All-in-one liquid cooler Lian Li Galahad II Trinity 12 cm Black

The Lian Li Galahad II Trinity 120 mm All-in-one liquid cooler combines a high-density aluminum radiator, ARGB PWM fans and a pump with interchangeable caps to deliver improved thermal performance and flexible aesthetics. Designed for compatibility with mainstream CPU sockets, the Galahad II Trinity uses a 27 mm thick radiator with 20 FPI fins and a 120 mm fan equipped with fluid dynamic bearings to provide effective airflow and stable operation.

Advantages

The cooler improves on the previous Galahad AIO with multiple design changes that increase cooling efficiency. Its daisy-chainable ARGB PWM fans simplify cable routing while maintaining addressable lighting control. The pump cap offers three interchangeable designs and two independently controlled lighting rings for customizable appearance. A 45° rotatable tubing connector enables versatile mounting orientations, and redesigned one-piece backplates with fixed struts streamline installation and maintain compatibility with common CPU sockets.

Suitable for

• Gaming PCs requiring reliable CPU cooling
• Compact or mid-tower builds where a 120 mm radiator is preferred
• Systems where ARGB lighting synchronization is desired
• Users who need easy installation and thermal paste control

Key specifications

• Type: All-in-one liquid cooler
• Fan diameter: 120 mm
• Fan thickness: 25 mm
• Bearing type: Fluid dynamic bearing
• Radiator thickness: 27 mm
• Radiator fins: Single-wave fins, 20 FPI
• Maximum air pressure: 3.66 mmH2O (typical for model)
• Supported sockets: Socket AM4, Socket AM5
• Product colour: Black

How to use

Mount the radiator and fans to a compatible chassis location using the supplied screws, orienting the 45° tubing connector as needed to achieve the desired tubing routing. Fit the one-piece backplate behind the motherboard and secure the pump assembly to the CPU following the included instructions. Connect the ARGB PWM fans to the pump using the short daisy-chain cable and plug the pump into the motherboard headers or the included controller. Apply the provided thermal paste control film and spreader to ensure an even, appropriate layer of thermal compound between the CPU and cold plate.

Recommendations

For optimal cooling, install the radiator where it can intake cool air or exhaust warmed air efficiently and ensure fans are oriented to create a consistent airflow path. Use L-Connect 3 to configure fan curves and ARGB effects, and confirm compatibility with your chassis and socket (AM4/AM5) before installation.