| 规格 | AMD Instinct MI325X | AMD Instinct MI250X |
|---|
| 架构 | CDNA3 | CDNA2 (双GCD双die封装, TSMC 6nm FinFET) |
| 显存 | 256 GB | 128GB HBM2e (Full-Chip ECC, 双die合计) |
| 显存类型 | HBM3E | — |
| 显存位宽 | 8192-bit | 8192bit (双die合计) |
| 显存带宽 | 6 TB/s | 3.2 TB/s (1.6TB/s×双GCD) |
| FP8算力 | 2.61 PFLOPs | — |
| FP16算力 | 1.3 PFLOPs | — |
| FP32算力 | 163.4 TFLOPs | — |
| FP64算力 | 81.7 TFLOPs | — |
| INT8算力 | 2.6 POPs | — |
| 功耗TBP | 1000W Peak | — |
| 互联 | PCIe® 5.0 x16 | Infinity Fabric 8链 (峰值100GB/s/链) / PCIe 4.0 x16 |
| Infinity Fabric Links | 8 | — |
| Infinity Fabric带宽 | 128 GB/s | — |
| 流处理器 | 19,456 | — |
| 形态 | OAM Module | OAM Module, Passive OAM (被动散热) |
| 末级缓存LLC | 256 MB | — |
| 制程 | TSMC 5nm | 6nm FinFET | — |
| 算力 | — | FP64 47.9 / FP64 Matrix 95.7 / FP32 47.9 / FP16·BF16 383 / INT8·INT4 383 TOPS (TFLOPS, 双die合计, Peak Engine Clock 1700MHz) |
| 计算单元 | — | 220 CU / 14080 流处理器 (双GCD合计) |
| 功耗 | — | 500W (TDP) | 560W Peak |
| 发布年 | — | 2021 (官方Launch Date 11/08/21) |