作者： Jakub Rusinowski · 最后更新： 2026年8月15日
Not at Q4_K_M — that needs 413.6 GB and the Apple M3 Ultra has 512 GB. Drop to Q3_K_M and it fits in 293.4 GB, with up to 128K of context.
| Model | DeepSeek V3.2 685B |
| Parameters | 685B |
| Quantization | Q4_K_M |
| VRAM needed | 413.6 GB |
| Apple M3 Ultra VRAM | 512 GB |
| Verdict | Runs at a lower quant |
| Fits at | Q3_K_M (293.4 GB) |
| Max context | 128K |
Quantize to Q3_K_M. That is the cheapest fix — it costs some quality but no money.
Running DeepSeek V3.2 685B on this card:
DeepSeek V3.2 685B needs ~414 GB but this GPU has 512 GB. Rent a 8× H100 (640 GB)-class GPU by the hour instead of buying one:
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All DeepSeek V3.2 sizes on the Apple M3 Ultra | VRAM calculator for DeepSeek V3.2 685B | Apple M3 Ultra GPU page | Check your hardware