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Can a M2 Ultra 192GB run Qwen3 235B-A22B (MoE)?

Yes, if the Mac GPU limit is raised. Qwen3 235B-A22B (MoE) on M2 Ultra 192GB at Q4_K_M needs sudo sysctl iogpu.wired_limit_mb=149812 (144.3 GB needed, 144.0 GB usable), about 24 tok/s (estimate).

Hardware: M2 Ultra 192GB · Model: Qwen3 235B-A22B (MoE)

M2 Ultra 192GB has 192 GB of unified memory and 800 GB/s of memory bandwidth. The checker leaves macOS a share of unified memory, so Ollama can use 144.0 GB. Qwen3 235B-A22B (MoE) (235B, 22B active, Alibaba) at Q4_K_M is a 142 GB download and needs 144.3 GB with headroom for about 8k tokens.

Best quantQ4_K_M
Download size142 GB
Memory needed144.3 GB
Usable fast memory144.0 GB
Fitfits if the Mac GPU limit is raised
Estimated speed~24 tok/s (estimate)
Mac GPU limitsudo sysctl iogpu.wired_limit_mb=149812
Commandollama run qwen3:235b
Open M2 Ultra 192GB 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