Details
The Alphacool Core 2 LT 240mm CPU AiO Cooler is a compact AIO liquid cooler with a 240 mm radiator for AMD AM4 and AM5 and Intel LGA 115x, 1200, 1700, 1851 and 2066. As the successor to the Eisbaer LT it is designed specifically for small form factor systems and builds with limited installation space, with a radiator measuring just 25.5 mm thick. The same cooler comes with a 360 mm radiator.
Properties
- Intel sockets
- LGA 1150, 1151, 1155, 1156, 1200, 1700, 1851, 2066
- AMD sockets
- AM4, AM5
- Radiator
- 240 mm, NexXxoS ST25 full copper, 25.5 mm thick
- Fans in the box
- 2 x Core 120mm PWM, up to 2,500 RPM
- Pump
- Core DC-LT 3 PWM, up to approximately 3,800 RPM
- Tubes
- 320 mm TPV, rotatable 90° fittings at the CPU block
Fit
Socket compatibility comes from the CPU mounting hardware in the box, which covers every socket named above. For Intel, the accessories list in the manual shows one set of brackets, a CPU backplate, four mounting parts marked LGA 115x, 1200, 1700, 1851 and four LGA 2066 screws. For AMD it shows one set of brackets and four bolts for AM4 and AM5. Pressure springs and washers in two thicknesses 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. The package includes the thermal paste (1g) and a putty tool.
Successor to the Eisbaer LT
The Core 2 LT combines the proven full-copper radiator technology of Alphacool with an upgraded PWM pump, high-performance fans and a streamlined CPU block. Together they deliver effective cooling in a remarkably compact package. For users looking to add liquid cooling to a compact PC system, that gives an excellent balance of cooling performance, installation flexibility and value.
Slim full-copper radiator
Cooling is handled by an Alphacool NexXxoS ST25 radiator. Unlike many conventional AIO radiators, it has cooling fins, cooling channels and pre-chambers that are all manufactured from copper for efficient heat transfer. Its slim profile significantly reduces the space required to install it, making the cooler particularly well suited for compact cases where radiator clearance is limited.
Pump and CPU block
The CPU water block and the pump are integrated into a single unit, a compact pump/block assembly. Its chrome-plated copper cold plate efficiently transfers heat away from the processor. The new Alphacool Core DC-LT 3 PWM pump provides up to 2.1 L/min of coolant flow and a maximum head pressure of 1.4 meters. Its speeds reach approximately 3,800 RPM, while PWM control means pump performance can be adjusted according to system load to balance cooling and noise. Subtle blue LED illumination on the CPU block provides a clean visual accent.
Fans and tubing
Two Core 120mm PWM fans provide the airflow through the radiator, reaching speeds of up to 2,500 RPM. Each fan delivers up to 72.63 CFM of airflow and 2.42 mmH2O of static pressure, providing the airflow necessary for effective heat dissipation through the compact ST25 radiator. Installation is simplified by the TPV tubing and by the fittings at the CPU block, which are rotatable. These two features allow the tubing to be positioned around nearby components and routed cleanly inside space-constrained cases. Combined with the slim radiator and the compact pump unit, that eases installation.
How to connect everything
As an all-in-one cooler it arrives with the tubing and its fittings in place, so it needs no fittings of your own. The two fans connect through the included Y-splitter (4-Pin to 2x 4-Pin PWM) to one PWM header on the motherboard.
Technical data radiator
| Radiator | Alphacool NexXxoS ST25, full copper |
| Size | 240 mm |
| Thickness | 25.5 mm |
| Copper parts | Fins, cooling channels and pre-chambers |
Technical data cooler and pump
| Cold plate | Chrome-plated copper |
| Pump | Integrated Alphacool Core DC-LT 3 PWM 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 |
| Lighting | Blue LED |
Technical data tubes
| Length | 320 mm |
| Material | TPV tubing for flexible installation |
| Fittings | Rotatable 90° fittings at the CPU block |
Technical data fans
| Fans | 2 x Alphacool Core 120mm PWM |
| Fan speeds | Up to 2,500 RPM |
| Airflow | Up to 72.63 CFM per fan |
| Static pressure | Up to 2.42 mmH2O per fan |
Notes
- For cleaning, the manual has you remove the coolant, then clean the cooler with distilled water and Alphacool Core Loop Cleaning (13016).
- For refilling, the manual names Alphacool Ultra Pure Water (17313).
More technical data
| Maximum torque M2 thread | 0.13 Nm |
| Maximum torque M3 thread | 0.48 Nm |
| Maximum torque M4 thread | 1.12 Nm |
| LED current | 0.06 A |
| 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 |
| Fan: material | Synthetic material (PBT UL94V-0) |
| Fan: bearing type | Hydraulic bearing |
| Fan: rated voltage | 12 V DC |
| Fan: operating voltage | 7-14 V DC |
| Fan: start-up voltage | 7 V |
| Fan: rated current | 0.3 (max. 0.4) A |
| Fan: rated power | 3.6 (max. 4.8) W |
| Fan: noise level | 36.6 (max. 37.8) dBA |
| Fan: operating temperature | -10 to +55 degrees Celsius |
| Radiator: L x W x H | 272 x 120 x 25.5 mm (±3%) |
| Radiator: material threads | Brass |
| Radiator: material outer housing | Stainless steel |
| Radiator: pressure tested | 0.8 Bar |
| Thermal paste: volatilization rate (24 h at 200 °C) | Less than 0.5 % |
| Thermal paste: density | 3.2 g/cc (Test method ASTM D792) |
| Thermal paste: viscosity (mPa.s) | 150 to 200*10³ (Test method ASTM D2196) |
| Thermal paste: continuous using temperature (°C) | -40°C to 120°C |
| Thermal paste: breakdown voltage | 250 V/mil (Test method ASTM D149) |
| Thermal paste: thermal impedance | 0.1 +/- 0.01 °C·in²/W (Test method ASTM D5470) |
| Thermal paste: color | Gray |
| Fan: life expectancy | 50,000 h at 25 °C |
In the box
- 1x Alphacool Core 2 LT 240mm AIO CPU Cooler
- 2x Alphacool Core 120mm PWM Fans
- CPU mounting hardware
- 1g thermal paste
- 1x Putty tool
- 1x Y-Splitter 4-Pin to 2x 4-Pin PWM
- 8x M3x30mm Screws
- 8x M3x5mm Screws
- 1x Plug tool
Alphacool's manual for the Core 2 LT series is a PDF and covers the 240 and the 360 version. 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.
