L20
nvidia · ada · 48 GB GDDR6 · 275W TDP
VRAM
48 GB
BF16 TFLOPS
239
Bandwidth
864 GB/s
From
$0.80/hr
Spec Sheet
Pricing by Provider
| Provider | On-Demand | Reserved | Spot | Badge |
|---|---|---|---|---|
| vast_ai | $1.10/hr | - | $0.80/hr | Cheapest |
Compatible Models (267)
Single GPU (198 models)
Multi-GPU (69 models)
Training Capabilities
Estimated GPU count for full fine-tuning (AdamW, BF16) and QLoRA
| Model Size | Full Fine-Tune | QLoRA |
|---|---|---|
| 7B model | 3 GPUs | 1 GPU |
| 13B model | 6 GPUs | 1 GPU |
| 70B model | 28 GPUs | 1 GPU |
Energy Efficiency
Estimated tokens/second per Watt for popular models
Similar GPUs
| GPU | VRAM | BF16 TFLOPS | BW (GB/s) | From |
|---|---|---|---|---|
| L40S | 48 GB | 362 | 864 | $0.85/hr |
| L40 | 48 GB | 362 | 864 | $0.75/hr |
| RTX 6000 Ada | 48 GB | 91.1 | 960 | $0.59/hr |
| L4 | 24 GB | 121 | 300 | $0.29/hr |
| RTX 4090 | 24 GB | 165 | 1008 | $0.39/hr |
Methodology Note
Performance estimates for the L20are based on InferenceBench's roofline performance model with CUDA kernel-level optimization including FlashAttention v2 and PagedAttention. Memory calculations account for model weights (48 GB GDDR6 available), KV-cache allocation, and activation memory. Throughput predictions use the L20's rated 864 GB/s memory bandwidth and 239 BF16 TFLOPS compute capacity as roofline ceilings, with empirical correction factors per GPU architecture (ada). See our full methodology.
Frequently Asked Questions
How many AI models can run on L20?
The L20 can run 267 AI models from our database within a single node. Compatible models range across various parameter sizes depending on the quantization precision (BF16, FP8, INT4). Smaller models fit on a single GPU while larger models may require multi-GPU setups up to 8x L20.
What is the L20 inference throughput?
The L20 delivers 239 BF16 TFLOPS and 478 FP8 TFLOPS with 864 GB/s memory bandwidth. Actual inference throughput (tokens/sec) depends on the model size, precision, and batch size. Use our calculator for model-specific throughput estimates.
How much does L20 cost per hour?
The L20 is available starting from $0.80/hour via vast_ai. Prices vary by provider and pricing tier (on-demand, reserved, spot). Compare pricing across all providers in the table above.