PSU · Power Supply Unit
The component that converts incoming AC or DC into the regulated voltages a server or GPU node consumes.
Current numbers
800 VDC two-wire PSU option (isolated from PE)Mt. Diablo 1.0.0: only the two-wire PSU option is isolated from PE; the ±400 V output is midpoint-bonded (Ch 4.7)
Base 10 days; stress 20 daysCommodity PSU delivery interval: base and stress assumptions, separate from the demand-observation window
65 J/GPUrack-level capacitor energy storage in GB300 NVL72 power shelves (NVIDIA design figure); ~half the PSU volume is capacitance