be quiet!
Silent Wings 4 120mm PWM
Best high-pressure cooling fan for silent PC enthusiasts and radiator builds.
Experience top-tier cooling performance with the be quiet! Silent Wings Pro 4 120mm PWM fan. This high-end fan is engineered for maximum performance, especially on radiators and heat sinks, thanks to its optimized fan blades and a frame designed for high air pressure. It features three different mounting options included in the delivery: pre-installed radiator corners, anti-vibration mounts ideal for chassis use to minimize noise, and standard plastic mountings. You can easily adjust the maximum PWM speed using the speed switch to select between medium, high, or ultra-high speed settings, reaching up to 3000 RPM. The fan operates with virtually inaudible noise at regular speeds, utilizing a 6-pole fan motor and a fluid-dynamic bearing for exceptionally smooth operation.
$23.50
Owner Satisfaction
4.5
/ 5
Category Rank
866
/ 3598
#866 in Computer System Cooling Parts
Price vs Category Average
-84%
Below average
Dimensions
12012025
/ x x mm
Who it's for
- Quiet-focused builders prioritizing a silent computing environment
- Long-term PC owners valuing durability and reliable hardware
- System builders needing versatile mounting for radiators or cases
Who should skip it
- Beginners preferring a simple, tool-free installation experience
- Budget-conscious shoppers looking for cost-effective cooling solutions
- Overclockers requiring maximum airflow for high-restriction cooling setups
Performance breakdown
Airflow Capacity
High-speed ceiling delivers massive cooling potential for demanding thermal environments.
Static Pressure
Funnel-shaped outlet design pushes air through dense radiator fins with ease.
Acoustic Profile
Fluid dynamic bearing ensures whisper-quiet operation during standard daily workloads.
Versatility
Three distinct mounting systems adapt perfectly to any chassis or radiator setup.
Control Precision
Integrated speed switch offers granular control over maximum RPM performance tiers.
Build Longevity
Six-pole motor and robust construction backed by a generous five-year warranty.
Key Specs
Dimensions
120 x 120 x 25 mm
Maximum Fan Speed
3000 RPM
Maximum Airflow
83.9 CFM
Maximum Air Pressure
5.31 mm H2O
Maximum Noise Level
36.9 dBA
Bearing Technology
Fluid Dynamic Bearing (FDB)
Connector
4-pin PWM with 500mm sleeved cable
Weight
0.227 kg
Features
- Optimized blades for highest radiator performance
- Speed switch adjusts max PWM between three settings
- High air pressure via funnel-shaped air outlet
- Virtually inaudible operation at regular speeds
- Smooth operation via 6-pole motor and FDB
- Three distinct mounting systems included
- 5-year manufacturer warranty provided
What customers say
Consumers overwhelmingly praise the be quiet! Silent Wings 4 120mm PWM for its exceptional quietness, even when moving substantial air. Users find the balance between effective cooling and near inaudibility ideal for noise sensitive setups. The premium build quality is frequently noted, suggesting strong durability and longevity. While these fans represent a higher investment, the consensus is that the superior acoustic performance and robust construction justify the cost for those prioritizing a serene computing experience. They are highly recommended as a reliable, premium cooling solution that delivers precisely on its promise of silent efficiency.
Know before you buy
The Silent Wings 4 is specifically engineered for high-resistance environments like radiators and heat sinks. Its funnel-shaped air outlet and high static pressure design make it an excellent choice for liquid cooling setups, though it performs well as a case fan too.
There is a physical switch on the back of the fan frame that allows you to cap the maximum PWM speed at three different levels: medium, high, or ultra-high. This gives you manual control over the fan's performance ceiling without needing to adjust your motherboard's BIOS settings.
The fan comes with three distinct mounting sets: radiator corners for a tight seal, anti-vibration mounts for chassis installation to reduce noise, and standard plastic mounts. These options allow you to tailor the installation method to your specific cooling configuration.
While the fan is virtually inaudible at regular speeds, it will produce noticeable airflow noise when pushed to its maximum 3000 RPM. The 6-pole motor and fluid-dynamic bearing are designed to keep mechanical vibration and motor noise to a minimum, even at higher performance levels.
It uses a standard 4-pin PWM connector, which is compatible with almost all modern motherboard fan headers. This allows for precise speed control via your system's software or BIOS.
The fan utilizes a high-quality fluid-dynamic bearing (FDB), which is designed for long-term, smooth, and quiet operation. The manufacturer backs this reliability with a 5-year warranty.
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