Data centers are transitioning from AC to DC
spectrum.ieee.org
March 25, 2026
4 min read
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63/100
Summary
New chip architectures presented at the Nvidia GTC conference are driving a shift toward DC power configurations in hyperscale data centers. Companies like Delta, Vertiv, and Eaton are introducing designs that aim to replace inefficient AC to DC power conversions in response to the increasing demands of AI technology.
Key Takeaways
- The shift from AC to DC power configurations in hyperscale data centers is driven by the increasing power demands of AI infrastructure and advancements in power electronics.
- High-voltage DC power systems can transmit 85% more power through the same conductor size compared to traditional AC systems, resulting in improved efficiency and reduced copper requirements.
- The Mt. Diablo Initiative is an ongoing experiment in the Americas exploring 400 V DC rack power distribution, while higher voltage DC data centers are already operational in China.
- Vertiv plans to commercially release its 800 V DC ecosystem in the second half of 2026, integrating with NVIDIA's platforms.
Community Sentiment
Positives
- The transition to DC power in data centers could enhance efficiency, especially for AI training workloads that prioritize computing power over availability.
- Hot-plugging capabilities for rackmount units could revolutionize maintenance and uptime, allowing for more flexible and efficient data center operations.
Concerns
- Despite the potential advantages of DC power, the majority of data center equipment remains AC-driven, indicating a slow transition and limited mainstream adoption.
- Concerns about the safety and practicality of hot-plugging at high voltages suggest that the proposed changes may not be ready for widespread implementation.
