Radiator Alphacool NexXxoS ST30 1011659

NexXxoS ST30 Full Copper X-Flow 480mm radiator from Alphacool is a slim, high-performance heat exchanger for custom PC water-cooling loops. With a 30 mm thickness and full-copper construction — including fins, channels and chambers — it is designed to improve thermal transfer while keeping a compact profile. The X-Flow design distributes water evenly across all channels to maximise cooling efficiency at higher flow rates.

Advantages

Constructed entirely from copper for improved thermal conductivity compared with partly brass or aluminium radiators, the NexXxoS ST30 offers better heat dissipation in a compact 30 mm form factor. Its bevelled copper chambers and X-Flow internal geometry ensure even flow through all channels. Standard M3 threaded mounting points and an internal protective ledge prevent screw damage to the fins, while the fin spacing is optimised to perform well with slow to medium-speed fans.

Suitable for

• Slim or space-constrained PC cases requiring a 480 mm radiator
• Custom water-cooling loops for CPUs and GPUs
• Builds prioritising low-noise operation with slow/medium fans
• Setups that benefit from high flow rates and even coolant distribution

Key specifications

• Brand: Alphacool
• Model: NexXxoS ST30
• MPN: 1011659
• EAN: 4250197142311
• Length: 480 mm (4x 120 mm)
• Thickness: 30 mm
• Material: Full copper (fins, channels, chambers)
• Design: X-Flow for even channel distribution

How to use

Install the radiator in your case using standard M3 screws through the provided mounting holes. Connect inlet and outlet fittings to your loop according to your planned coolant routing; the X-Flow chambers are designed for high flow and even distribution, so avoid excessive restrictive fittings when possible. Mount compatible 120 mm fans to the radiator, aligning airflow to your preferred push, pull or push-pull configuration. When screwing into the radiator, use appropriate screw length to avoid contact with the fins; the internal protective ledge reduces risk of damage from over-insertion.

Usage recommendations

Use medium or low-speed 120 mm fans to balance noise and cooling performance. Choose fittings with minimal sharp bends to maintain high flow rate. Regularly inspect and maintain coolant quality to preserve heat transfer efficiency and prevent corrosion despite the copper construction.