Radiator Alphacool 18647 Copper Steel Black White 124mm 272.1mm 45mm

The Alphacool NexXxoS V.2 radiator is an evolution of the NexXxoS V.1 series, positioned as a high-end full-copper radiator for PC water-cooling systems. Finished in a modern white and black outer casing of sheet steel, the unit uses copper for all water-bearing parts and is designed to provide reliable heat dissipation while fitting into a variety of system layouts (dimensions: 124 mm × 272.1 mm × 45 mm).

Advantages

The radiator uses pure copper for pre-chambers, cooling fins and cooling channels, offering higher thermal conductivity than aluminium. A fin density with 15 FPI and serrated fins improve airflow direction and controlled turbulence to increase cooling capacity and reduce flow noise. Alphacool’s patented recessed screw plugs allow the radiator to sit flush when mounted, and a protective plate under the screw holes prevents fan or mounting screws from penetrating too deeply and damaging the fins or water channels. Multiple IN/OUT connection options and a fill/vent port allow flexible integration and draining of the loop.

Suitable for

• Custom PC water-cooling loops requiring a compact high-performance radiator
• Systems where full-copper construction is preferred for thermal performance
• Front, roof or tightly fitted radiator mountings due to recessed fittings and protective plate

Key specifications

• Brand: Alphacool
• Model / MPN: 18647
• Material (water-bearing parts): pure copper; casing: sheet steel; threaded inserts: brass
• Dimensions (W × D × H): 124 mm × 272.1 mm × 45 mm
• Fan size compatibility: 120 mm
• Weight: 0.868 kg
• Colour: Black, White

How to use

Install the radiator in your case using the standard 120 mm fan mounting holes. Use the recessed stop fittings for inlet and outlet connections and route tubing to the desired ports. The fill/vent port can be used to fill or drain the loop; ensure fittings are tightened and the circuit is pressure-tested before powering the system. When mounting fans, align them with the serrated fins for correct airflow direction and secure screws until they seat on the protective plates to avoid damaging internal fins and channels.

Recommendations

For optimal performance, pair the NexXxoS V.2 radiator with 120 mm high-static-pressure fans and ensure a clean airflow path. Use corrosion-inhibiting and biocide-containing coolant compatible with copper. When installing in front or top positions, take advantage of the recessed screw plugs to achieve a flush fit and avoid overtightening mounting screws to protect the fins.