Gemma 4 12B is a 11.96B-parameter model. At Q4_K_M it needs about 7.9 GB of memory. The MacBook M4 Pro 24GB has 18 GB usable, so it fits entirely in memory. Expect about 20 tokens/sec (12–29), with the first token after 0.5 s for a short prompt. This estimate is interpolated from benchmarks of similar setups.
| Quantization | File size | Memory | Generation | First token | Source |
|---|---|---|---|---|---|
| Q4_K_M | 7.1 GB | Fits | 20 tok/s | 0.5 s | Derived |
| Q8_0 | 12.7 GB | Fits | 12 tok/s | 0.5 s | Derived |
| FP16 | 23.8 GB | Doesn't fit | Won't run | — | — |
All models on the MacBook M4 Pro 24GB · Gemma 4 12B on all hardware
Estimates for a short prompt on a single device. Measured numbers come from community benchmarks (r/LocalLLaMA, localscore.ai and more); others are derived from similar setups or projected from specs. Open source on GitHub.