Can I Run Qwen 3.5 122B A10B on a Apple M5 Ultra (192GB)?
Runs at Q8_0 — near-lossless quality.
4 quantizations fit your 192GB
| Quant | Min VRAM | Recommended | File size | Headroom |
|---|---|---|---|---|
| Q8_0BEST | 130.6 GB | 132.1 GB | 129.6 GB | +61.4 GB |
| Q6_K | 101.5 GB | 103.0 GB | 100.5 GB | +90.5 GB |
| Q5_K_M | 87.6 GB | 89.1 GB | 86.6 GB | +104.4 GB |
| Q4_K_M | 75.0 GB | 76.5 GB | 74.0 GB | +117.0 GB |
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Top-ranked open-source models that fit in 192GB.
FAQ
Can the Apple M5 Ultra (192GB) run Qwen 3.5 122B A10B?
Yes. The Apple M5 Ultra (192GB)'s 192GB of unified memory is enough to run Qwen 3.5 122B A10B at Q8_0 quantization (130.6GB required).
What's the best quantization to use?
Q8_0 is the highest-precision quantization that fits in your 192GB. It uses about 130.6GB of memory and 132.1GB 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.