SoftBank Corp., ZutaCore and Hon Hai Technology Group ("Foxconn") today 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 two-phase DLC technology, on a rack scale, and conducted an operational demonstration and performance evaluation at its data center 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 centers. At the same time, reducing power consumption from the perspective of reducing carbon dioxide (CO2) emissions has become a pressing issue worldwide, requiring data centers 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 optimized for low power consumption at AI data centers.