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Can MacBook Pro M3 Max 128GB run Qwen3.5-397B-A17B?

Apple · 128 GB LPDDR5 · 400 GB/s bandwidth · Alibaba · 397.0B (active 17.0B) · MoE · model ctx up to 256K

No — Qwen3.5-397B-A17B at Q4 needs ≈ 221.05 GB even at 4K context, beyond the MacBook Pro M3 Max 128GB's 128 GB LPDDR5. It would only run with heavy CPU/disk offload. Decode at Q4/8K: ≈ 14.1 tok/s (estimated, batch 1). FP16 needs ≈ 798.4 GB — does not fit on this card. 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

QuantContextVRAM neededFits?tok/s (decode)
Q44K221.05 GBNo14.3 est.
Q48K default222.75 GBNo14.1 est.
Q432K232.95 GBNo12.9 est.
FP164K796.7 GBNo
FP168K default798.4 GBNo
FP1632K808.6 GBNo

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

QuantWeightsKV cacheOverheadTotal neededMacBook Pro M3 Max 128GB VRAM
Q4218.35 GB3.4 GB1 GB222.75 GB128 GB
FP16794.0 GB3.4 GB1 GB798.4 GB128 GB

Other GPUs that run Qwen3.5-397B-A17B

No catalog GPU fully fits Qwen3.5-397B-A17B at Q4/8K — see the model page for offload estimates.

All GPUs for Qwen3.5-397B-A17B →

Other models for the MacBook Pro M3 Max 128GB

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