L40S vs RTX 3080: Specs, VRAM & Price
Short answer: choose the L40S when 48 GB of VRAM is the gating requirement. Choose the RTX 3080 when 12 GB is enough for the workload and the lower hourly rate points that way.
The L40S has 48 GB of VRAM; the RTX 3080 has 12 GB.
You can rent both by the hour, no purchase required. L40S from $0.698/GPU/hr; RTX 3080 from $0.187/GPU/hr. The RTX 3080 is 73% cheaper at the entry rate.
L40S
Good for fine-tuning mid-size models and high-throughput inference
RTX 3080
Good for inference and small-scale training workloads
Last updated: 2026-10-10 17:50:04 UTCRefreshes hourly
Specs side by side
| Spec | L40S | RTX 3080 |
|---|---|---|
| VRAM | 48 GB | 12 GB |
| Memory bandwidth | 864 GB/s | 760 GB/s |
| Architecture | Ada Lovelace | Ampere |
| Compute capability | 8.9 | 8.6 |
| Precisions in hardware | FP32, FP16, BF16, FP8, INT4 | FP32, FP16, BF16, INT4 |
| Peak FP16/BF16 tensor TFLOPS | 362 TFLOPS | 119 TFLOPS |
| Peak FP8 tensor TFLOPS | 733 TFLOPS | – |
| Max board power (TDP) | 350W | 320W |
| Form factor | PCIe | – |
| Regions | 5 | 1 |
On-demand price
| Rate | L40S | RTX 3080 |
|---|---|---|
| Lowest per GPU/hr | $1.07/GPU/hr | $0.187/GPU/hr (cheapest overall) |
Which is better for AI: L40S or RTX 3080?
Choose the L40S when 48 GB of VRAM is the gating requirement. Choose the RTX 3080 when 12 GB is enough for the workload and the lower hourly rate points that way.
L40S vs RTX 3080: common questions
Is the L40S or the RTX 3080 better for AI?
Short answer: choose the L40S when 48 GB of VRAM is the gating requirement. Choose the RTX 3080 when 12 GB is enough for the workload and the lower hourly rate points that way.
Is the L40S or the RTX 3080 cheaper to rent?
On Aquanode's live marketplace the L40S starts at $0.698/GPU/hr (median $1.20/GPU/hr) and the RTX 3080 starts at $0.187/GPU/hr (median $0.198/GPU/hr). The RTX 3080 is the cheaper of the two at the entry rate, by 73%.
What is the difference between the L40S and the RTX 3080?
The L40S has 48 GB of VRAM against the RTX 3080's 12 GB; the L40S is an Ada Lovelace part and the RTX 3080 is Ampere (compute capability 8.9 vs 8.6); only the L40S supports FP8 compute. On price, the L40S lists from $0.698/GPU/hr and the RTX 3080 from $0.187/GPU/hr.
How widely available are the L40S and the RTX 3080?
The L40S is listed in 5 regions and the RTX 3080 in 1 region right now.
How much does 1,000 GPU-hours cost on the L40S vs the RTX 3080?
At the lowest rates listed today, 1,000 GPU-hours costs $698 on the L40S and $187 on the RTX 3080, a difference of $511 for the same runtime. Rates are per GPU per hour and update hourly.
How much VRAM does the L40S have compared to the RTX 3080?
The L40S has 48 GB of VRAM; the RTX 3080 has 12 GB.
Does the L40S or the RTX 3080 support NVLink?
Neither the L40S nor the RTX 3080 has a dedicated GPU-to-GPU interconnect.
How this comparison is calculated
Every price is normalized to a per-GPU hourly rate using the same pipeline as every other pricing surface on Aquanode, and only the cheapest qualifying offer per provider is shown. A dash means that provider does not currently list that GPU.
Architecture, compute capability and supported precisions come from each vendor's published datasheet for that generation, not from the marketplace feed. This page regenerates at most once per hour.
Memory bandwidth, tensor TFLOPS, NVLink/interconnect and max board power are the same verified-from-datasheet figures shown on each model's own L40S page and RTX 3080 page, which link the primary vendor source for that model. A dash here means Aquanode hasn't verified that figure from a primary source yet, never a guess.
Go further
Check what fits in each card's memory with the L40S VRAM calculator and the RTX 3080 VRAM calculator, see vendor-published throughput in the GPU benchmarks and specs table, or browse every model by generation in the GPU index.
More L40S comparisons
More RTX 3080 comparisons
Related reading: L40S pricing and specs, and The best GPUs for AI, ranked.
