Can I Run DeepSeek V4-Flash on Apple M2 Ultra?
Autor: Jakub Rusinowski · Ostatnia aktualizacja: 12 lipca 2026
Not at Q4 (experimental) — that needs 172.8 GB at 8K context and the Apple M2 Ultra has 144 GB usable. Drop to Q3_K_M and it fits in 122.4 GB, with up to 256K of context.
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The numbers
| Model | DeepSeek V4-Flash |
| Parameters | 284B (13B active) |
| Quantization | Q4 (experimental) |
| VRAM needed (8K context) | 172.8 GB |
| Apple M2 Ultra usable memory | 144 GB |
| Verdict | Runs at a lower quant |
| Fits at | Q3_K_M (122.4 GB) |
| Max context | 256K |
DeepSeek V4-Flash on the Apple M2 Ultra: VRAM by quantization
| Quant | VRAM needed | Fits 192 GB? | Max context | Whole PC |
|---|---|---|---|---|
| F16 | 569.4 GB | ✗ No | — | — |
| Q8_0 | 303.1 GB | ✗ No | — | — |
| Q6_K | 234.3 GB | ✗ No | — | — |
| Q5_K_M | 202.7 GB | ✗ No | — | — |
| Q4_K_M | 172.8 GB | ✗ No | — | — |
| Q3_K_M | 122.4 GB | ✓ Yes | 256K | — |
| Q2_K | 94.7 GB | ✓ Yes | 512K | — |
Assumes an 8K-token context with an f16 KV cache, on an estimated architecture — this model publishes no config we can read. 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 (experimental) on the Apple M2 Ultra: 8K 172.8 GB ✗ · 32K 174.6 GB ✗ · 128K 181.5 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.
What to do next
Quantize to Q3_K_M. That is the cheapest fix — it costs some quality but no money.
No compatible GPU? DeepSeek V4-Flash on 128 GB of system RAM, CPU only: runs, but it is tight.
Running DeepSeek V4-Flash on this card:
DeepSeek V4-Flash needs ~173 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.
Other DeepSeek V4 sizes on the Apple M2 Ultra
- DeepSeek V4-Pro — does not fit (527.4 GB)
DeepSeek V4-Flash on nearby hardware
- AMD Ryzen AI Max+ 395 (128 GB) — runs at a lower quant
All DeepSeek V4 sizes on the Apple M2 Ultra | DeepSeek V4-Flash model page | Apple M2 Ultra GPU page | VRAM calculator | Check your hardware