| 规格 | NVIDIA A800 | NVIDIA H800 |
|---|
| 架构 | NVIDIA Ampere | NVIDIA Hopper |
| 显存 | 80 GB HBM2e | 80 GB HBM2e |
| 显存带宽 | 1,935 GB/s | 2 TB/sec |
| FP64算力 | 9.7 TFLOPS | — |
| FP64 Tensor Core | 19.5 TFLOPS | — |
| FP32算力 | 19.5 TFLOPS | 51 TFLOPS |
| TF32 Tensor Core | 156 TFLOPS | — |
| FP16算力 | 312 TFLOPS | — |
| INT8算力 | 624 TOPS | — |
| Tensor核心 | 512 third-generation Tensor Cores per GPU | 456 fourth-generation Tensor Cores per GPU |
| CUDA核心 | 8192 FP32 CUDA Cores per GPU | 14592 FP32 CUDA Cores per GPU |
| 互联 | NVLink: 400 GB/s | NVLink: 400 GB/s |
| 系统接口 | PCIe Gen 4, x16 lanes | PCIe Gen 5, x16 lanes |
| 形态 | PCIe full height/length, double width | PCIe full height/length, dual slot |
| MIG切片 | Up to 7 GPU instances, 10GB each | Up to 7 GPU instances |
| 功耗TDP | 300 W | 350 W |
| ECC | Yes | Yes |
| 发布年 | 2022 | 2023 |
| 显存(94GB版) | — | 94 GB HBM3 |
| 显存带宽(94GB版) | — | 3.9 TB/sec |