Gemma 3 4B on Apple M3 Pro (18GB Unified)

M3 Pro (18GB Unified) runs Gemma 3 4B at Q4_K_M — 22 tok/s. Usable on 18 GB VRAM — see full quantization options below.

Model Size

4.3B

Device VRAM

18 GB

Bandwidth

150 GB/s

Quantization

Q4_K_M

Benchmarks

Performance by Quantization

OwnRig currently has one published compatibility entry for Gemma 3 4B on Apple M3 Pro (18GB 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	22 tok/s	320ms	✓ Yes	Acceptable	estimated

Notes

Q4_K_M

Compact model. Good for resource-constrained coding.

About Gemma 3 4B

Gemma 3 4B (4.3B) is a chat, coding model. Compact Gemma 3 model for chat and light coding on low-VRAM hardware.

View all Gemma 3 4B hardware options →

About Apple M3 Pro (18GB Unified)

Apple M3 Pro (18GB Unified) has 18 GB at 150 GB/s. Available in MacBook Pro 14", MacBook Pro 16".

See all models Apple M3 Pro (18GB 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.