All-in-One Liquid CPU Cooler THERMALTAKE AW420 with 420mm Radiator and RGB Fans

The THERMALTAKE AW420 All-in-One Liquid CPU Cooler combines a 420mm radiator with three RGB fans and an integrated pump-block to deliver efficient heat removal for modern high-performance processors. Designed for use in gaming rigs and workstation builds, the unit provides continuous thermal control under sustained loads while adding customizable RGB lighting. The compact pump housing, flexible tubing and full-length radiator make the cooler compatible with cases that support 420mm mounts and aim to reduce CPU temperatures and thermal throttling.

Advantages

The large 420mm radiator increases surface area for heat exchange, improving dissipation compared with smaller AIO models. Integrated RGB fans offer adjustable lighting synchronized with motherboard controls or standalone controllers. The closed-loop design requires no refilling or maintenance under normal operation and the pre-applied mounting hardware supports straightforward installation across a range of CPU sockets. The combination of a high-capacity radiator and multiple fans enables lower fan speeds for quieter operation while maintaining cooling performance.

Suitable for

• High-performance gaming PCs with overclocked CPUs
• Workstations used for video rendering, 3D modelling and heavy compute tasks
• Systems aiming to reduce CPU temperatures and minimize thermal throttling
• Custom builds where integrated RGB lighting is desired

Key specifications

• Radiator size: 420 mm full-length radiator for enhanced heat dissipation
• Cooling fans: three RGB fans, optimized for static pressure and airflow
• Cooling type: closed-loop liquid cooling with integrated pump-block
• Compatibility: designed for PC cases with support for 420mm radiator mounting
• Noise and performance balance: engineered for effective cooling at moderate fan speeds
• Connectors: fan and RGB connectors compatible with standard motherboard headers or included controller options

How to use

Mount the radiator in a compatible case position that supports a 420mm radiator, typically at the top or front depending on case layout and airflow preference. Attach the three fans to the radiator in the desired push or pull orientation, then secure the radiator assembly inside the case. Position the pump-block over the CPU socket and fasten using the supplied mounting hardware appropriate to the CPU socket type. Connect fan power and RGB cables to the motherboard headers or controller, and connect pump power to the appropriate motherboard header. After powering on the system, confirm pump and fan operation and configure fan curves and RGB settings in BIOS or software.

Recommendations

Install the radiator where it will receive optimal airflow from case fans; avoid restricting intake or exhaust paths. Verify clearance for memory modules and tall VRM heatsinks when placing the pump-block and routing tubing. Use motherboard or software fan control to set conservative fan curves that maintain target CPU temperatures while minimizing noise. Periodically check mounting points and cable connections, but no routine fluid maintenance is required for closed-loop operation.