Local AI Wizard
CONFIGURATION / CAPACITY

Mac Studio M5 Ultra · 256 GB unified

A 256 GB unified-memory configuration, not the maximum available configuration. Reserve memory for the OS, KV cache and multimodal components; verify a Metal/MLX path. manufacturer specification ↗.

Text models within the planning estimate

These are capacity candidates under a generic Q4 formula, not measured executions. The total estimate does not separately prove KV cache, vision encoder, runtime support or multi-GPU placement.

ModelQ4 planningQualityCheckpoint
Qwen3.5 9B~15 GB—source ↗
Qwen3.8 27B~29 GB75.3 · LiveBench 2026-06-25source ↗
Qwen3.5 35B A3B~35 GB—source ↗
GLM-5.3 Flash~248 GB71.6 · LiveBench 2026-06-25source ↗

Documented media paths

These are publisher-documented CUDA memory paths; exact GPU architecture, ARM64, precision, offload, resolution and runtime may differ from this machine.

No matching documented path in this reviewed subset. This is not proof of incompatibility.

Specification reviewed: 2026-09-24. No price or stock claim is made here.