Gemma 3 27B on Apple M4 Pro (24GB Unified)

M4 Pro (24GB Unified) runs Gemma 3 27B at Q4_K_M — 8 tok/s. Usable on 24 GB VRAM — see full quantization options below.

Model Size

27.23B

Device VRAM

24 GB

Bandwidth

273 GB/s

Quantization

Q4_K_M

Benchmarks

Performance by Quantization

OwnRig currently has one published compatibility entry for Gemma 3 27B on Apple M4 Pro (24GB Unified) at Q4_K_M. This is the best supported pairing we can stand behind today.

Quantization	Speed	TTFT	Fits in VRAM	Rating	Confidence
Q4_K_M	8 tok/s	1200ms	✓ Yes	Acceptable	estimated

Notes

Q4_K_M

Q4_K_M fits with 7.7GB headroom. Low bandwidth (273 GB/s) is the bottleneck.

About Gemma 3 27B

Gemma 3 27B (27.23B) is a chat, coding, reasoning, multi-purpose model. Google's largest open-weight model before Gemma 4. Capable reasoning and instruction following. At 27B parameters, it sits between 8B models (too limited) and 70B models (too expensive). Wide multilingual support. Fits on 24 GB GPUs at Q4.

View all Gemma 3 27B hardware options →

About Apple M4 Pro (24GB Unified)

Apple M4 Pro (24GB Unified) has 24 GB at 273 GB/s. Available in MacBook Pro 14", MacBook Pro 16", Mac Mini.

See all models Apple M4 Pro (24GB Unified) can run →

Estimate method: MLX performance estimates. Reference hardware source: github.com (2026-03-15)

Performance varies by driver version, inference engine, quantization method, context length, and system configuration. Figures shown are estimates based on community benchmarks and may not reflect your exact setup. Product names are trademarks of their respective owners. OwnRig is independent and not affiliated with any hardware or AI model provider.