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Can the Apple M4 Pro (24GB) run Gemma 4 31B?

Apple M4 Pro (24GB) × Gemma 4 31B8K context
Yes, with heavy quantizationFits only at a low-quality quant
Memory at Q2_K13.5 GB of 16.1 GB
Weights 11.7 GBKV cache 1.2 GBRuntime 0.6 GB
QuantQ2_KHeavily degraded
Speed~14tokens per second
Max context68Ktokens that fit at Q2_K
  1. FP16
  2. Q8_0
  3. Q6_K
  4. Q5_K_M
  5. Q4_K_M
  6. Q3_K_M
  7. Q2_K

Only just. Gemma 4 31B fits on the Apple M4 Pro (24GB) at Q2_K, which costs noticeable quality. Expect about 14 tokens/second. A card with more memory is a better experience.

Try other context lengths

Run it with Ollama

Ollama's default gemma4:31b download is Q4_K_M, which needs about 20.8 GB, more than the 16.1 GB available. Download the Q2_K GGUF instead (LM Studio lists quants per model), or try a smaller context length.

New to this? Step-by-step setup for the Apple M4 Pro (24GB)

Run it in the cloud

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Memory needed by quantization

At 8,192 tokens of context. The black line marks the 16.1 GB the Apple M4 Pro (24GB) can use. macOS lets the GPU use about 16.1 GB of the 24 GB unified memory by default.

QuantQualityMemoryFits?Speed
FP16Full quality64.4 GBToo big—
Q8_0Near-lossless35 GBToo big—
Q6_KExcellent27.4 GBToo big—
Q5_K_MVery good24 GBToo big—
Q4_K_MGood, most popular20.8 GBToo big—
Q3_K_MNoticeably degraded17.1 GBToo big—
Q2_KHeavily degraded13.5 GBFits~14 tok/s

Measured speed from real Apple M4 Pro (24GB) owners

Tokens per second that people measured on their own Apple M4 Pro (24GB), next to our estimate.

No one has measured Gemma 4 31B on the Apple M4 Pro (24GB) yet. The speeds above are estimates. Run the benchmark and yours becomes the first real number on this page.

Have an Apple M4 Pro (24GB)? Add your real speed

One command times Gemma 4 31B in your own Ollama, shows you exactly what it would send, and asks before sending anything. No sign-up, no personal data.

macOS and Linux

curl -fsSL https://gpufit.dev/bench.sh | sh -s -- gemma4:31b

Windows (PowerShell)

$env:GPUFIT_MODEL="gemma4:31b"; irm https://gpufit.dev/bench.ps1 | iex

How the benchmark works

GPUs that run Gemma 4 31B comfortably

Check RTX 3090 prices

Models that run well on the Apple M4 Pro (24GB)

Frequently asked questions

Can Apple M4 Pro (24GB) run Gemma 4 31B?

Only just. Gemma 4 31B fits on the Apple M4 Pro (24GB) at Q2_K, which costs noticeable quality. Expect about 14 tokens/second. A card with more memory is a better experience.

How much VRAM does Gemma 4 31B need?

About 20.8 GB at Q4_K_M with 8,192 tokens of context, and about 64.4 GB at full FP16 precision.

How fast is Gemma 4 31B on the Apple M4 Pro (24GB)?

Roughly 14 tokens per second at Q2_K, estimated from the Apple M4 Pro (24GB)'s 273 GB/s memory bandwidth.