Flopper.io GPU Comparison Sheet
September 1, 2026
flopper.io/compare/nvidia-a100-sxm4-80gb-vs-nvidia-a100-pcie-40gbNVIDIA A100 SXM4 80GB vs NVIDIA A100 PCIe 40GB
Side by side datacenter GPU specifications from the Flopper.io database.
Overview
| NVIDIA A100 SXM4 80GB | NVIDIA A100 PCIe 40GB | |
|---|---|---|
| FP32 TFLOPS | 19.5 | 19.5 |
| VRAM | 80 GB | 40 GB |
| Memory Bandwidth | 2.0 TB/s | 1.6 TB/s |
| TDP | 400 W | 250 W |
Performance by Precision
| Precision | NVIDIA A100 SXM4 80GB peak TFLOPS (dense) | NVIDIA A100 PCIe 40GB peak TFLOPS (dense) |
|---|---|---|
| INT8 | 624.0 | 624.0 |
| INT4 | 1248.0 | 1248.0 |
| FP16 | 312.0 | 312.0 |
| BF16 | 312.0 | 312.0 |
| TF32 | 156.0 | 156.0 |
| FP32 | 19.5 | 19.5 |
| FP64 | 9.7 | 9.7 |
Specifications
| NVIDIA A100 SXM4 80GB | NVIDIA A100 PCIe 40GB | |
|---|---|---|
| Architecture | Ampere | Ampere |
| Process Node | 7nm | 7nm |
| Launch Year | 2020 | 2020 |
| Form Factor | SXM | PCIe |
| Memory Type | — | — |
| Interface Width | — | — |
| Interconnect | — | — |
| TDP | 400 W | 250 W |
| FP32 Efficiency | 0.05 TFLOPS/W | 0.08 TFLOPS/W |