Use-case guide · RAG chatbot

Should you pick H100 PCIe for rag chatbot?

H100 PCIe has 80 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

H100 PCIe fits models up to ~56B 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 H100 PCIe is on the GPU detail page — click through for the sortable list.

Throughput

On rag chatbot workloads, H100 PCIe 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.