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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.

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SpecAnthropic Claude Opus 4.7Frontier (OLCF-5)
Accelerator—AMD Instinct MI250X
Cabinets—74
Cache Discount Percent90—
Cache Read PER 1M USD0.5—
Claude Code Synergy Precision Bonus15—
Context Window Tokens M1—
Cores—9,066,176
CPU—AMD 3rd Gen EPYC 64C 2GHz
Current Opus ModelClaude Opus 5.5—
Current Opus Version5.5—
Installation Year—2,021
Interconnect—HPE Slingshot-11
Lifecycle Statuslegacy (still available)—
Location—DOE/SC/Oak Ridge National Laboratory
Manufacturer—HPE
MAX Output Tokens K128—
Model—HPE Cray EX235a
Power KW—24,607
Pricing Input PER 1M USD5—
Pricing Output PER 1M USD25—
Released2026-04-16—
Rmax Pflops—1,353
Rpeak Pflops—2,055.72
TOP Listed ModelClaude Fable 5.1—
TOP Listed Model Version5.1—
Top500 Rank Jun2026—3
Top500 Rank Nov2025—2
Version Decimal4.7—
Version Major4—
Version Minor7—