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HardwareLadder
AI GPU ladder

AMDAI GPU · OAM

MI325X

AMD Instinct MI325X is a CDNA 3 data-center accelerator with 256 GB HBM3E and 6 TB/s of memory bandwidth.

Ladder rank
#4
AI index (H100 SXM = 100)
153.8
Series
Instinct MI300

Specifications

Dense throughput, no sparsity
Architecture CDNA 3
Form factor OAM
Process TSMC 5 nm + 6 nm
FP16 / BF16 tensor (dense) 1,307.4 TFLOPS
FP8 tensor (dense) 2,614.9 TFLOPS
FP4 tensor (dense) —
Memory 256 GB HBM3E
Memory bandwidth 6 TB/s
Power 1000 W
Launch Oct 2024

AI index

Tensor × bandwidth

100 × √((1,307.4 ÷ 989.4) × (6 ÷ 3.35)) = 153.8

The AI index is the geometric mean of dense 16-bit tensor throughput and memory bandwidth, each relative to the H100 SXM. It is a spec-sheet comparison, not a measured benchmark.

Sources

2 references