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Yes. Gemma 4 31B fits in fast memory on M4 Pro 64GB at Q8_0 (36.5 GB needed, 48.0 GB usable), about 6 tok/s (estimate).
Hardware: M4 Pro 64GB · Model: Gemma 4 31B
M4 Pro 64GB has 64 GB of unified memory and 273 GB/s of memory bandwidth. The checker leaves macOS a share of unified memory, so Ollama can use 48.0 GB. Gemma 4 31B (31.3B, Google) at Q8_0 is a 34 GB download and needs 36.5 GB with headroom for about 8k tokens.
| Best quant | Q8_0 |
|---|---|
| Download size | 34 GB |
| Memory needed | 36.5 GB |
| Usable fast memory | 48.0 GB |
| Fit | fits in fast memory |
| Estimated speed | ~6 tok/s (estimate) |
| Command | ollama run gemma4:31b-it-q8_0 |
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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