Flex has developed a new power shelf system to meet the increased demands of AI infrastructure and AI factories as they move to 800-VDC data center power architectures. The Flex power shelf system is designed to provide high efficiency for NVIDIA GB300 NVL72 rack-scale systems to support the deployment of 1 megawatt (MW) IT racks.
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“As AI workloads push rack power systems to new levels, Flex is at the forefront of enabling data center operators to overcome increasing power, heat, and scale challenges,” said Chris Butler, president, Critical and Embedded Power at Flex, in a statement. “Our collaboration with Nvidia enables hyperscale and colocation customers to deploy next-generation AI infrastructure with greater speed and efficiency as they scale toward 1-MW racks and 800-VDC data center power infrastructure.”
Flex unveiled the power shelf system at the 2025 OCP APAC Summit. It is a high-density DC power distribution solution that delivers up to 33 kW per shelf in a compact, industry-standard footprint. It features six power supply units in a 3+3 redundant configuration and an advanced power shelf controller, and achieves peak efficiency of 97.5 percent at half-load. “This reduces power conversion losses by more than 60 percent compared to conventional systems, lowering heat output, cooling demands, and energy costs,” Flex said.
The power shelf system is tailored for the Nvidia GB300 NVL72 rack-scale platform that features 72 Nvidia Blackwell Ultra GPUs, supporting high-performance GPU- and CPU-based workloads for AI factories. Nvidia announced the next evolution of its Blackwell AI factory platform at GTC 2025.
Flex said the new power shelf will pave the way for 800-VDC data center power infrastructure. The company plans full-scale production of 800-VDC power components to coincide with the release of Nvidia Kyber rack-scale systems.
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