Data Party THU

Sep 4, 2025 · Artificial Intelligence

How MXFP4 Quantization Lets a 1200‑Billion‑Parameter LLM Run on a Single 80GB GPU

This article analyzes the memory bottleneck of massive language models, explains the mathematical modeling of memory requirements, evaluates traditional sharding limits, and details how GPT‑OSS’s MXFP4 quantization combined with Mixture‑of‑Experts reduces memory, bandwidth, and compute demands enough to fit a 1200‑billion‑parameter model onto an 80 GB GPU with minimal accuracy loss.