Can MacBook Pro M4 Max 128GB run Qwen3.5-27B?

Apple · 128 GB LPDDR5X · 546 GB/s bandwidth · Alibaba · 27.0B · model ctx up to 256K

Yes — the MacBook Pro M4 Max 128GB (128 GB LPDDR5X) can run Qwen3.5-27B. At Q4 with the default 8K context it needs ≈ 21.25 GB VRAM (weights 14.85 GB + KV cache 5.4 GB + 1 GB runtime overhead), which fits within 128 GB. Decode at Q4/8K: ≈ 12.9 tok/s (estimated, batch 1). FP16 (≈ 60.4 GB) also fits, at ≈ 3.5 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	18.55 GB	Yes	12.9 est.
Q4	8K default	21.25 GB	Yes	12.9 est.
Q4	32K	37.45 GB	Yes	12.9 est.
FP16	4K	57.7 GB	Yes	3.5 est.
FP16	8K default	60.4 GB	Yes	3.5 est.
FP16	32K	76.6 GB	Yes	3.5 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	14.85 GB	5.4 GB	1 GB	21.25 GB	128 GB
FP16	54.0 GB	5.4 GB	1 GB	60.4 GB	128 GB

Other GPUs that run Qwen3.5-27B

• B200 192GB SXM — ≈188.6 tok/s Q4 est.
• MI300X 192GB — ≈124.9 tok/s Q4 est.
• H200 141GB SXM5 — ≈113.1 tok/s Q4 est.
• H100 80GB SXM5 — ≈79.0 tok/s Q4 est.
• Gaudi 3 128GB — ≈77.2 tok/s Q4 est.
• A100 80GB SXM4 — ≈48.1 tok/s Q4 est.
• RTX 5090 32GB — ≈42.2 tok/s Q4 est.
• RTX 4090 24GB — ≈23.8 tok/s Q4 est.

All GPUs for Qwen3.5-27B →

Other models for the MacBook Pro M4 Max 128GB

• MiniCPM5-1B — ≈321.7 tok/s Q4 est.
• Qwen3.5-2B — ≈173.7 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.
• Qwen3-Next-80B-A3B-Instruct — ≈115.8 tok/s Q4 est.
• Qwen3-Coder-Next — ≈115.8 tok/s Q4 est.
• Qwen3.5-35B-A3B — ≈115.8 tok/s Q4 est.
• Qwen3.6-35B-A3B — ≈115.8 tok/s Q4 est.

All models on the MacBook Pro M4 Max 128GB →