OULLX 120mm PWM ARGB PC Case Cooling Fan 5V – 20dBA Quiet
OULLX 120mm PWM ARGB PC Case Cooling Fan 5V – 20dBA Quiet
OULLX 120mm PWM ARGB Chassis Cooling Fan – Quiet, Efficient & Vibrant
Upgrade your PC build with the OULLX 120mm PWM ARGB Synchronous Cooling Fan — engineered for superior airflow, whisper-quiet operation, and stunning 5V ARGB lighting that syncs with your motherboard's ecosystem. Whether you're cooling your case or a radiator, this fan delivers reliable performance with a rated lifespan of 40,000 hours.
Key Features
- 120mm Form Factor (12 × 12 × 2.5 cm) — fits standard PC chassis and AIO radiator mounts
- PWM Speed Control — automatically adjusts RPM (600–1600 RPM) based on system temperature for optimal airflow vs. noise balance
- 5V ARGB Synchronous Lighting — connects to your motherboard's 5V 3-pin ARGB header for seamless RGB synchronization
- Ultra-Quiet Operation — fluid bearing design and optimized 7-blade geometry keep noise at just 20 dBA
- High Air Volume — 48.5 CFM airflow keeps your components running cool under load
- Versatile Connectivity — supports 3-pin, 4-pin PWM, and 5V 3-pin ARGB interfaces for broad motherboard compatibility
- CE Certified — meets international safety and quality standards
- No High-Concern Chemicals — safe materials throughout
Full Specifications
| Fan Size | 120mm (12 × 12 × 2.5 cm) |
| Fan Speed | 600 – 1600 RPM (PWM) |
| Air Volume | 48.5 CFM |
| Noise Level | 20 dBA |
| Voltage | 5V |
| Bearing Type | Fluid Bearing |
| Blade Quantity | 7 Blades |
| Fan Life | 40,000 Hours |
| Power Interface | 3-pin / 4-pin PWM / 5V 3-pin ARGB |
| Lines | 3 Lines |
| Model Number | PC8221 |
| Certification | CE |
| Used For | PC Case, Radiator |
| Country of Origin | Made in Mainland China |
Perfect Pairing
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Frequently Asked Questions
Q: What motherboard headers does the OULLX 120mm ARGB fan support?
A: The fan is compatible with 3-pin, 4-pin PWM, and 5V 3-pin ARGB headers, making it broadly compatible with most modern motherboards that support PWM fan control and ARGB synchronization.
Q: How loud is the OULLX 120mm cooling fan at full speed?
A: Thanks to its fluid bearing design and aerodynamic 7-blade configuration, the fan operates at a maximum of just 20 dBA — nearly silent even at its top speed of 1600 RPM.
Q: Can I use this fan for both case cooling and radiator mounting?
A: Yes! The OULLX PC8221 is designed for use in standard PC chassis and on radiators, making it a versatile choice for air-cooled and liquid-cooled builds alike.
Q: Does the PWM fan speed control happen automatically?
A: Yes. When connected to a 4-pin PWM header, the fan speed adjusts automatically between 600 and 1600 RPM based on the temperature signals sent by your motherboard, keeping your system cool efficiently without unnecessary noise.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.