| 规格 | NVIDIA GeForce RTX 4090 | NVIDIA H800 |
|---|
| 架构 | Ada Lovelace (AD102-300, 128 SM) | NVIDIA Hopper |
| 显存 | 24GB GDDR6X | 80 GB HBM2e |
| 显存带宽 | 1008GB/s (21Gbps x 384bit) | 2 TB/sec |
| 显存位宽 | 384bit | — |
| 算力 | FP32 82.6 TFLOPS (官方发布口径, 现页四舍五入标83) / Tensor 1321 AI TOPS (FP8稀疏) / RT 191 TFLOPS | — |
| CUDA核心 | 16384 (128 SM) / Tensor Core 512 (四代) / RT Core 128 (三代) | 14592 FP32 CUDA Cores per GPU |
| 功耗 | 450W TGP (平均游戏315W, 建议系统电源850W) | — |
| 互联 | PCIe Gen4 x16 (不支持NVLink) | NVLink: 400 GB/s |
| 发布年 | 2022 (2022-09-20 GTC发布, 2022-10-12开售, MSRP $1599) | 2023 |
| 频率 | Base 2.23GHz / Boost 2.52GHz | — |
| 工艺 | TSMC 4N, 763亿晶体管, 608.5mm² (AD102 满血144SM, 4090启用128) | — |
| 媒体引擎 | 2x 第八代NVENC / 1x 第五代NVDEC, AV1编解码 | — |
| 显示输出 | HDMI 2.1a x1 + DisplayPort 1.4a x3, 4K240/8K60(DSC) | — |
| 形态 | FE三槽 304x137mm, 供电 3x8pin转接或12VHPWR(450W Gen5) | PCIe full height/length, dual slot |
| CUDA算力等级 | Compute Capability 8.9 | — |
| 显存(94GB版) | — | 94 GB HBM3 |
| 显存带宽(94GB版) | — | 3.9 TB/sec |
| FP32算力 | — | 51 TFLOPS |
| Tensor核心 | — | 456 fourth-generation Tensor Cores per GPU |
| 系统接口 | — | PCIe Gen 5, x16 lanes |
| MIG切片 | — | Up to 7 GPU instances |
| 功耗TDP | — | 350 W |
| ECC | — | Yes |