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Black 280mm radiator, 30mm thick, dual 140mm fan spacing, copper fins and chambers, steel side panels, four G1/4 ports

Alphacool

Alphacool NexXxos ST30 Full Copper X-Flow Radiator 280 Black 14242

SKU CH-GK1B-ZS0T3

A 280 mm full-copper X-flow radiator with 16 FPI fins and four G1/4 ports for dual 140 mm fans

  • TypeRadiator

Size 280mm

Struck-through versions exist but are not stocked here.

  • Full copper chambers, fins and channels boost heat transfer
  • X-Flow design built for high coolant flow rates
  • Dual 140 mm fan spacing for 280 mm radiator length
  • Sixteen fins per inch balance surface area and airflow
  • Four G1/4 threaded ports enable flexible loop routing

Radiator for Dual-Fan Loops

This 280 mm copper radiator fits water-cooling builds that use a pair of 140 mm fans. Black steel side panels and brass G1/4 threads complete the all-copper core for corrosion resistance. It targets enthusiasts assembling custom loops who want a slim-profile heat exchanger.

X-Flow Limits With 16 FPI

The X-Flow layout is designed for high flow rates through bevelled chambers, while the 16 fins-per-inch density balances surface area against airflow resistance. Builders planning very low-speed fans should note the fin density can restrict static pressure headroom. Four G1/4 ports allow flexible routing but limit thread options to that standard.

Capacity Headroom At 30 mm Thickness

The 30 mm core depth and 334 x 144 mm footprint provide solid thermal capacity for mainstream CPU and single-GPU loops. Heavy multi-GPU configurations or extreme overclocks may exceed the dissipation ceiling of this slim radiator. Users needing greater reserves should consider thicker or larger-surface alternatives.

Highlights

  • Full copper chambers, fins and channels boost heat transfer
  • X-Flow design built for high coolant flow rates
  • Dual 140 mm fan spacing for 280 mm radiator length
  • Sixteen fins per inch balance surface area and airflow
  • Four G1/4 threaded ports enable flexible loop routing

Specifications

TypeRadiator

Other versions of this model

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Questions about this item

Should I choose the 280 mm length with dual 140 mm fans or a different size?

This model is the 280 mm version designed for two 140 mm fans; other lengths are separate SKUs not covered here.

How does the 30 mm thickness and 16 FPI fin density affect cooling in my loop?

The slim 30 mm profile and 16 fins per inch give strong heat rejection at moderate fan speeds while keeping case clearance tight.

What does the four-port G1/4" X-Flow layout mean for tubing runs and flow restriction?

Four G1/4" threads in an X-Flow pattern let coolant enter and exit opposite corners, reducing restriction and simplifying tube routing.

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