Llama 3.3 70B Instruct on Apple M4 Ultra (192GB)

M4 Ultra (192GB) runs Llama 3.3 70B Instruct at Q4_K_M — 24 tok/s. Usable on 192 GB VRAM — see full quantization options below.

Model Size

70.6B

Device VRAM

192 GB

Bandwidth

819 GB/s

Quantization

Q4_K_M

Benchmarks

Performance by Quantization

OwnRig currently has one published compatibility entry for Llama 3.3 70B Instruct on Apple M4 Ultra (192GB) 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	24 tok/s	1133ms	✓ Yes	Acceptable	estimated

Notes

Q4_K_M

M4 Ultra: conservative estimate from measured M4 Max 128GB 70B results scaled by the 819/546 GB/s memory bandwidth advantage.

About Llama 3.3 70B Instruct

Llama 3.3 70B Instruct (70.6B) is a chat, coding, reasoning, multi-purpose model. Flagship Llama 3.3 model with best-in-class general and coding performance.

View all Llama 3.3 70B Instruct hardware options →

About Apple M4 Ultra (192GB)

Apple M4 Ultra (192GB) has 192 GB at 819 GB/s. Available in Mac Studio, Mac Pro.

See all models Apple M4 Ultra (192GB) can run →

Estimate method: Estimated from measured M4 Max 128GB 70B Q4_K_M results scaled by memory bandwidth ratio (819/546) with a conservative haircut. Reference hardware source: blog.imseankim.com (2026-04-11)

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.