Flopper.io GPU Comparison Sheet
October 23, 2026
flopper.io/compare/nvidia-l40-48gb-vs-nvidia-rtx-4000-sff-ada-20gbNVIDIA L40 48GB vs NVIDIA RTX 4000 SFF Ada 20GB
Side by side datacenter GPU specifications from the Flopper.io database.
Overview
| NVIDIA L40 48GB | NVIDIA RTX 4000 SFF Ada 20GB | |
|---|---|---|
| FP32 TFLOPS | 90.5 | 19.2 |
| Memory | 48 GB | 20 GB |
| Memory Bandwidth | 864 GB/s | 280 GB/s |
| TDP | 300 W | 70 W |
Performance by Precision
| Precision | NVIDIA L40 48GB peak TFLOPS (dense) | NVIDIA RTX 4000 SFF Ada 20GB peak TFLOPS (dense) |
|---|---|---|
| FP64 | — | 0.3 |
| FP32 | 90.5 | 19.2 |
| TF32 | 90.5 | — |
| BF16 | 181.1 | — |
| FP16 | 181.1 | — |
| FP8 | 362.0 | 153.4 |
| FP6 | — | — |
| FP4 | — | — |
| INT8 | 362.0 | — |
| INT4 | 724.0 | — |
Specifications
| NVIDIA L40 48GB | NVIDIA RTX 4000 SFF Ada 20GB | |
|---|---|---|
| Architecture | Ada Lovelace | Ada Lovelace |
| Process Node | 4nm | 4nm |
| Launch Year | 2023 | 2023 |
| Form Factor | PCIe | PCIe |
| Memory Type | GDDR6 | GDDR6 |
| Interface Width | — | 160-bit |
| Interconnect | — | — |
| TDP | 300 W | 70 W |
| FP32 Efficiency | 0.30 TFLOPS/W | 0.27 TFLOPS/W |