Fan be quiet! Pure Wings 3 Fan 140mm PWM high-speed - BL109

be quiet! Pure Wings 3 140mm PWM high-speed (BL109) is a 140 mm case fan aimed at people who want serious airflow and control through the motherboard. It operates at 400–1800 RPM, giving you a wide range – from quiet mode to aggressive cooling under load. It provides airflow up to 122.6 m3/h and static pressure of 2.44 mmH2O, suitable for dense front panels or filters. The black design without RGB makes it simple and easy to fit into any case.

What you get

With this fan, you get a balanced combination of noise, airflow, and pressure, with 30.5 dBA at maximum speed being a reasonable compromise for a high-speed model. The PWM 4-pin connector allows the motherboard to dynamically control the speed – quiet in idle and higher RPM when the CPU and GPU heat up. The Rifle Bearing bearing is a step above ordinary sleeve solutions and is more suitable for long-term operation, especially when mounted vertically at the front of the case. With a consumption of up to 5.4 W and a current of 0.44 A, you can easily plan how many fans to connect to one fan header via a hub or splitter. The 36-month warranty gives you peace of mind for long-term use.

• Size 140 x 140 x 25 mm – the larger blade compared to 120 mm allows for more air at the same or lower speeds.
• Speed 400–1800 RPM – a wide range for quiet everyday use and strong cooling during gaming or rendering.
• Flow 122.6 m3/h – sufficient airflow for good overall cooling of mid and high airflow cases.
• Static pressure 2.44 mmH2O – better performance behind dense filters, mesh panels, or radiators.
• Noise level 30.5 dBA – controllable noise at maximum speed, especially with the correct PWM profile.
• Rifle Bearing bearing – better durability and stability during prolonged operation compared to standard sleeve.
• 4-pin PWM connector – full control through BIOS or software for automatic adjustment based on temperature.
• Black color and no RGB – clean, unobtrusive look for builds without a light show.
• Warranty 36 months – three years coverage for the fan.

Who it is suitable for

It is suitable if you are looking for a 140 mm case fan with a focus on airflow and controllable noise – for gaming machines, powerful workstations, or an upgrade from stock fans. It is a good choice for a front intake or top/rear exhaust fan, as well as in more cramped cases with filters. If you are aiming for an absolutely silent build and never ramp up the speeds, you might find a non-high-speed model more interesting, but here you gain flexibility.

The most sensible aspect of this fan is the combination of 140 mm format, high flow, and PWM control, plus a higher quality bearing and 3 years warranty – a practical choice for reliable and flexible case cooling.