A rack can have enough empty rack units and still be the wrong home for an AI server. The useful purchase question is not simply “will it fit?” It is “can this cabinet deliver the required power, remove the heat, and meet our agreed performance target when something fails?” This sizing guide gives you a reusable worksheet, a 256-GPU design example, and a facilities acceptance matrix.
The hardware anchor is NVIDIA DGX B200, not a generic Blackwell server or a GB200 rack. NVIDIA specifies eight B200 GPUs, a 10U chassis, and 14.3 kW maximum system power for this product.[1] All cluster totals below are hypothetical planning calculations, not measured consumption, benchmarks, or a certified electrical design. Have the equipment vendor and qualified facilities engineers approve the final installation.
