Can MacBook Pro M4 Max 128GB run Llama-3.1-8B-Instruct?

Apple · 128 GB LPDDR5X · 546 GB/s bandwidth · Meta · 8.0B · model ctx up to 128K

Yes — the MacBook Pro M4 Max 128GB (128 GB LPDDR5X) can run Llama-3.1-8B-Instruct. At Q4 with the default 8K context it needs ≈ 7.0 GB VRAM (weights 4.4 GB + KV cache 1.6 GB + 1 GB runtime overhead), which fits within 128 GB. Decode at Q4/8K: ≈ 43.4 tok/s (estimated, batch 1). FP16 (≈ 18.6 GB) also fits, at ≈ 11.9 tok/s (estimated). Estimates come from memory-bandwidth math; rows tagged measured override estimates. Relative ranking is more reliable than absolute tok/s. Methodology.

Fit & speed by quant and context

Quant	Context	VRAM needed	Fits?	tok/s (decode)
Q4	4K	6.2 GB	Yes	43.4 est.
Q4	8K default	7.0 GB	Yes	43.4 est.
Q4	32K	11.8 GB	Yes	43.4 est.
FP16	4K	17.8 GB	Yes	11.9 est.
FP16	8K default	18.6 GB	Yes	11.9 est.
FP16	32K	23.4 GB	Yes	11.9 est.

Fits = weights + KV(ctx) + 1 GB overhead ≤ 95% of VRAM. Measured anchors are context-agnostic; the fit verdict is recomputed per context. A missing tok/s means the model is far beyond this card (offload-only territory).

VRAM breakdown at 8K context

Quant	Weights	KV cache	Overhead	Total needed	MacBook Pro M4 Max 128GB VRAM
Q4	4.4 GB	1.6 GB	1 GB	7.0 GB	128 GB
FP16	16.0 GB	1.6 GB	1 GB	18.6 GB	128 GB

Other GPUs that run Llama-3.1-8B-Instruct

• B200 192GB SXM — ≈636.4 tok/s Q4 est.
• MI300X 192GB — ≈421.6 tok/s Q4 est.
• H200 141GB SXM5 — ≈381.8 tok/s Q4 est.
• H100 80GB SXM5 — ≈266.5 tok/s Q4 est.
• Gaudi 3 128GB — ≈260.6 tok/s Q4 est.
• RTX 5090 32GB — ≈214.3 tok/s Q4 measured
• A100 80GB SXM4 — ≈162.2 tok/s Q4 est.
• RTX 6000 Ada 48GB — ≈138.6 tok/s Q4 measured

All GPUs for Llama-3.1-8B-Instruct →

Other models for the MacBook Pro M4 Max 128GB

• Qwen3-0.6B — ≈434.3 tok/s Q4 est.
• gemma-3-1b-it — ≈347.5 tok/s Q4 est.
• Llama-3.2-1B-Instruct — ≈289.5 tok/s Q4 est.
• Qwen3-1.7B — ≈173.7 tok/s Q4 est.
• Qwen3-30B-A3B — ≈115.8 tok/s Q4 est.
• Qwen3-Coder-30B-A3B-Instruct — ≈115.8 tok/s Q4 est.
• GLM-4.7-Flash — ≈115.8 tok/s Q4 est.
• Qwen3-30B-A3B-Instruct-2507 — ≈115.8 tok/s Q4 est.

All models on the MacBook Pro M4 Max 128GB →