Local LLMs on a 96GB M3 Ultra: Qwen3.8-27B Q8_0 Wins for Coding, With Full Config Shared

FanDiscombobulated38 · reddit · 2026-10-20

A Reddit user shares his local setup on a 96GB M3 Ultra Mac Studio: llama.cpp with Metal via llama-swap. Coding runs Qwen3.8-27B (Unsloth Q80) with MTP speculative decoding and 262K context; chat runs Qwen3-Coder-Next (UD-Q6KXL) at 131K context, both with Q80 KV cache. He finds Coder-Next underwhelming for coding and asks fellow owners for exact model/quant/perf numbers on similar hardware.

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