be quiet! LIGHT WINGS LX 140mm PWM high-speed Fan - BL129

be quiet! LIGHT WINGS LX 140mm PWM high-speed is a 140 mm fan for cases or radiators, aimed at more serious configurations where you need both airflow and stable pressure. With 200–1800 RPM, up to 75.3 CFM, and 2.45 mmH2O, you have enough “muscle” for dense radiators and front panels with filters. At the same time, a maximum of 30.5 dBA keeps it within reasonable noise limits for a high-speed fan. Add addressable RGB with 16 LEDs, a lit hub, and matte blades, and you get a fan that looks as good as it cools.

What you get

This is a 140 x 140 x 25 mm fan with a PWM 4-pin connector, which means precise control of the RPM according to the temperature through the motherboard or controller. With 75.3 CFM airflow and 2.45 mmH2O pressure, you can comfortably use it for both intake/exhaust in the case and for liquid cooling with a denser radiator. The innovative closed loop motor design maintains the set RPM regardless of resistance – useful when filters and radiators get a bit dirty. The rifle bearing provides a better balance between noise, durability, and cost compared to the most basic solutions. And with the ARGB daisy chain cable, you can connect several fans in sequence and control them synchronously without cluttering the motherboard with excess connectors.

• Size 140 x 140 x 25 mm – larger diameter for more air at the same or lower RPM compared to 120 mm fans.
• RPM 200–1800 – wide range for quiet idle mode and aggressive cooling under load.
• Airflow 75.3 CFM and pressure 2.45 mmH2O – suitable for both case ventilation and dense radiators.
• Noise level 30.5 dBA – reasonable maximum for high-speed class fans, especially with a well-tuned PWM profile.
• Rifle Bearing – smoother operation and longer life compared to the cheapest sleeve solutions.
• 4-pin PWM and 12 V, 0.18 A, 5.4 W – standard compatibility with modern motherboards and fan hubs, with full control of the RPM.
• Addressable RGB with 16 LEDs, lit hub, and matte blades – flexible ARGB lighting with multiple colors and modes plus a clean, finished look.
• ARGB daisy chain cable – allows you to connect several fans in sequence for easier cable management.
• Application: case and radiator cooler – the same fan can cover almost all positions in the system.
• Warranty 36 months – peace of mind for long-term use.

Who it is suitable for

It is suitable if you are building a gaming or work machine with good ventilation and want fans that can spin seriously but remain quiet during light tasks. It is especially suitable for liquid cooling and front intake, where the combination of pressure and RGB is a plus. If you are aiming for an absolutely silent build and do not need ARGB, you might want to look at slower or non-RGB models.

The combination of high airflow, stable pressure, PWM control, and well-executed addressable RGB makes this fan a very good choice when you are looking for a balance between cooling, aesthetics, and control. If you need a single fan that can work almost anywhere in the case – LIGHT WINGS LX 140mm PWM high-speed is just that type of all-rounder.