For GS, building AI data centers is becoming less about finding more power and more about finding what comes next, gathering seven startups Tuesday to pitch technologies spanning electricity, memory, cooling and computing. GS Ventures held its 2026 Tech Day at GS Tower in Gangnam, Seoul, bringing together six companies in its investment portfolio and one additional startup focused on artificial intelligence (AI) data center technologies. Executives from GS Energy, GS Caltex, GS E&C, GS E&R and GS Global attended, along with representatives of participating startups. The companies presented technologies covering much of the infrastructure needed to keep AI data centers running, from stable power supplies to graphics processing unit (GPU) cloud operations. Synergy introduced a hydrogen fuel cell solution for data centers, drawing on technology developed for ships and maritime transportation, while Exina presented intelligent memory based on Compute Express Link, or CXL, designed to ease data-processing bottlenecks. CoolMicro and SDT presented liquid-cooling systems, with one using direct-to
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