Details
The Alphacool Core 2 XT 240mm CPU AiO Cooler is an all-in-one (AIO) liquid CPU cooler with a 240 mm radiator for AMD AM4 and AM5 and Intel LGA 1700 and 1851. Unlike conventional sealed AIO coolers it has a serviceable construction, with multiple G1/4 radiator ports, including a dedicated fill and drain port. The same cooler comes with a 280 mm, 360 mm or 420 mm radiator.
Properties
- Intel sockets
- LGA 1700, 1851
- AMD sockets
- AM4, AM5
- Radiator
- 240 mm, NexXxoS HPE Full Copper, 30 mm thick
- Fans in the box
- 2 x Apex Stealth 120mm aRGB PWM, approximately 380 to 2,600 RPM
- Pump
- Core DC-LT 3, up to approximately 3,800 RPM
- Tubes
- TPV, flexible and durable
Fit
Socket compatibility comes from the CPU mounting hardware in the box, which covers every socket named above. For AMD, the accessories list in the manual shows a CPU bracket set and four threaded bolts, and the cooler mounts on the board's original backplate. For Intel it shows a second bracket set, four threaded bolts of their own and a CPU backplate, which the manual says is only required for the Intel socket. Four screw sleeves and four washers complete the set.
On an AMD board the manual has you remove the two-piece retention frame first. On either platform you clean the CPU, apply the thermal grease and remove the protective film before the cooler goes on. Where the socket hardware goes on, the manual says to hand tighten only. The package includes the thermal paste (1g) and a putty tool.
Custom loop parts in an AIO
The cooler brings technology and materials traditionally found in custom water cooling systems into a convenient all-in-one format. It is designed for users who want high cooling performance without building a complete custom loop. It combines a NexXxoS HPE radiator, Core 1-based CPU cooling technology, the Core DC-LT 3 pump and Apex Stealth fans. With them it offers many of the advantages of a custom water cooling system.
CPU block and pump
The cooling technology at the heart of the CPU block is derived from the proven Core 1 series of Alphacool. The chrome-plated copper cold plate efficiently transfers heat from the processor into the coolant, while the integrated Core DC-LT 3 pump provides reliable circulation throughout the system. Operating at speeds of up to approximately 3,800 RPM, this powerful PWM pump delivers a maximum flow rate of approximately 2.1 L/min and a head pressure of up to 1.4 meters. Pump and CPU block are enclosed within an aluminum housing, with the aluminum remaining completely isolated from the coolant.
Full-copper radiator
Heat is dissipated through an Alphacool NexXxoS HPE 240mm Full Copper Radiator. Unlike many conventional AIO radiators, it has cooling fins, channels and pre-chambers that are manufactured from copper for excellent thermal transfer. The HPE radiator utilizes 14 cooling channels and an 18 FPI fin structure, a fin density that gives a large cooling surface within its compact thickness.
Fans and lighting
Two Alphacool Apex Stealth 120mm PWM fans provide high static pressure airflow through the radiator. Each fan operates between approximately 380 and 2,600 RPM while producing up to 59.79 CFM of airflow and 3.35 mmH2O of static pressure. Zero-RPM fan operation is supported, which allows the fans to stop completely when cooling demand is low. Their integrated 5V addressable RGB lighting adds customizable illumination to the system.
Serviceable construction
The cooler also distinguishes itself from conventional AIO coolers through this construction. Alphacool incorporates components and design principles from its DIY water cooling ecosystem, allowing the system to be maintained and serviced when necessary. Two features of the radiator further support long-term maintenance and flexibility: its multiple ports, and the fill and drain port for easier maintenance.
How to connect everything
As an AIO the cooler arrives with its TPV tubing in place, so it needs no fittings of your own. The lighting is 5V addressable RGB (aRGB): the box holds an ARGB adapter and an aRGB extension for it, plus a PWM extension cable. The manual shows how to connect the pump and its aRGB lighting, the fans and the fan aRGB lighting, and its last step shows the fillport.
