Flopper.io GPU Comparison Sheet
September 9, 2026
flopper.io/compare/nvidia-l40-48gb-vs-nvidia-geforce-rtx-4090-24gbNVIDIA L40 48GB vs NVIDIA GeForce RTX 4090 24GB
Side by side datacenter GPU specifications from the Flopper.io database.
Overview
| NVIDIA L40 48GB | NVIDIA GeForce RTX 4090 24GB | |
|---|---|---|
| FP32 TFLOPS | 90.5 | 82.6 |
| Memory | 48 GB | 24 GB |
| Memory Bandwidth | 864 GB/s | 1.0 TB/s |
| TDP | 300 W | 450 W |
Performance by Precision
| Precision | NVIDIA L40 48GB peak TFLOPS (dense) | NVIDIA GeForce RTX 4090 24GB peak TFLOPS (dense) |
|---|---|---|
| FP64 | — | 1.3 |
| FP32 | 90.5 | 82.6 |
| TF32 | 90.5 | 82.6 |
| BF16 | 181.1 | 165.2 |
| FP16 | 181.1 | 165.2 |
| FP8 | 362.0 | 330.3 |
| FP6 | — | — |
| FP4 | — | — |
| INT8 | 362.0 | 660.6 |
| INT4 | 724.0 | — |
Specifications
| NVIDIA L40 48GB | NVIDIA GeForce RTX 4090 24GB | |
|---|---|---|
| Architecture | Ada Lovelace | Ada Lovelace |
| Process Node | 4nm | 4nm |
| Launch Year | 2023 | 2022 |
| Form Factor | PCIe | PCIe |
| Memory Type | GDDR6 | — |
| Interface Width | — | — |
| Interconnect | — | — |
| TDP | 300 W | 450 W |
| FP32 Efficiency | 0.30 TFLOPS/W | 0.18 TFLOPS/W |