EngineeringIEEE Spectrum|March 24, 2026
IEEE Spectrum's deep-dive on what may be the most significant power architecture shift in data center history. At nearly 1 MW per AI rack, the energy losses from AC-to-DC conversion aren't acceptable anymore.
- Traditional compute racks draw about 10 kW each. AI racks approach 1 MW. That 100x increase breaks the economics of AC distribution
- Vertiv's 800V DC ecosystem for NVIDIA Vera Rubin Ultra Kyber will be commercially available in H2 2026
- Eaton is developing a medium-voltage solid-state transformer for DC power distribution
- Delta Electronics released 800V DC in-row 660 kW power racks with 480 kW embedded battery backup
- At GTC 2026, TI and Navitas demonstrated direct 800V-to-6V conversion, eliminating the traditional 48V intermediate bus
- OCP has a white paper on +/- 400VDC expected in the coming weeks