Technical data radiator
| Radiator | Alphacool NexXxoS HPE 240mm Full Copper Radiator |
| Thickness | 30 mm |
| Cooling channels | 14 |
| Fin density | 18 FPI |
| Copper parts | Fins, cooling channels and pre-chambers |
| Ports | Multiple G1/4, including a dedicated fill and drain port |
Technical data cooler and pump
| Cooling technology | Based on Alphacool Core 1 |
| Cold plate | Chrome-plated copper |
| Housing | Aluminum, isolated from the coolant |
| Pump | Integrated Alphacool Core DC-LT 3 pump |
| Pump speed | Up to approximately 3,800 RPM |
| Maximum pump flow rate | Approximately 2.1 L/min |
| Maximum pump head pressure | 1.4 meters |
Technical data tubes
| Material | TPV tubing |
Technical data fans
| Fans | 2 x Alphacool Apex Stealth 120mm aRGB PWM |
| Fan speeds | From approximately 380 to 2,600 RPM |
| Airflow | Up to 59.79 CFM per fan |
| Static pressure | Up to 3.35 mmH2O per fan |
| Zero-RPM fan operation | Supported |
| Lighting | Integrated 5V addressable RGB |
More technical data
| Pump: rated voltage | 12 V DC |
| Pump: operating voltage | 8 - 13.5 V DC |
| Pump: input current (filled with water) | 0.30 (max. 0.36) A |
| Pump: input current (no water) | 0.06 (max. 0.10) A |
| Pump: input current (when measuring the flow rate) | 0.40 (max. 0.48) A |
| Pump: power | 3.6 (max. 4.32) W |
| Pump: acoustical noise | 25 (max. 30) dB(A) |
| Thermal paste: density (in g/ml) | 2.6 to 2.7 |
| Thermal paste: viscosity at 20 °C (in Pa s) | 130 to 140 |
| Thermal paste: thermal conductivity (in W/m-K) | 6.7 |
| Thermal paste: thermal impedance | 0.0006 °C⋅in²/W |
| Thermal paste: permittivity at 10^6 Hz | 2.3 |
| Thermal paste: volume resistivity | 2.0 x 10^13 ohm cm |
| Thermal paste: working temperature (in °C) | -20 to 130 |
| Maximum torque M2 thread | 0.13 Nm |
| Maximum torque M2.5 thread | 0.27 Nm |
| Maximum torque M4 thread | 1.12 Nm |
| LED quantity and length | 12 pcs / 145.7 mm |
| Fan: dimensions (L x W x H) | 120 x 120 x 25.5mm |
| Fan: material (impeller) | Plastic |
| Fan: speed | 380 to 2600±10% rpm |
| Fan: bearing | Sleeve bearing |
| Fan: cable length PWM / aRGB | 40±8 mm (+ 50cm extension cable) |
| Fan: cable length (daisy chain) | 110±10 mm |
| Fan: rated power consumption | 3.72 W (Max) |
| Fan: noise level | 36.4 dB(A) |
| Fan: MTBF | 100,000 h |
| Fan: aRGB connection | 3-Pin JST |
| Fan: color | Black |
| Radiator: L x W x H | 271.5 x 124 x 30mm (±3%) |
| Radiator: material threads | Brass |
| Radiator: material outer housing | Stainless steel |
| Radiator: pressure tested | 0.8 Bar |
| Radiator: maximum working temperature | 60°C |
| Radiator: color | Black |
In the box
- 1x Alphacool Core 2 XT 240mm CPU AIO
- 2x Alphacool Apex Stealth 120mm aRGB PWM Fans
- CPU mounting hardware
- 1g thermal paste
- 1x Putty tool
- 1x ARGB Adapter
- 1x PWM Extension cable
- 1x aRGB Extension
- 8x M3 Screw
- 8x M3x5mm
- 1x Plug tool
Alphacool's manual for the Core 2 XT series is a PDF and covers all four radiator sizes. Its data sheet is a PDF too, and so are the safety data sheets for the thermal paste (UK and US version) and the coolant. Its 3D model of the cooler is an STP file, and the 3D viewer shows it from every side.
