240mm Full Copper Radiator Alphacool Core XT45 — high-density cooling for liquid PC loops

The Alphacool Core XT45 Full Copper 240mm radiator is a liquid-cooling heat exchanger designed for PC water-cooling loops. Built entirely from copper for optimal thermal conductivity, this 240mm radiator fits standard dual-fan mounts and features a high-density fin stack to increase surface area and improve heat transfer from coolant to ambient air. The unit is intended for custom liquid loops and provides a compact solution for cooling CPUs, GPUs, or combined loops in cases with limited radiator space.

Advantages

Full-copper construction enhances thermal performance compared with mixed-metal radiators and reduces thermal resistance between coolant and chassis. The 240mm form factor balances cooling capacity and compatibility with many mid-tower and compact enclosures. A high-density fin array increases heat dissipation per unit length without significantly increasing thickness, allowing efficient cooling in confined installations. Standard dual-fan mounting supports a range of fan configurations for push, pull, or push-pull setups.

Suitable for

• Custom PC water-cooling loops for single or dual-component cooling (CPU, GPU)
• Mid-tower and compact cases requiring a 240mm radiator
• Systems prioritizing higher thermal conductivity and corrosion resistance offered by copper
• Enthusiast builds using push, pull, or push-pull fan configurations

Key specifications

• Form factor: 240mm (fits two 120mm fans)
• Material: full copper construction for core and fins
• Fin density: high-density fin array for increased surface area
• Mounting: standard dual-fan mounting on both sides for push/pull configurations
• Compatibility: designed for custom liquid-cooling loops in PC enclosures with 240mm radiator slots

How to use

Install the radiator in a location within the PC case that supports a 240mm radiator, aligning the mounting holes with the case bracket for two 120mm fans. Attach fans in the desired configuration (push, pull, or push-pull) and connect fan power to appropriate headers or controllers. Integrate the radiator into the loop using compatible fittings and tubing, ensuring secure, leak-free connections. Fill the loop with suitable coolant, bleed trapped air, and verify flow and temperature stability before regular operation.

Usage recommendations

Use corrosion-inhibited coolant compatible with copper systems and check for compatibility of other loop components to avoid galvanic corrosion. Regularly inspect fittings and tubing for signs of leakage or degradation, clean dust from fins and fans to maintain airflow, and monitor coolant temperature and level during the first hours of operation to ensure proper loop performance.