This article covers Cooler Master MasterFan MF140 Halo White Edition PCケースファン MFL-B4DW-15NPA-R1 FN1735.

Overview

The Cooler Master MasterFan MF140 Halo White Edition (model MFL-B4DW-15NPA-R1, product code FN1735) is a 140mm case fan designed for users who want both quiet operation and striking RGB lighting. It features a white frame and blades, dual-loop addressable RGB LEDs, and a maximum speed of 2000 RPM with a noise level of only 15.7 dBA. The fan uses a 3-pin DC connector and is compatible with ASUS, ASRock, and MSI motherboard RGB ecosystems.
What sets this fan apart is its dual-ring ARGB design: two independent LED rings create layered lighting effects that can be customized individually. The smart fan sensor automatically stops the fan if a cable or object gets caught in the blades, protecting your components from damage. An included ARGB connector clip secures the wiring connection for added reliability.
Positioned as an entry-to-mid-range ARGB fan, the MF140 Halo White Edition offers a unique combination of dual-loop lighting and safety features at a very accessible price point. It's an excellent choice for white-themed builds or anyone looking to add subtle, customizable illumination without breaking the bank.

Compatibility Guide

The MF140 Halo is a standard 140mm fan with 105mm mounting hole spacing, fitting most PC cases that support 140mm fans. Its 25mm thickness is compatible with typical radiators and CPU coolers. The power connector is a 3-pin header, meaning speed control is done via DC voltage regulation rather than PWM. Your motherboard must support DC fan control (most modern boards do, but check BIOS settings).
For RGB control, the fan uses a standard 4-pin addressable RGB header (5V, 3-pin). It officially supports ASUS AURA Sync, ASRock Polychrome Sync, and MSI Mystic Light. GIGABYTE RGB Fusion is not officially supported, so GIGABYTE motherboard users will need a separate ARGB controller or third-party software like SignalRGB.
The fan can be used as intake or exhaust. Its static pressure is adequate for standard case grilles and thin radiators, but for thick radiators (30mm+) or dense mesh filters, a higher-static-pressure fan is recommended.

Product Info

Released around 2022, the Cooler Master MasterFan MF140 Halo White Edition typically retails for approximately ¥2,300 in Japan (as of September 2026). It comes with a 2-year warranty and is sold as an official Japanese authorized product.
In the market, this fan sits at the entry-to-mid tier for ARGB fans. While many 140mm ARGB fans exist at this price point, few offer dual-loop LEDs and a smart safety sensor. The lack of PWM support is a notable drawback compared to similarly priced competitors like the Thermaltake Pure 14 ARGB.

Best Use Cases

  • Silent PC builders: With a maximum noise level of 15.7 dBA, this fan is exceptionally quiet. It's ideal for home office PCs, HTPCs, or any build where noise matters. However, ensure your motherboard supports DC fan control.
  • White-themed builds: The white frame and blades, combined with dual-loop ARGB, create a cohesive look in white-focused PC cases. The lighting is visible through side panels and adds a premium aesthetic.
  • RGB enthusiasts: The independent inner and outer rings allow for gradient and dual-color effects. You can fine-tune lighting using ASUS, ASRock, or MSI software for a personalized setup.
    Who should avoid this fan?
  • Users who require PWM control (this fan is DC-only)
  • Those planning to use it on thick radiators (30mm+) where static pressure is critical
  • GIGABYTE motherboard owners who want seamless RGB integration without extra hardware

Things to Consider

The most significant limitation is the 3-pin DC connector. While most modern motherboards support DC fan control, you must enable it in the BIOS. Some boards have limited voltage ranges, preventing the fan from spinning slowly enough for true silent operation.
RGB compatibility is another factor: ASUS, ASRock, and MSI are officially supported, but GIGABYTE is not. If you have a GIGABYTE board, you'll need an external ARGB controller or rely on third-party software, which may not work reliably.
Performance-wise, the MF140 Halo delivers about 82.5 CFM at max speed, which is moderate for a 140mm fan. High-airflow cases may benefit from multiple units or higher-CFM alternatives like the Noctua NF-A14 PWM. The smart fan sensor is a nice safety feature, but it could potentially trigger falsely if cables are routed too close to the blades.

FAQ

Q: Does this fan support PWM control?
A: No, it uses a 3-pin DC connector. Speed is controlled by voltage regulation. If you need PWM, look for the MF140 Halo PWM variant.
Q: Can I use this fan with a GIGABYTE motherboard's RGB?
A: Officially, no. GIGABYTE RGB Fusion is not supported. However, you can connect it to the 5V ARGB header and try third-party software like SignalRGB. For guaranteed control, use a Cooler Master RGB controller.
Q: Is this fan suitable for

Product Disclosure (Amazon)

  • Manufacturer: Cooler Master
  • ASIN: B09S7VDT9M
  • Note: This article covers a manufacturer-made product based on Amazon listing details.