Aug 18, 2026 · 5 min read One Config Line Made My 27B Model 2.7× Faster Deploying Qwen3.8-27B on a DGX Spark shows why dense-model decode is bandwidth-bound, and how MTP speculative decoding lifts throughput from 11 to 29 tok/s. LLM Engineering Qwen llama.cpp Inference Efficiency
