PSU · Power Supply Unit
The component that converts incoming AC or DC into the regulated voltages a server or GPU node consumes.
Current numbers
33 kWper ORV3 HPR power shelf, 50 V nominal (~674 A max); 6–8 shelves per GB200-class rack; PSU ≥97.5% efficient
Base 10 days; stress 20 daysCommodity PSU delivery interval: base and stress assumptions; separate from demand-observation exposure
~400 J/GPUVera Rubin power-shelf PSU capacitor energy provisioned for per-transient smoothing at the rack — the layer beneath any BESS state-of-charge loop an agent would be allowed to touch