Can I Run DeepSeek V4 Flash on a Apple M1 Ultra (128GB)?
Runs at full precision (fp16). Zero quality loss.
5 quantizations fit your 128GB
| Quant | Min VRAM | Recommended | File size | Headroom |
|---|---|---|---|---|
| fp16BEST | 75.0 GB | 76.5 GB | 74.0 GB | +53.0 GB |
| Q8_0 | 40.3 GB | 41.8 GB | 39.3 GB | +87.7 GB |
| Q6_K | 31.5 GB | 33.0 GB | 30.5 GB | +96.5 GB |
| Q5_K_M | 27.3 GB | 28.8 GB | 26.3 GB | +100.7 GB |
| Q4_K_M | 23.4 GB | 24.9 GB | 22.4 GB | +104.6 GB |
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Top-ranked open-source models that fit in 128GB.
FAQ
Can the Apple M1 Ultra (128GB) run DeepSeek V4 Flash?
Yes. The Apple M1 Ultra (128GB)'s 128GB of unified memory is enough to run DeepSeek V4 Flash at fp16 quantization (75.0GB required).
What's the best quantization to use?
fp16 is the highest-precision quantization that fits in your 128GB. It uses about 75.0GB of memory and 76.5GB recommended for comfortable inference.
What if I need more headroom for context length?
KV cache memory grows with context length. The numbers above assume a baseline 2K-4K context. For long-context use (32K+), add another 2-6GB depending on the model architecture.