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Can a M2 Ultra 128GB run Qwen3 30B-A3B (MoE)?

Yes. Qwen3 30B-A3B (MoE) fits in fast memory on M2 Ultra 128GB at Q8_0 (34.4 GB needed, 96.0 GB usable), about 90 tok/s (estimate).

Hardware: M2 Ultra 128GB · Model: Qwen3 30B-A3B (MoE)

M2 Ultra 128GB has 128 GB of unified memory and 800 GB/s of memory bandwidth. The checker leaves macOS a share of unified memory, so Ollama can use 96.0 GB. Qwen3 30B-A3B (MoE) (30.5B, 3.3B active, Alibaba) at Q8_0 is a 33 GB download and needs 34.4 GB with headroom for about 8k tokens.

Best quantQ8_0
Download size33 GB
Memory needed34.4 GB
Usable fast memory96.0 GB
Fitfits in fast memory
Estimated speed~90 tok/s (estimate)
Commandollama run qwen3:30b-a3b-q8_0
Open M2 Ultra 128GB in the checker

Estimates, not benchmarks. Model sizes are ollama.com download sizes; memory needed adds headroom for ~8k tokens of context; speeds are rough figures from memory bandwidth. Data updated 2026-10-23.

A project by OnDevice Labs · llms.txt