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NVIDIA GeForce RTX 4090 D 24GB vs NVIDIA L40 48GB

The L40 delivers 23% more FP8 throughput than the GeForce RTX 4090 D (362 vs 294 TFLOPS dense). The L40 also carries 24 GB more memory (48 GB vs 24 GB).

GeForce RTX 4090 D: Ada Lovelace, 2023 L40: Ada Lovelace, 2023
FP8 dense lead
+23%
L40: 362 vs 294 TFLOPS
Memory
24 vs 48 GB
24 GB more for the L40
TDP
425 W vs 300 W
L40 draws 125 W less
See rental pricing from $0.46/hr Download comparison sheet

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NVIDIA GeForce RTX 4090 D 24GB vs NVIDIA L40 48GB

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NVIDIA GeForce RTX 4090 D 24GB

Full specs →

What is the NVIDIA GeForce RTX 4090 D?

The GeForce RTX 4090 D is a GPU from NVIDIA on the Ada Lovelace architecture, an accelerator for AI training, inference and high-performance computing. It is a PCIe add-in card, so it fits standard servers and workstations. GeForce RTX 4090 D full specifications →

Can I rent the GeForce RTX 4090 D in the cloud?

Flopper is not tracking any live rental listings for the GeForce RTX 4090 D yet. The provider directory lists the clouds that rent comparable accelerators on demand. GPU cloud providers →

How does the GeForce RTX 4090 D compare with other accelerators?

This page sets the GeForce RTX 4090 D against the L40. Both parts launched in the same year. Both are NVIDIA parts, and both ship as a PCIe card, so they fit the same class of system. The compare tool builds the same comparison for any two parts in the catalogue. All GPU comparisons →

Where do the GeForce RTX 4090 D figures come from?

Every GeForce RTX 4090 D figure on this page traces to NVIDIA's own datasheet or specification table. How Flopper verifies specifications →

NVIDIA L40 48GB

Leads on FP8 Full specs →

What is the NVIDIA L40?

The L40 is a GPU from NVIDIA on the Ada Lovelace architecture, an accelerator for AI training, inference and high-performance computing. It is a PCIe add-in card, so it fits standard servers and workstations. L40 full specifications →

Can I rent the L40 in the cloud?

Yes. Cloud providers tracked by Flopper rent the L40 by the hour, and the pricing page compares their current rates and the price history side by side. L40 rental prices →

How does the L40 compare with other accelerators?

This page sets the L40 against the GeForce RTX 4090 D. Both parts launched in the same year. Both are NVIDIA parts, and both ship as a PCIe card, so they fit the same class of system. The compare tool builds the same comparison for any two parts in the catalogue. All GPU comparisons →

Where do the L40 figures come from?

Every L40 figure on this page traces to NVIDIA's own datasheet or specification table. How Flopper verifies specifications →

Specifications

GeForce RTX 4090 D
L40
Architecture
Ada LovelaceAda Lovelace
Launch Year
20232023
Form Factor
PCIePCIe
Memory
24 GB48 GB
Memory Bandwidth
—864 GB/s
TDP
425 W300 W
Process Node
4nm4nm

Performance (TFLOPS)

GeForce RTX 4090 D
L40
1.1 TFLOPS No verified data available
74 TFLOPS 91 TFLOPS
74 TFLOPS
sparse not published
91 TFLOPS
181 TFLOPS sparse
147 TFLOPS
sparse not published
181 TFLOPS
362 TFLOPS sparse
147 TFLOPS
sparse not published
181 TFLOPS
362 TFLOPS sparse
294 TFLOPS
sparse not published
362 TFLOPS
724 TFLOPS sparse
FP6
No verified data available No verified data available
No verified data available No verified data available
588 TOPS
sparse not published
362 TOPS
724 TOPS sparse

Figures are dense. Where a vendor publishes a figure it sits under the dense one and never decides a winner. Hover any precision for its definition, or read the GPU glossary.

FLOPS by Precision

What actually differs

Both launched in 2023, the GeForce RTX 4090 D on Ada Lovelace and the L40 on Ada Lovelace.

The L40 carries 24 GB more memory (48 GB against 24 GB), so larger models fit on one GPU before you shard.

Power is 425 W against 300 W, and at FP32 the L40 does more work per watt. Weight the FP8 and FP16 rows for LLM work and the FP64 row for HPC.

New to the terms? The glossary explains FP64, FP32, TF32, BF16, FP16, FP8, INT8, Sparsity and TFLOPS. For how the generations relate, see NVIDIA architectures explained.

Frequently asked questions

Is the GeForce RTX 4090 D faster than the L40?

At FP8 precision the L40 reaches 362 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 should you choose, the GeForce RTX 4090 D or the L40?

Choose the L40 for training and high-throughput inference: it has 23% more FP8 throughput than the GeForce RTX 4090 D. It also carries 24 GB more memory, so larger models fit on one GPU before you shard. The L40 draws 125 W less power, which matters in an air-cooled or power-capped rack.

Which has more memory, the GeForce RTX 4090 D or the L40?

The L40 carries 48 GB of memory versus 24 GB for the GeForce RTX 4090 D.

How much power do the GeForce RTX 4090 D and the L40 draw?

The GeForce RTX 4090 D is rated at 425 W TDP and the L40 at 300 W. On FP32 throughput per watt, the L40 is the more efficient part.

How much do the GeForce RTX 4090 D and the L40 cost to rent?

Live cloud listings tracked by Flopper price no live listings yet for the GeForce RTX 4090 D, and the L40 from $0.46 per GPU-hour across 8 providers. The rental section on this page links to every provider, rate and the price history for each GPU.

Where to Rent

NVIDIA GeForce RTX 4090 D 24GB

No live rental listings tracked for the GeForce RTX 4090 D yet.

Browse GPU cloud providers

NVIDIA L40 48GB

Rent from

$0.46 / GPU-hr

Lowest of 16 live listings across 8 providers · median $0.88

See all L40 rental prices →

Price history and every provider on the pricing page. Some links are affiliate links.

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