Can I Run Qwen 3.5 9B on a AMD Ryzen AI Max+ 395 (128GB)?
Runs at full precision (fp16). Zero quality loss.
5 quantizations fit your 96.0GB
| Quant | Min VRAM | Recommended | File size | Headroom |
|---|---|---|---|---|
| fp16BEST | 19.0 GB | 20.5 GB | 18.0 GB | +77.0 GB |
| Q8_0 | 10.6 GB | 12.1 GB | 9.6 GB | +85.4 GB |
| Q6_K | 8.4 GB | 9.9 GB | 7.4 GB | +87.6 GB |
| Q5_K_M | 7.4 GB | 8.9 GB | 6.4 GB | +88.6 GB |
| Q4_K_M | 6.5 GB | 8.0 GB | 5.5 GB | +89.5 GB |
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FAQ
Can the AMD Ryzen AI Max+ 395 (128GB) run Qwen 3.5 9B?
Yes. The AMD Ryzen AI Max+ 395 (128GB)'s 96.0GB of unified memory is enough to run Qwen 3.5 9B at fp16 quantization (19.0GB required).
What's the best quantization to use?
fp16 is the highest-precision quantization that fits in your 96.0GB. It uses about 19.0GB of memory and 20.5GB 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.