GPU Selection Guide — Choosing the Right GPU

Why it matters

GPU selection has huge cost impact. Understanding shapes right buying.

The architecture

Training: H100, H200, B200 for large. A100 still viable.

Inference: L40S, L4, A10G.

How it works end to end

Consumer RTX 4090: 24GB, cheap, great for dev + local inference. Limited by NVLink absence.

Data center GPUs: warranty, higher perf per watt, MIG, etc.

Cloud vs own: rent for spiky, buy for sustained.