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Can a M2 Ultra 128GB run Ornith-1.5 9B?

Yes. Ornith-1.5 9B fits in fast memory on M2 Ultra 128GB at Default (8 GB needed, 96.0 GB usable), about 97 tok/s (estimate).

Hardware: M2 Ultra 128GB · Model: Ornith-1.5 9B

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. Ornith-1.5 9B (9B, Ornith) at Default is a 6.6 GB download and needs 8 GB with headroom for about 8k tokens.

Best quantDefault
Download size6.6 GB
Memory needed8 GB
Usable fast memory96.0 GB
Fitfits in fast memory
Estimated speed~97 tok/s (estimate)
Commandollama run ornith-1.5:9b
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