AI chip · NVIDIA
NVIDIA L40S
Ada Lovelace data-center GPU (48 GB), targeted at mid-range training + inference + generative AI serving. Positioned between H100 and A10 in the Nvidia stack.
Market position
L40S is the PCIe workhorse for shops that wanted H100-adjacent performance without HGX complexity: 48 GB GDDR6 and 350 W into a two-slot passive card. CoreWeave, Lambda and enterprise VDI/generative workloads standardised on it as the mainstream Ada card.
DEPLOY editorial. What the vendor PDF cannot tell you.
Physical-AI cross-link
Derived from claims already on record (vendor first-party TDP, throughput, price, and the reference-design cluster registry). The arithmetic is shown per row so it can be audited. No estimated inputs.
- Perf per watt
- 2.09 FP8 TFLOPS/W733 TFLOPS ÷ 350 W = 2.09
What fits in 48 GB
Weights-only footprint for public open-weight LLMs. Pure arithmetic: params × bytes/param. Excludes KV cache and activation memory; add ~10-30% headroom for real serving. A model that does not fit at FP16 may still fit at INT8 or INT4 with quality trade-offs. Not a benchmark.
| Model | Params | FP16 | INT8 | INT4 |
|---|---|---|---|---|
| Llama 3.1 8B dense | 8 B | 16 GB ✓ | 8 GB ✓ | 4 GB ✓ |
| Llama 3.1 70B dense | 70 B | 140 GB ✗ | 70 GB ✗ | 35 GB ✓ |
| Llama 3.1 405B dense | 405 B | 810 GB ✗ | 405 GB ✗ | 203 GB ✗ |
| Llama 3.3 70B dense | 70 B | 140 GB ✗ | 70 GB ✗ | 35 GB ✓ |
| DeepSeek V3 MoE (671B total, 37B active per token) | 671 B | 1342 GB ✗ | 671 GB ✗ | 336 GB ✗ |
| DeepSeek R1 MoE (671B total, 37B active per token) | 671 B | 1342 GB ✗ | 671 GB ✗ | 336 GB ✗ |
| Qwen 2.5 7B dense | 7 B | 14 GB ✓ | 7 GB ✓ | 4 GB ✓ |
| Qwen 2.5 72B dense | 72 B | 144 GB ✗ | 72 GB ✗ | 36 GB ✓ |
| Mixtral 8x7B MoE (46.7B total, 12.9B active per token) | 46.7 B | 93 GB ✗ | 47 GB ✓ | 23 GB ✓ |
| Mixtral 8x22B MoE (141B total, 39B active per token) | 141 B | 282 GB ✗ | 141 GB ✗ | 71 GB ✗ |
| Gemma 2 27B dense | 27 B | 54 GB ✗ | 27 GB ✓ | 14 GB ✓ |
| Command R+ dense | 104 B | 208 GB ✗ | 104 GB ✗ | 52 GB ✗ |
| Kimi K2 MoE (1T total, 32B active per token) | 1000 B | 2000 GB ✗ | 1000 GB ✗ | 500 GB ✗ |
Math: FP16 = params × 2 bytes; INT8 = params × 1 byte; INT4 = params × 0.5 bytes. MoE models sum every expert (full weights on disk), not the per-token active subset.
Common questions
Answer-first, sourced. Every claim below traces to a specific field on this page or a cited datasheet. FAQPage schema is emitted so LLM crawlers can lift these verbatim.
How much does NVIDIA L40S cost?
NVIDIA L40S launch pricing is not on record in the DEPLOY registry. Vendor list prices are typically published in the vendor's own briefing rather than the datasheet.
How much memory does NVIDIA L40S have?
48 GB of GDDR6 at 864 GB/s. Vendor datasheet, first-party.
How much power does one NVIDIA L40S draw?
350 W TDP (thermal design power) per chip. System-level draw is higher: see the reference-design section for rack-level kW.
Which open-weight LLMs fit on one NVIDIA L40S?
Of the 13 public open-weight LLMs DEPLOY tracks: 2 fit at FP16, 4 at INT8, 7 at INT4 (weights only, excludes KV cache). The full table is above with per-model math. Sparsity, offloading and multi-GPU serving change the picture; this row is single-chip weights-only.
Key facts
- Class
- Compute SoC (AI accelerator)
- Designer
- NVIDIA
- Safety-critical?
- No (data-center inference / training)
- Record as of
- 2026-08-25
Specifications (15 fields, click to expand)
Vendor datasheet figures (first-party). Dense throughput first; sparse (2:4) in parentheses where NVIDIA quotes it. The exhaustive spec sheet lives on the datasheet URL below the table: this row set covers what buyers actually compare on.
- Process node
- TSMC 4N
- Transistors
- 76.3 B
- CUDA cores
- 18,176
- Tensor cores
- 568 (4th gen (Ada Lovelace))
- RT cores
- 142 (3rd gen)
- TDP
- 350 W
- Memory
- 48 GB GDDR6
- Memory bandwidth
- 864 GB/s
- PCIe
- Gen 4 x16 (64 GB/s)
- FP32
- 91.6 TFLOPS
- FP16 (dense)
- 362 TFLOPS (733 sparse)
- FP8 (dense)
- 733 TFLOPS (1,466 sparse)
- INT8 (dense)
- 733 TOPS (1,466 sparse)
- Form factor
- PCIe
- Announced
- 2023-08-08
Source: vendor datasheet
Generation
Compare with
Sources
- NVIDIA L40SNvidia
Adoption rows appear as we verify chip-integration claims per model. Every row is a public claim the maker or a tier-1 source has stated; verification tier (verified / reported / inferred) is shown per row. See every chip on record for the full catalog or the NVIDIA record.