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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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SpecEl CapitanAnthropic Claude Opus 4.7
AcceleratorAMD Instinct MI300A (APU)—
Cache Discount Percent—90
Cache Read PER 1M USD—0.5
Claude Code Synergy Precision Bonus—15
Context Window Tokens M—1
Cores11,340,000—
CPUAMD 4th Gen EPYC 24C 1.8GHz—
Current Opus Model—Claude Opus 5.5
Current Opus Version—5.5
Hpcg Tflops17,406—
Installation Year2,024—
InterconnectHPE Slingshot-11—
Lifecycle Status—legacy (still available)
LocationDOE/NNSA/Lawrence Livermore National Laboratory—
ManufacturerHPE—
MAX Output Tokens K—128
ModelHPE Cray EX255a—
Power KW29,684.62—
Pricing Input PER 1M USD—5
Pricing Output PER 1M USD—25
Released—2026-04-16
Rmax Pflops1,809—
Rpeak Pflops2,821.1—
TOP Listed Model—Claude Fable 5.1
TOP Listed Model Version—5.1
Top500 Jun2026 NO1LineShine (National Supercomputing Centre in Shenzhen, China)—
Top500 Rank Jun20262—
Top500 Rank Nov20241—
Top500 Rank Nov20251—
Version Decimal—4.7
Version Major—4
Version Minor—7