alphacool 14436 nexxxos st20 hpe full copper 240mm radiator

This slim 240 mm radiator from Alphacool's NexXxoS HPE Full Copper series takes two 120 mm fans and is 20 mm thick, in black. All water-carrying parts and the cooling fins are copper, and the two ports are G1/4.

Properties

• Fans: 2x one-sided / 4x both-sided, 120 mm
• Size (L x W x H): 270 x 120 x 20 mm
• Thickness: 20 mm
• Ports: 2x G1/4 IN/OUT
• Material: Copper fins, pre-chambers and channels, brass threads, stainless steel housing
• Color: Black

NexXxoS Full Copper

Alphacool says it has dominated the market with the NexXxoS Full Copper radiator series for more than a decade, and it describes "our extensive portfolio of radiator variants" as unique in the world. The manufacturing process is unique just like the portfolio, it says, because it "allows us" to produce all water-carrying parts and the cooling fins out of pure copper. As a result, Alphacool claims, the series offers the highest thermal conductivity of any radiator on the market. Thanks to what it calls their exceptional performance, the radiators can easily dissipate even extremely high waste heat and have become essential in many areas of the cooling industry.

The next step in evolution: NexXxoS HPE Full Copper Radiator

The radiator uses the same materials as previous NexXxoS models, but takes it a step further technically. Due to the condensed internal structure, the number of water channels and copper fins could be increased. Thus a larger volume of water is in direct contact with the cooling fins, and Alphacool says the heat transfer is enormously improved. The higher number of fin rows and their shortening also makes much more efficient use of the cooling surface, in its words. The data sheet puts that at 1.2x increased water throughput and 20% more efficient heat transfer compared to the NexXxoS standard, with 100% of the internal structure made of copper.

Alphacool reports comparison tests with the conventional NexXxoS radiator, which it says have shown that a performance increase of 4.5K is possible when using the HPE radiator. At higher ambient temperatures and higher fan speeds, it adds, the performance gap with the normal NexXxoS radiators even increases progressively, reaching up to 6K.

Technical data radiator

• L x W x H: 270 x 120 x 20 mm
• Quantity of cooling channels: 14
• Material cooling fins, pre-chambers & channels: copper
• Material threads: brass
• Material outer housing: stainless steel
• Threads: 2x G1/4 IN/OUT (max. 5 mm thread length)
• Possible fan size: 120 mm
• Possible fan assembly: 2x one-sided / 4x both-sided
• Thread size fan mounting: M3
• Pressure tested: 0.8 Bar
• Maximum working temperature: 60 °C
• Fin density: 19 FPI
• Weight: 454 g
• Color: black

Notes

• Use only clear, transparent water cooling fluids. Alphacool warns that the particles and additives in pastel liquids can clog and permanently damage water cooling products such as radiators, pumps, coolers and hoses, which can also void the manufacturer's warranty.

In the box

• 1x Alphacool NexXxoS HPE-20 Full Copper 240mm Radiator, black
• 8x M3x5 case mounting screws
• 8x M3x30 fan screws
• 1x Allen key
• 1x Plug tool