Use-case guide · RAG chatbot

Should you pick L40 for rag chatbot?

L40 has 48 GB VRAM. Whether it's the right fit for rag chatbot depends on your model size, expected QPS, and budget. Below is what we're seeing in production.

VRAM + model fit

L40 fits models up to ~34B parameters in BF16 comfortably with room for KV-cache. For rag chatbot specifically, you'll want to leave headroom for context length growth.

Pricing

Live pricing across all providers for L40 is on the GPU detail page — click through for the sortable list.

Throughput

On rag chatbot workloads, L40 typically delivers the throughput published in its FP16 spec, minus the framework overhead (vLLM ≈ 85% MFU, TGI ≈ 70%).

Try the calculator to size the hardware for your specific model, or see all GPUs on the InferenceScore leaderboard.