Can I Run DeepSeek V3 on Apple M2 Ultra?
Written by Jakub Rusinowski · Last updated July 12, 2026
No — DeepSeek V3 (685B MoE) at Q4_K_M needs 414.9 GB at 8K context (413.6 GB weights + 1.3 GB KV cache/overhead), and the Apple M2 Ultra's 144 GB usable memory leaves it ~270.9 GB short.
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Apple M2 Ultra Specs
| VRAM | 192 GB unified memory |
| Memory Bandwidth | 800 GB/s |
DeepSeek V3 (685B MoE) on the Apple M2 Ultra: VRAM by quantization
| Quant | VRAM needed | Fits 192 GB? | Max context | Whole PC |
|---|---|---|---|---|
| F16 | 1371.4 GB | ✗ No | — | — |
| Q8_0 | 729.2 GB | ✗ No | — | — |
| Q6_K | 563.1 GB | ✗ No | — | — |
| Q5_K_M | 486.9 GB | ✗ No | — | — |
| Q4_K_M | 414.9 GB | ✗ No | — | — |
| Q3_K_M | 293.4 GB | ✗ No | — | — |
| Q2_K | 226.6 GB | ✗ No | — | — |
Assumes an 8K-token context with an f16 KV cache. A longer window needs more; a quantized KV cache needs less. “Max context” is the largest window that still fits in 192 GB of unified memory. Figures are estimates from parameter count, quantization and memory bandwidth — the analyzer lets you tune KV-cache quant and context.
Context costs VRAM too. At Q4_K_M on the Apple M2 Ultra: 8K 414.9 GB ✗ · 32K 416.7 GB ✗ · 125K 423.4 GB ✗. Past 8K it no longer fits 192 GB — a q8_0 KV cache buys roughly half of that back, which the calculator will price for you.
Why It Does Not Fit
Every DeepSeek V3 variant requires more VRAM than the Apple M2 Ultra provides (192 GB).
DeepSeek V3 needs ~415 GB but this GPU has 192 GB. Rent a 8× H100 (640 GB)-class GPU by the hour instead of buying one:
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Cloud rates verified 2026-07 — estimates, and marketplace prices vary. Buying price is GPU MSRP only, not a full PC.
FAQ
Is the Apple M2 Ultra enough to run DeepSeek V3 locally?
No — DeepSeek V3 (685B MoE) at Q4_K_M needs 414.9 GB at 8K context (413.6 GB weights + 1.3 GB KV cache/overhead), and the Apple M2 Ultra's 144 GB usable memory leaves it ~270.9 GB short.
Popular Models on the Apple M2 Ultra
VRAM Tier
Troubleshooting
- Ollama: "model requires more system memory than is available"
- Which GGUF quant should I download? (Q4 vs Q5 vs Q8)
Buying Guide
← Can I Run It? | DeepSeek V3 Model Page | Apple M2 Ultra GPU Page | VRAM calculator | Check Your Hardware