Can the Radeon RX 7900 XTX run Qwen3.5 9B?
Fits comfortably at Q4_K_M.
Qwen3.5 9B is 9.65B parameters. At Q4_K_M the weights are about 5.4 GiB; with the 1.5 GiB runtime reserve that is 6.9 GiB against the card's 24GB, leaving about 17.1 GiB for context.
All three quants
24GB card| Quant | Weights | With reserve | Verdict | Headroom |
|---|---|---|---|---|
| Q4_K_Mthe everyday quant | 5.4 GiB | 6.9 GiB | Fits comfortably | 17.1 GiB |
| Q8_0near-lossless | 9.5 GiB | 11.0 GiB | Fits comfortably | 13.0 GiB |
| FP16full weights | 18.0 GiB | 19.5 GiB | Fits comfortably | 4.5 GiB |
Verdict rules: fits comfortably when weights plus reserve sit within 85% of VRAM; tight when they fit with little left for context; CPU offload when they exceed VRAM by up to 2x (runs, slowly, with layers in system RAM); no beyond that. The KV cache per token depends on the model's architecture and is not modelled here.
Good match. Get the card.
The Radeon RX 7900 XTX clears Qwen3.5 9B at Q4_K_M and at Q8_0. Live listings below; this page was rebuilt 2026-08-23.
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About the model
Qwen3.5 9B by Alibaba Qwen: 262,144-token native context, text + vision, released 2026 under the Apache-2.0. Model card → · Hosted pricing on PicksByModel →