Can MacBook Pro M4 Max 128GB run DeepSeek-V4-Flash?
Apple · 128 GB LPDDR5X · 546 GB/s bandwidth ·
DeepSeek · 158.1B (active 13B) · MoE · model ctx up to 1000K
Yes — the MacBook Pro M4 Max 128GB (128 GB LPDDR5X) can run DeepSeek-V4-Flash. At Q4 with the default 8K context it needs ≈ 90.55 GB VRAM (weights 86.95 GB + KV cache 2.6 GB + 1 GB runtime overhead), which fits within 128 GB. Decode at Q4/8K: ≈ 26.7 tok/s (estimated, batch 1). FP16 needs ≈ 319.8 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
Quant
Context
VRAM needed
Fits?
tok/s (decode)
Q4
4K
89.25 GB
Yes
26.7est.
Q4
8K default
90.55 GB
Yes
26.7est.
Q4
32K
98.36 GB
Yes
26.7est.
FP16
4K
318.5 GB
No
3.4est.
FP16
8K default
319.8 GB
No
3.4est.
FP16
32K
327.6 GB
No
3.2est.
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).