NVIDIA GeForce RTX 4090 D 24GB vs NVIDIA L40S 48GB
The L40S delivers 2.5x the FP8 throughput of the GeForce RTX 4090 D (733 vs 294 TFLOPS dense). The L40S also carries 24 GB more memory (48 GB vs 24 GB).
NVIDIA GeForce RTX 4090 D 24GB
Full specs →NVIDIA L40S 48GB
Full specs →Specifications
Performance (TFLOPS)
FLOPS by Precision
What actually differs
Both GPUs launched in 2023: the GeForce RTX 4090 D on Ada Lovelace and the L40S on Ada Lovelace.
Dense throughput for the GeForce RTX 4090 D against the L40S: FP64 1.1 vs 1.4 TFLOPS, FP32 74 vs 92 TFLOPS, FP16 147 vs 362 TFLOPS, FP8 294 vs 733 TFLOPS. Sparse figures, where the vendor publishes them, appear under each dense number in the performance table.
Memory is 24 GB against 48 GB. More memory per GPU means larger models fit before you have to shard across cards, which often matters more than raw TFLOPS for inference.
Power budgets are 425 W for the GeForce RTX 4090 D and 350 W for the L40S. At FP32 that works out to 0.17 against 0.26 TFLOPS per watt.
For LLM training and inference, weight the FP8 and FP16 rows and memory capacity most heavily. For scientific and HPC workloads, the FP64 row is the one to read.
Frequently asked questions
Is the GeForce RTX 4090 D faster than the L40S?
At FP8 precision the L40S reaches 733 TFLOPS dense against 294 TFLOPS for the GeForce RTX 4090 D. The performance table on this page lists every published precision for both GPUs.
Which has more memory, the GeForce RTX 4090 D or the L40S?
The L40S carries 48 GB of VRAM versus 24 GB for the GeForce RTX 4090 D.
How much power do the GeForce RTX 4090 D and the L40S draw?
The GeForce RTX 4090 D is rated at 425 W TDP and the L40S at 350 W. On FP32 throughput per watt, the L40S is the more efficient part.
Can I rent the GeForce RTX 4090 D or the L40S in the cloud?
Yes. Live cloud listings tracked by Flopper start at $0.40 per GPU hour. The rental pricing section on this page lists current providers and rates for both GPUs.
Where to Rent
NVIDIA GeForce RTX 4090 D 24GB
| Provider | Configuration | Price/GPU-hr | Checked | |
|---|---|---|---|---|
 Vast.ai | 1× GeForce RTX 4090 D 24GB Community | $0.40 | 2h ago | View → |
NVIDIA L40S 48GB
| Provider | Configuration | Price/GPU-hr | Checked | |
|---|---|---|---|---|
| Vast.ai | 1× L40S 48GB Community | $0.60 | 2h ago | View → |
 DataCrunch | 1× L40S 48GB Spot | $0.69 | 2h ago | View → |
 Nebius | 1× L40S 48GB Spot | $0.74 | 2h ago | View → |
 RunPod | 1× L40S 48GB Community | $0.79 | 2h ago | View → |
 Cudo Compute | 1× L40S 48GB | $0.87 | 2h ago | View → |
 Massed Compute | 1× L40S 48GB | $0.88 | 2h ago | View → |
 CoreWeave | 8× L40S 48GB Spot | $0.98 | 2h ago | View → |
| RunPod | 1× L40S 48GB | $1.09 | 2h ago | View → |
| DataCrunch | 1× L40S 48GB | $1.37 | 2h ago | View → |
 AceCloud | 1× L40S 48GB | $1.50 | 2h ago | View → |
 Crusoe | 1× L40S 48GB | $1.50 | 2h ago | View → |
| Nebius | 1× L40S 48GB | $1.55 | 2h ago | View → |
 DigitalOcean | 1× L40S 48GB | $1.57 | 2h ago | View → |
 Vultr | 1× L40S 48GB | $1.67 | 2h ago | View → |
 OVHcloud | 4× L40S 48GB | $1.80 | 2h ago | View → |
| CoreWeave | 8× L40S 48GB | $2.25 | 2h ago | View → |
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