I N D U S T R Y I N T E L L I G E N C E
oftBank, ZutaCore and
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Hon Hai Technology Group( Foxconn) have announced they implemented ZutaCore’ s two-phase DLC( Direct Liquid Cooling) technology in an AI server using NVIDIA accelerated computing, making it the world’ s first implementation of ZutaCore’ s two-phase DLC( Direct Liquid Cooling) technology using NVIDIA H200 GPUs.
In addition, SoftBank designed and developed a rack-integrated solution that integrates each component of the server, including cooling equipment with
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THIS GROUNDBREAKING COLLABORATION HIGHLIGHTS THE TRANSFORMATIVE POTENTIAL OF OUR WATERLESS DLC COOLING TECHNOLOGY TO DELIVER UNMATCHED EFFICIENCY. reducing carbon dioxide( CO 2
) emissions has become a pressing issue worldwide, requiring data centres to become more efficient, consume less power, and introduce innovative heat removal solutions. Since May 2024, SoftBank has been collaborating with ZutaCore, a global leader in the development and business deployment of two-phase DLC technology, to develop solutions optimised for low power consumption at AI data centres.
SoftBank, ZutaCore and Foxconn will continue their efforts to achieve higher efficiency and lower power consumption in AI data centres using NVIDIA accelerated computing, and collaborate on the development of rack-integrated solutions optimised with two-phase DLC technology for practical use and deployment in the global market.
Features of rack-integrated solution optimised with two-phase DLC technology:
1. Plug and Play solution
By integrating server components such as cooling equipment equipped with 2-phase DLC technology, which conventionally had to be optimised individually, on a rack scale, it is possible to provide a‘ Plug & Play’ solution that can be used immediately by simply connecting the equipment.
This makes it easy and simple to install in AI data centres.
2. Innovative 2-phase DLC cooling system
ZutaCore’ s two-phase DLC technology, which cools the chipsets( CPUs, GPUs, memory, etc.) that are the heat sources in the server by bringing them into contact with a cold plate, circulates a special insulating heat transfer( dielectric) fluid with a low boiling point in the cold plate and uses heat absorption during the phase change from liquid to gas caused by the heat source.
Efficient cooling is achieved through repeated evaporation and condensation. In addition, the water temperature can be maintained at a higher temperature than in conventional water-cooled facilities, which improves the heat transport capacity of the water used for cooling and reduces the flow rate of water to achieve the required cooling effect.
This makes it possible to reduce the pressure of the pump that delivers the water for cooling, contributing to lower power consumption.
Furthermore, the use of insulating heat transfer fluid prevents serious damage two-phase DLC technology, on a rack scale, and conducted an operational demonstration and performance evaluation at its data centre in February 2025. The demonstration results indicated the solution passed NVIDIA’ s temperature test( NVQual), thereby confirming the compatibility, stability and reliability of this rack-integrated solution. The solution also achieved pPUE( partial Power Usage Effectiveness) of 1.03( actual measured value) per rack for cooling efficiency.
With the spread and increased adoption of AI, demand for AI servers and other computing resources is expected to expand significantly, further increasing power consumption at data centres. At the same time, reducing power consumption from the perspective of
24 www. intelligentdatacentres. com