How Much VRAM to Fine-Tune an LLM? 12 to 120 GB
Fine-tuning a 7B-parameter LLM requires 12 to 120 GB of VRAM depending on the method, according to a practical guide. Full fine-tuning in fp16 needs 80–120 GB, LoRA needs 24–32 GB, QLoRA needs 12–16 GB, and gradient chec…