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MCS · Rigs · Compare

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

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

0 of 21 fields comparable

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SpecOpenAI GPT-5Frontier (OLCF-5)
Accelerator—AMD Instinct MI250X
Cabinets—74
Codex Synergy Precision Bonus12—
Cores—9,066,176
CPU—AMD 3rd Gen EPYC 64C 2GHz
Gpt5 Context Window Tokens K400—
Gpt5 Input PER 1M USD1.25—
Gpt5 Output PER 1M USD10—
Gpt5 Snapshotgpt-5-2025-08-07—
Gpt6 Astra Launch2026-09-03—
Installation Year—2,021
Interconnect—HPE Slingshot-11
Location—DOE/SC/Oak Ridge National Laboratory
Manufacturer—HPE
Model—HPE Cray EX235a
Power KW—24,607
Rmax Pflops—1,353
Rpeak Pflops—2,055.72
Top500 Rank Jun2026—3
Top500 Rank Nov2025—2
Version Major5—