Can I Run Qwen 2.5 14B Instruct on AMD Radeon RX 7900 XTX?
Autor: Jakub Rusinowski · Ostatnia aktualizacja: 12 lipca 2026
Yes. Qwen 2.5 14B Instruct needs 10.9 GB at 8K context (8.5 GB weights + 2.4 GB KV cache/overhead) at Q4_K_M and the AMD Radeon RX 7900 XTX has 24 GB, leaving about 13.1 GB of headroom, at roughly 55 tok/s (estimated) with room for up to 64K of context.
See what else this hardware can run →
The numbers
| Model | Qwen 2.5 14B Instruct |
| Parameters | 14B |
| Quantization | Q4_K_M |
| VRAM needed (8K context) | 10.9 GB |
| AMD Radeon RX 7900 XTX VRAM | 24 GB |
| Verdict | Runs |
| Max context | 64K |
| Estimated speed | ~55 tok/s |
Qwen 2.5 14B Instruct on the AMD Radeon RX 7900 XTX: VRAM by quantization
| Quant | VRAM needed | Fits 24 GB? | Max context | Whole PC |
|---|---|---|---|---|
| F16 | 30.4 GB | ✗ No | — | — |
| Q8_0 | 17.3 GB | ✓ Yes | 32K | — |
| Q6_K | 13.9 GB | ✓ Yes | 32K | — |
| Q5_K_M | 12.3 GB | ✓ Yes | 64K | — |
| Q4_K_M | 10.9 GB | ✓ Yes | 64K | — |
| Q3_K_M | 8.4 GB | ✓ Yes | 64K | — |
| Q2_K | 7 GB | ✓ Yes | 64K | — |
Assumes an 8K-token context with an f16 KV cache. A longer window needs more; a quantized KV cache needs less. “Max context” is the largest window that still fits in 24 GB. Figures are estimates from parameter count, quantization and memory bandwidth — the analyzer lets you tune KV-cache quant and context.
Context costs VRAM too. At Q4_K_M on the AMD Radeon RX 7900 XTX: 8K 10.9 GB · 32K 15.7 GB · 128K 35 GB ✗. Past 128K it no longer fits 24 GB — a q8_0 KV cache buys roughly half of that back, which the calculator will price for you.
What to do next
Nothing to change — run it at Q4_K_M. If you want more capability, check whether the next size up also fits.
No compatible GPU? Qwen 2.5 14B Instruct on 16 GB of system RAM, CPU only: runs, but it is tight.
Running Qwen 2.5 14B Instruct on this card:
At 2 hrs/day, buying (~$999) beats renting at $0.34/hr after about 4.1 years.
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Cloud rates verified 2026-07 — estimates, and marketplace prices vary. Buying price is GPU MSRP only, not a full PC.
Other Qwen 2.5 Family sizes on the AMD Radeon RX 7900 XTX
- Qwen 2.5 72B Instruct — does not fit (47 GB)
- Qwen 2.5 Coder 32B — runs (22.3 GB)
- Qwen 2.5 7B Instruct — runs (5.9 GB)
Qwen 2.5 14B Instruct on nearby hardware
- AMD Radeon RX 7900 XT (20 GB) — runs
- NVIDIA GeForce RTX 5090 (32 GB) — runs
All Qwen 2.5 Family sizes on the AMD Radeon RX 7900 XTX | Qwen 2.5 14B Instruct model page | AMD Radeon RX 7900 XTX GPU page | VRAM calculator | Check your hardware