Side-by-side, with the numbers that matter.

Two rigs, one table. Higher numbers win in cobalt; TDP and price flip.

Rig A

OpenAI · cloud-model

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Rig B

NVIDIA · workstation

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0 of 33 fields comparable

Spec	OpenAI GPT-5	NVIDIA DGX B200
Bluefield3 Dpus	—	2
Codex Synergy Precision Bonus	12	—
CPU Base GHZ	—	2.1
CPU Count	—	2
CPU MAX Boost GHZ	—	4
CPU Model	—	Intel Xeon Platinum 8570
FP4 Pflops Dense	—	72
FP4 Pflops Sparse	—	144
FP8 Pflops	—	72
Gpt5 Context Window Tokens K	400	—
Gpt5 Input PER 1M USD	1.25	—
Gpt5 Output PER 1M USD	10	—
Gpt5 Snapshot	gpt-5-2025-08-07	—
Gpt6 Astra Launch	2026-09-03	—
Gpus	—	8
HBM Bandwidth TB S	—	64
Height MM	—	444
Internal Storage TB	—	30.72
Length MM	—	897.1
MAX Power KW	—	14.3
Networking Osfp Ports	—	4
Nvswitch Count	—	2
OS	—	NVIDIA DGX OS / Ubuntu
OS Storage TB	—	3.8
PER Port Gbps MAX	—	400
Rack Units	—	10
System Memory GB Default	—	2,048
System Memory GB MAX	—	4,096
Total CPU Cores	—	112
Total Hbm3e GB	—	1,440
Total Nvlink Bandwidth TB S	—	14.4
Version Major	5	—
Width MM	—	482.2