Can I run this LLM?
Can a Mac Studio M5 Ultra (256GB) run Gemma 4 31B?
Gemma · Apache 2.0 · estimated for a 256.0 GB machine at 4K context.
Yes — it runs great.
Best fit: Gemma 4 31B at FP16 · 61.4 GB · 12–18 tok/s on a Mac Studio M5 Ultra (256GB).
Every quantization on this machine
| Quant | Size | Speed | Fit |
|---|---|---|---|
| Q2_K | 11.8 GB | 47–70 tok/s | Runs great |
| Q3_K_M | 14.7 GB | 40–60 tok/s | Runs great |
| Q4_K_M | 18.3 GB | 34–51 tok/s | Runs great |
| Q5_K_M | 21.7 GB | 30–45 tok/s | Runs great |
| Q6_K | 25.2 GB | 27–40 tok/s | Runs great |
| Q8_0 | 32.6 GB | 21–32 tok/s | Runs great |
| FP16 | 61.4 GB | 12–18 tok/s | Runs great |
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