everything we stock in PC Cooling Fans, at today’s prices. Recalculated every night.

Price $30.99
Pricier than about 76% of the 8,339 comparable items (median $19.99).
Fan size 240 mm
Higher than about 94% of the 1,114 comparable items (median 120 mm).

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Specifications

Product
Brand nameNZXT
Product lineF240 RGB CORE
Model nameRF-U24HF-B1
Part numberRF-U24HF-B1
Product typeCase Fan
Product colorBlack
Performance
Rotational speed500–2400 +/- 250 RPM per fan
Airflow rate75.12 CFM per fan
Air pressure rating3.3 mm H2O per fan
Power
Power input connector8-pin for PWM & RGB
Size & build
Fan size240 mm
Bearing designFluid Dynamic Bearing
Number of fans2 Fans
Fan depth26 mm
Product dimensions240 × 120 × 26 mm
Shipping weight0.45 kg
Package size286 × 127 × 38 mm
In the box
In the box4-pin PWM Fan Cable - 1 × 300 mm
5 V RGB & 4-pin NZXT RGB Cable - 1 × 100 mm
Environment & compliance
Operating noise30 dBA per fan
More details
LED lightingRGB

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Questions about this item

Will the 240 mm single-frame unit fit alongside my existing 120 mm fans without blocking RAM slots?

The frame measures 240 mm long by 120 mm wide and 26 mm thick, so it occupies the same footprint as two standard 120 mm fans and should clear most RAM heatsinks.

How can I confirm the fans are running at the rated 500 to 2400 RPM range after installation?

Connect the 4-pin PWM cable to a motherboard header or NZXT controller, then monitor RPM in BIOS or CAM software; the fans should report speeds within 500–2400 ±250 RPM.

Which cables are included and what must I purchase separately to run both PWM and RGB?

The box includes a 300 mm 4-pin PWM fan cable and a 100 mm 5 V RGB plus 4-pin NZXT RGB cable; an NZXT RGB & Fan Controller or compatible motherboard is required for full control and is sold separately.

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