Flopper.io GPU Comparison Sheet
October 17, 2026
flopper.io/compare/nvidia-b300-sxm-288gb-vs-nvidia-h100-sxm5-80gbNVIDIA B300 SXM 262GB vs NVIDIA H100 SXM5 80GB
Side by side datacenter GPU specifications from the Flopper.io database.
Overview
| NVIDIA B300 SXM 262GB | NVIDIA H100 SXM5 80GB | |
|---|---|---|
| FP32 TFLOPS | 75.0 | 67.0 |
| Memory | 263 GB | 80 GB |
| Memory Bandwidth | 8.0 TB/s | 3.4 TB/s |
| TDP | 1.4 kW | 700 W |
Performance by Precision
| Precision | NVIDIA B300 SXM 262GB peak TFLOPS (dense) | NVIDIA H100 SXM5 80GB peak TFLOPS (dense) |
|---|---|---|
| FP64 | 1.3 | 34.0 |
| FP64_TC Tensor Core | — | 67.0 |
| FP32 | 75.0 | 67.0 |
| TF32 | 1125.0 | 494.0 |
| BF16 | 2250.0 | 990.0 |
| FP16 | 2250.0 | 990.0 |
| FP8 | 4500.0 | 1979.0 |
| FP6 | 4500.0 | — |
| FP4 | 13500.0 | — |
| INT8 | 187.5 | 1979.0 |
Specifications
| NVIDIA B300 SXM 262GB | NVIDIA H100 SXM5 80GB | |
|---|---|---|
| Architecture | Blackwell Ultra | Hopper |
| Process Node | 4nm | 4nm |
| Launch Year | 2025 | 2022 |
| Form Factor | SXM | SXM |
| Memory Type | HBM3e | — |
| Interface Width | — | — |
| Interconnect | — | — |
| TDP | 1.4 kW | 700 W |
| FP32 Efficiency | 0.05 TFLOPS/W | 0.10 TFLOPS/W |