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Can a M1 Pro 32GB run Bonsai 2 27B (ternary)?

Yes. Bonsai 2 27B (ternary) fits in fast memory on M1 Pro 32GB at Q2_0 (10.6 GB needed, 24.0 GB usable), about 19 tok/s (estimate).

Hardware: M1 Pro 32GB · Model: Bonsai 2 27B (ternary)

M1 Pro 32GB has 32 GB of unified memory and 200 GB/s of memory bandwidth. M2 Pro 32GB has the same memory and bandwidth, so the fit numbers match; this page is M1 Pro 32GB. The checker leaves macOS a share of unified memory, so Ollama can use 24.0 GB. Bonsai 2 27B (ternary) (27B, Prism ML) at Q2_0 is a 8.3 GB download and needs 10.6 GB with headroom for about 8k tokens.

Best quantQ2_0
Download size8.3 GB
Memory needed10.6 GB
Usable fast memory24.0 GB
Fitfits in fast memory
Estimated speed~19 tok/s (estimate)
Commandollama run bonsai-2:27b
Open M1 Pro 32GB 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