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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 24 fields comparable

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SpecOpenAI GPT-5 CoreAMD Instinct MI300X
Bf16 Matrix Tflops Dense1,307.4
Codex Synergy Precision Bonus12
Compute Units304
Context Window Tokens M2
Form factorOAM
Fp16 Matrix Tflops Dense1,307.4
Fp32 Vector Tflops163.4
Fp64 Matrix Tflops163.4
Fp64 Vector Tflops81.7
FP8 Matrix Tflops Dense2,614.9
FP8 Matrix Tflops Sparse5,229.8
HBM (GB)192
HBM TypeHBM3
INT8 TOPS (dense)2,614.9
Matrix Cores1,216
Memory bandwidth (TB/s)5.3
Pcie GEN5
Pricing Input PER 1M USD12
Pricing Output PER 1M USD60
Process Node NM5
TBP Watts750
Tf32 Matrix Tflops Dense653.7
Tf32 Matrix Tflops Sparse1,307.4
Version Major5
Compare · OpenAI GPT-5 Core vs AMD Instinct MI300X · MadCoolStuff