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Alphacool NexXxoS XT45 280mm radiator copper fins dual 140mm fan slots G1/4 ports 45mm thick

Alphacool

Alphacool NexXxoS XT45 X-Flow 280mm Radiator 140mm 45mm

SKU CH-7H92-E5ZGP

A 280 mm copper radiator with two 140 mm fan slots and 45 mm thickness for high-flow liquid cooling loops

  • Radiator size280 mm
  • Fan size2 Fan Slots (140 mm)
  • Product typeRadiator

Size 280mm

  • Full-copper construction boosts thermal transfer
  • X-Flow design supports high flow rates
  • 280 mm length fits dual 140 mm fans
  • 45 mm thickness increases cooling surface
  • Includes mounting hardware and two screw plugs

Alphacool NexXxoS XT45 X-Flow 280mm Radiator

The Alphacool NexXxoS XT45 X-Flow is a full copper liquid cooling radiator measuring 280 mm in length with dual 140 mm fan slots. Its 45 mm thickness houses copper chambers, fins and channels designed for high flow rates. It suits enthusiasts building custom water cooling loops who want maximum thermal capacity from a single radiator.

Suits custom loops needing high flow

This radiator fits builds that can accommodate a 280 mm by 45 mm form factor and dual 140 mm fans. Builders with restricted mounting space or single-fan layouts will need a different radiator size. It includes two screw plugs and mounting hardware for standard G1/4 connections.

45 mm thick full copper core with X-Flow design

The defining specification is the 45 mm thick full copper core using an X-Flow internal structure built for high flow rates. This construction sets its thermal performance ceiling and determines whether it fits the available clearance in your chassis.

How it compares

Measured against everything we stock in Liquid Cooling & AIO Coolers, at today’s prices. Recalculated every night.

Price $81.99
Pricier than about 55% of the 1,190 comparable items (median $71.99).
Radiator size 280 mm
Lower than about 63% of the 165 comparable items (median 360 mm).

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Specifications

Product
Product typeRadiator
Size & build
Radiator size280 mm
Fan size2 Fan Slots (140 mm)

Other versions of this model

5 more in the same range

Questions about this item

How do I install the 280 mm radiator and which step often causes leaks?

Mount the radiator using the included hardware so the two G1/4 ports face the tubing run; the step most builders miss is tightening the two supplied screw plugs into the unused ports before pressure testing.

What maintenance will the full-copper 45 mm thick core need later?

Flush the loop and refresh coolant once a year; the all-copper construction resists corrosion, but the two G1/4 screw plugs and their O-rings should be inspected and re-seated during each service.

What limit appears first when the 140 mm fans run at sustained load?

The 45 mm fin density restricts airflow, so static pressure from the 140 mm fans becomes the bottleneck before the copper core reaches thermal saturation.

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