Can I Run Qwen 3 Coder on a Apple M5 Ultra (512GB)?
Runs at Q8_0 — near-lossless quality.
4 quantizations fit your 512GB
| Quant | Min VRAM | Recommended | File size | Headroom |
|---|---|---|---|---|
| Q8_0BEST | 511.0 GB | 512.5 GB | 510.0 GB | +1.0 GB |
| Q6_K | 396.4 GB | 397.9 GB | 395.4 GB | +115.6 GB |
| Q5_K_M | 341.8 GB | 343.3 GB | 340.8 GB | +170.2 GB |
| Q4_K_M | 292.0 GB | 293.5 GB | 291.0 GB | +220.0 GB |
Try it in the cloud first
Don't want to download Qwen 3 Coder just to try it? Use a hosted API or rent a GPU by the second.
Affiliate links — we earn a commission at no cost to you.
All quant variants, benchmark scores, and use-case tags.
Top-ranked open-source models that fit in 512GB.
FAQ
Can the Apple M5 Ultra (512GB) run Qwen 3 Coder?
Yes. The Apple M5 Ultra (512GB)'s 512GB of unified memory is enough to run Qwen 3 Coder at Q8_0 quantization (511.0GB required).
What's the best quantization to use?
Q8_0 is the highest-precision quantization that fits in your 512GB. It uses about 511.0GB of memory and 512.5GB 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.