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Yes. Bonsai 2 2B (ternary) fits in fast memory on Mac Studio M3 Ultra (80c GPU) 256GB at Q2_0 (2 GB needed, 192.0 GB usable), about 720 tok/s (estimate).
Hardware: Mac Studio M3 Ultra (80c GPU) 256GB · Model: Bonsai 2 2B (ternary)
Mac Studio M3 Ultra (80c GPU) 256GB has 256 GB of unified memory and 819 GB/s of memory bandwidth. Mac Studio M3 Ultra (60c GPU) 256GB has the same memory and bandwidth, so the fit numbers match; this page is Mac Studio M3 Ultra (80c GPU) 256GB. The checker leaves macOS a share of unified memory, so Ollama can use 192.0 GB. Bonsai 2 2B (ternary) (2B, Prism ML) at Q2_0 is a 0.91 GB download and needs 2 GB with headroom for about 8k tokens.
| Best quant | Q2_0 |
|---|---|
| Download size | 0.91 GB |
| Memory needed | 2 GB |
| Usable fast memory | 192.0 GB |
| Fit | fits in fast memory |
| Estimated speed | ~720 tok/s (estimate) |
| Command | ollama run bonsai-2:2b |
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.
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