| 规格 | AMD Instinct MI250X | AMD Instinct MI325X |
|---|
| 架构 | CDNA2 (双GCD双die封装, TSMC 6nm FinFET) | CDNA3 |
| 显存 | 128GB HBM2e (Full-Chip ECC, 双die合计) | 256 GB |
| 显存带宽 | 3.2 TB/s (1.6TB/s×双GCD) | 6 TB/s |
| 显存位宽 | 8192bit (双die合计) | 8192-bit |
| 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 | — |
| 互联 | Infinity Fabric 8链 (峰值100GB/s/链) / PCIe 4.0 x16 | PCIe® 5.0 x16 |
| 发布年 | 2021 (官方Launch Date 11/08/21) | — |
| 形态 | OAM Module, Passive OAM (被动散热) | OAM Module |
| 显存类型 | — | HBM3E |
| 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 |
| Infinity Fabric Links | — | 8 |
| Infinity Fabric带宽 | — | 128 GB/s |
| 流处理器 | — | 19,456 |
| 末级缓存LLC | — | 256 MB |
| 制程 | — | TSMC 5nm | 6nm FinFET |