be quiet! Pure Rock 3 LX Processor Air cooler 12 cm Black 1 pc(s)

The be quiet! Pure Rock 3 LX 12 cm air cooler offers compact performance with a 120 mm Light Wings LX PWM fan that reaches up to 2000 RPM and delivers an airflow of 105.1 m³/h. Designed for efficient processor cooling in a small footprint, this black cooler supports a wide range of sockets including AM5, AM4, LGA 1700 and multiple LGA 115x/1200 variants, and features a rifle bearing for long-term durability. Preinstalled mounting makes installation quick and straightforward.

Advantages

The Pure Rock 3 LX combines a compact heatsink with a high-performance 120 mm fan to provide strong cooling while maintaining low noise levels. Its rifle bearing extends fan lifespan and the preinstalled mounting bracket reduces installation time. The cooler supports a thermal design power (TDP) up to 190 W and fits many common CPU socket types, making it compatible with a wide range of systems.

Suitable for

• Small and mid-tower PC builds where space is limited
• Mainstream desktop processors with moderate to high cooling needs (up to 190 W TDP)
• Quiet home or office systems requiring low-noise cooling
• Upgrades for systems using AM5, AM4, LGA 1700, LGA 115x or LGA 1200 sockets

Key specifications

• Type: Air cooler
• Fan diameter: 120 mm (Light Wings LX PWM)
• Maximum fan speed: 2000 RPM
• Airflow: 105.1 m³/h
• Bearing: Rifle bearing
• Thermal Design Power (TDP): 190 W
• Supported sockets: Socket AM5, Socket AM4, LGA 1700, LGA 1150/1151/1155, LGA 1200
• Colour: Black
• Weight: 0.57 kg

How to use

Mount the be quiet! Pure Rock 3 LX onto the CPU following the included mounting hardware and manufacturer instructions. Ensure the cooler is properly aligned with the CPU socket for secure contact with thermal paste applied. Connect the fan to a PWM-capable fan header on the motherboard to allow automatic speed control up to 2000 RPM. Verify clearance around RAM modules and the side panel before closing the case.

Recommendations

For best results, use a high-quality thermal paste and ensure adequate case airflow. Regularly clean dust from the heatsink and fan to maintain cooling efficiency and quiet operation.