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Can MacBook Pro M3 Max 128GB run Hy3?

Apple · 128 GB LPDDR5 · 400 GB/s bandwidth · Tencent · 295.0B (active 21.0B) · MoE · model ctx up to 256K

No — Hy3 at Q4 needs ≈ 165.35 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: ≈ 20.2 tok/s (estimated, batch 1). FP16 needs ≈ 595.2 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)
Q44K165.35 GBNo20.8 est.
Q48K default167.45 GBNo20.2 est.
Q432K180.05 GBNo17.5 est.
FP164K593.1 GBNo
FP168K default595.2 GBNo
FP1632K607.8 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
Q4162.25 GB4.2 GB1 GB167.45 GB128 GB
FP16590.0 GB4.2 GB1 GB595.2 GB128 GB

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