Side-by-side, with the numbers that matter.

Two rigs, one table. Higher numbers win in cobalt; TDP and price flip.

Rig A

AWS · cloud-model

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Rig B

AMD · accelerator

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0 of 27 fields comparable

Spec	AWS Trainium2	AMD Instinct MI325X
Bf16 Matrix Tflops Dense	—	1,307.4
Bf16 Tflops PER Chip	667	—
Chips PER Trn2 Instance	16	—
Chips PER Ultraserver	64	—
Compute Units	—	304
Form factor	—	OAM
Fp16 Matrix Tflops Dense	—	1,307.4
Fp32 Vector Tflops	—	163.4
Fp64 Matrix Tflops	—	163.4
FP8 Dense Petaflops PER Chip	1.3	—
FP8 Matrix Tflops Dense	—	2,614.9
FP8 Matrix Tflops Sparse	—	5,229.8
FP8 Sparse Petaflops PER Chip	5.2	—
HBM (GB)	—	256
HBM Bandwidth TB S PER Chip	2.9	—
HBM Type	—	HBM3E
Hbm3e Capacity GB PER Chip	96	—
INT8 TOPS (dense)	—	2,614.9
Memory bandwidth (TB/s)	—	6
Neuroncores PER Chip	8	—
Pcie GEN	—	5
TBP Watts	—	1,000
Tf32 Matrix Tflops Dense	—	653.7
Trn2 Instance FP8 Petaflops	20.8	—
Ultraserver FP8 Petaflops	83.2	—
Ultraserver Total HBM Bandwidth TB S	185	—
Ultraserver Total HBM TB	6	—