Product Compare
NVIDIA H800 PCIe 80 GB vs NVIDIA GeForce RTX 5080
| GPU | GPU | |
|---|---|---|
| Graphics Card | ||
| Release Date | Mar 2023 | Jan 2025 |
| Generation | Tesla Hopper | GeForce 50 |
| Type | AI GPU | Desktop |
| Bus Interface | PCIe 5.0 x16 | PCIe 5.0 x16 |
| Clock Speeds | ||
| Base Clock | 1095 MHz | 2295 MHz |
| Boost Clock | 1755 MHz | 2617 MHz |
| Memory Clock | 1593 MHz | 1875 MHz |
| Memory | ||
| Memory Size | 80GB | 16GB |
| Memory Type | HBM2e | GDDR7 |
| Memory Bus | 5120bit | 256bit |
| Bandwidth | 2039GB/s | 960.0GB/s |
| Render Config | ||
| SM Count | 114 | 84 |
| Shading Units | 14592 | 10752 |
| TMUs | 456 | 336 |
| ROPs | 24 | 112 |
| Tensor Cores | 456 | 336 |
| L1 Cache | 256 KB (per SM) | 128 KB (per SM) |
| L2 Cache | 50 MB | 64 MB |
| RT Cores | 84 | |
| Theoretical Performance | ||
| Pixel Rate | 42.12 GPixel/s | 293.1 GPixel/s |
| Texture Rate | 800.3 GTexel/s | 879.3 GTexel/s |
| FP16 (half) | 204.9 TFLOPS | 56.28 TFLOPS |
| FP32 (float) | 51.22 TFLOPS | 56.28 TFLOPS |
| FP64 (double) | 25.61 TFLOPS | 879.3 GFLOPS |
| Graphics Processor | ||
| GPU Name | GH100 | GB203 |
| Architecture | Hopper | Blackwell 2.0 |
| Foundry | TSMC | TSMC |
| Process Size | 4 nm | 5 nm |
| Transistors | 80 billion | 45.6 billion |
| Die Size | 814 mm² | 378 mm² |
| GPU Variant | GB203-400-A1 | |
| Board Design | ||
| TDP | 350W | 360W |
| Suggested PSU | 750 W | 750 W |
| Outputs | No outputs | 1x HDMI 2.1b3x DisplayPort 2.1b |
| Power Connectors | 1x 16-pin | 1x 16-pin |
| Graphics Features | ||
| DirectX | N/A | 12 Ultimate (12_2) |
| OpenGL | N/A | 4.6 |
| OpenCL | 3.0 | 3.0 |
| Vulkan | N/A | 1.4 |
| CUDA | 9.0 | 12.0 |
| Shader Model | N/A | 6.8 |