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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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SpecAMD Instinct MI355XAnthropic Claude Opus 4.7
Bf16 Matrix Pflops Dense2.5—
Bf16 Matrix Pflops Sparse5—
Cache Discount Percent—90
Cache Read PER 1M USD—0.5
Claude Code Synergy Precision Bonus—15
Compute Units256—
Context Window Tokens M—1
Coolingdirect liquid cooling (air-cooled option available)—
Current Opus Model—Claude Opus 5.5
Current Opus Version—5.5
Form factorOAM—
Fp16 Matrix Pflops Dense2.5—
Fp16 Matrix Pflops Sparse5—
Fp32 Vector Tflops157.3—
Fp64 Matrix Tflops78.6—
FP8 Matrix Pflops Dense5—
FP8 Matrix Pflops Sparse10.1—
HBM (GB)288—
HBM TypeHBM3E—
Helios Gpus PER Rack72—
Lifecycle Status—legacy (still available)
MAX Output Tokens K—128
Memory bandwidth (TB/s)8—
Mxfp4 Matrix Pflops10.1—
Mxfp6 Matrix Pflops10.1—
Pcie GEN5—
Pricing Input PER 1M USD—5
Pricing Output PER 1M USD—25
Process Node NM3—
Released—2026-04-16
Successor Cdna Version5—
Successor FamilyAMD Instinct MI400 Series (MI455X)—
Successor Launch2026-07-23—
Successor Mi455x Bandwidth TB S23.3—
Successor Mi455x Hbm4 GB432—
TBP Watts1,400—
TOP Listed Model—Claude Fable 5.1
TOP Listed Model Version—5.1
Version Decimal—4.7
Version Major—4
Version Minor—7