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Can a M3 Pro 18GB run Gemma 4 E2B (effective 2.3B)?

Yes. Gemma 4 E2B (effective 2.3B) fits in fast memory on M3 Pro 18GB at Q8_0 (7.2 GB needed, 12.1 GB usable), about 20 tok/s (estimate).

Hardware: M3 Pro 18GB · Model: Gemma 4 E2B (effective 2.3B)

M3 Pro 18GB has 18 GB of unified memory and 150 GB/s of memory bandwidth. The checker leaves macOS a share of unified memory, so Ollama can use 12.1 GB. Gemma 4 E2B (effective 2.3B) (5.12B, Google) at Q8_0 is a 6 GB download and needs 7.2 GB with headroom for about 8k tokens.

Best quantQ8_0
Download size6 GB
Memory needed7.2 GB
Usable fast memory12.1 GB
Fitfits in fast memory
Estimated speed~20 tok/s (estimate)
Commandollama run gemma4:e2b-it-q8_0
Open M3 Pro 18GB 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