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

The Lian Li Galahad II Trinity 12 cm Black is an all-in-one liquid cooler designed for CPU thermal management in desktop systems. This AIO combines a 27 mm high-density aluminum radiator, a 120 mm ARGB PWM fan with fluid dynamic bearing, and a pump with interchangeable caps and integrated controller to provide flexible installation and lighting control. It supports mainstream sockets including AM4 and AM5 and is finished in black to match a wide range of builds.

Advantages

The Galahad II Trinity improves on previous designs with a single-wave, 20 FPI radiator that reduces airflow restriction and enhances heat dissipation. The pump cap offers three interchangeable designs and dual independently controllable color rings for customizable lighting. ARGB PWM fans are daisy-chainable via a short cable for cleaner cable routing, and the 120 mm fan uses fluid dynamic bearings for quieter, stable operation. A 45° tubing connector allows 360° rotation for flexible mounting orientations while redesigned one-piece mounting backplates with fixed struts simplify installation. The built-in controller and L-Connect 3 software enable precise control of lighting and pump/fan speeds.

Suitable for

• Cooling mid-tower and compact desktop gaming PCs
• Workstations requiring consistent CPU thermal performance
• Systems using Socket AM4 and Socket AM5 processors
• Builds where ARGB lighting coordination with case fans is desired

Key specifications

• Type: All-in-one liquid cooler
• Fan diameter: 120 mm
• Radiator thickness: 27 mm
• Radiator fins: single-wave, 20 FPI
• Fan bearing: Fluid Dynamic Bearing (FDB)
• ARGB: Daisy-chainable ARGB fans
• Supported sockets: Socket AM4, Socket AM5
• Product colour: Black
• MPN: GA2T24INB
• EAN: 4718466013569

How to use

Mount the radiator in a compatible location within the chassis, secure the pump unit over the CPU using the included one-piece backplate and fixed struts, and connect the 120 mm fan(s) to the pump using the supplied short daisy-chain cable. Attach the tubing, using the 45° rotatable connector as needed to achieve the desired orientation. Apply thermal paste using the included control film and spreader to ensure an even, correct amount. Connect the pump’s integrated controller and ARGB headers to the motherboard or control software, then configure lighting and fan/pump speed through L-Connect 3.

Recommendations

Install the radiator where case airflow is optimal (intake or exhaust depending on your setup), ensure fans are oriented for effective airflow through the 20 FPI radiator, and confirm secure mounting to avoid leaks. Use L-Connect 3 to set fan curves and ARGB profiles for balanced cooling and noise. Verify compatibility with the chassis before installation to accommodate the 27 mm radiator thickness and the 120 mm fan dimensions.