GB300
NVIDIA's Blackwell Ultra rack generation (Grace CPU plus Blackwell Ultra GPUs) in NVL72 form; the density step between GB200 and the Rubin era.
Current numbers
~132 kW nominal; ~155 kW peakper HPE GB300 NVL72 rack — 132 kW nominal TDP and approximately 155 kW peak electrical design power; HPE recommends provisioning busways for 192 kW
~132–142 kW nominal; ~155 kW peakper GB300 NVL72 rack (up to ~155 kW peak); CPUs/GPUs/NVSwitch liquid, optics/storage air
~132–142 kW nominal; ~155 kW peakGB300 NVL72 rack TDP (to ~155 kW peak); ~90% heat to liquid, ~10% to air