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GPU Comparison

AMD Instinct MI325X vs AMD Instinct MI355X

How the AMD Instinct MI325X and AMD Instinct MI355X compare across memory, compute, power and form factor, with the stronger figure highlighted on each row.

Specification CDNA 3 AMD Instinct MI325X NVIDIA alternative: NVIDIA H200 SXM → CDNA 4 AMD Instinct MI355X NVIDIA alternative: NVIDIA B200 →
Pricing
Price Not sold by NVNexus Not sold by NVNexus
Overview
Architecture AMD CDNA 3 AMD CDNA 4
Memory
Memory 256 GB HBM3E 288 GB HBM3E
Memory Bandwidth 6 TB/s 8 TB/s
Memory Interface 8192-bit 8192-bit
Compute
Stream Processors (AMD) 19,456 (304 CUs) 16,384 (256 CUs)
Matrix Cores / AI Accelerators (AMD) 1,216 1,024
FP32 163.4 TFLOPS (matrix) 157.3 TFLOPS
FP64 Tensor 163.4 TFLOPS (matrix) 78.6 TFLOPS
TF32 Tensor 653.7 TFLOPS / 1,307 (sparse) –
FP16/BF16 Tensor 1,307 TFLOPS / 2,615 (sparse) 2.5 PFLOPS / 5 (sparse) TFLOPS
FP8 Tensor 2,615 TFLOPS / 5,230 (sparse) 5 PFLOPS / 10.1 (sparse) TFLOPS
FP4 Tensor – 10.1 PFLOPS TFLOPS
INT8 Tensor 2,615 TOPS / 5,230 (sparse) –
Platform
Interface PCIe Gen5 x16 PCIe Gen5 x16
NVLink / Infinity Fabric Infinity Fabric, 896 GB/s aggregate Infinity Fabric, 1,075 GB/s aggregate
TDP 1000W 1400W
Form Factor OAM module (8-GPU platform) OAM module (8-GPU platform)
Cooling Passive (chassis airflow) Liquid cooled
Transistors 153 billion 185 billion
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