This article covers ALSEYE W12 ケースファン 非常に優れた「W」デザイン PCケースファン フルアルミニウムフレームケースファン 120mm ARGB & PWM コンピュータケースファン.

Overview

The ALSEYE W12 (W12 Pro) is a 120mm PC case fan that stands out with its full aluminum alloy frame and a unique "W"-shape blade design that maximizes blade length for better lighting and airflow. It supports both ARGB (5V 3-pin) and PWM control (via 3-pin voltage regulation), with a speed range of 700–1800 RPM. The flip bearing (FDB) keeps operation quiet and stable, while the aluminum construction adds rigidity and premium aesthetics. This fan fits squarely in the entry-to-mid range but brings a high-end material normally found only in more expensive models.

Compatibility Guide

This is a standard 120x120x25mm fan, compatible with any case that has 120mm fan mounting points. Power is supplied via a 3-pin connector, which means it uses voltage (DC) control rather than true PWM unless the motherboard supports DC mode on its 4-pin headers. For ARGB, it uses a 5V 3-pin header (not 12V RGB), so make sure your motherboard or controller has the correct 5V ARGB pinout. The fan can be daisy-chained with other ARGB devices for synchronized lighting. Mounting hardware is not included in the package—most cases come with screws, but you may need additional rubber grommets if your case lacks anti-vibration pads.

Product Info

The ALSEYE W12 case fan is available on for around ¥4,798 (as of May 2026). Warranty details are not publicly specified, but ALSEYE generally offers standard after-sales support. In terms of market positioning, this fan offers a premium aluminum frame at a price typically reserved for plastic-framed fans. While specific airflow (CFM) and static pressure figures are not provided, the max 1800 RPM speed and 38.8 dBA noise level indicate a middle-ground performer—good for general cooling but not extreme-radiator builds. The aluminum frame helps dissipate heat from the motor but adds weight (~200g estimated).

Best Use Cases

Aesthetic-focused builds: The aluminum frame and W-shaped blades look striking through a tempered glass panel, and the ARGB lighting can be synchronized with other components via the 5V header. Ideal for themed or showcase PCs. Budget-conscious enthusiasts: At around ¥4,800, this fan gives you metal construction and addressable RGB without breaking the bank. A great choice for builders who want something different from the usual plastic fans. * Casual quiet PC projects: The FDB bearing keeps noise low at normal operating speeds (under 1200 RPM). For users who don't demand extreme airflow but value a clean, quiet setup, this fan fits nicely.

Things to Consider

First, be aware that the 3-pin connector can't use true PWM control. Many modern motherboards support DC voltage control even on 4-pin headers, but if yours doesn't, the fan will run at full speed always. Second, the 38.8 dBA noise rating is at maximum speed—at 1800 RPM the fan is audible, so you'll likely run it at lower speeds for quiet operation. Third, the fan is heavier than plastic competitors due to the aluminum frame; check that your case's fan mounts are secure enough to prevent vibration. Finally, ALSEYE is not as well-known as Noctua or be quiet!, so long-term reliability is less documented, though existing user reviews are generally positive. If you need precise PWM control or the absolute quietest fan, consider alternatives like the Noctua NF-A12x25 or be quiet! Silent Wings 4.

Product Disclosure (Amazon)

  • Manufacturer: ALSEYE
  • Seller: Amazon US
  • Fulfilled by: Amazon US
  • ASIN: B0B1M8GSG3
  • Note: This article covers a manufacturer-made product based on Amazon listing details.