Can the Radeon RX 7900 XTX run Phi-4?
Yes. Phi-4 fits the Radeon RX 7900 XTX's 24 GB at Q4_K_M (about 10.3 GB needed), running at an estimated 65 tok/s. There's room for up to Q8_0 if you want higher quality.
Every quantization
Phi-4 (14B) on 24 GB
| Quant | Weights | Needs | Fit | Est. speed |
|---|---|---|---|---|
| Q4_K_M | 8.5 GB | 10.3 GB | Fits easily | ~65 tok/s |
| Q5_K_M | 10.5 GB | 12.3 GB | Fits easily | ~52 tok/s |
| Q8_0 | 16 GB | 17.8 GB | Fits | ~34 tok/s |
| FP16 | 28 GB | 29.8 GB | Too big | - |
Estimates. Needs = weights + 1.8 GB for KV cache and runtime at modest context. Speed is single-stream decode scaled from the Radeon RX 7900 XTX's 960 GB/s bandwidth (Estimated from memory bandwidth (llama.cpp decode)). Long contexts need more memory and run slower.
Run it
Copy, paste, go
ollama run phi-4:14bllama-server -hf microsoft/phi-4-gguf -ngl 99Ollama pulls a Q4 build by default. Pick a larger quant only if the table above says it fits. Full Phi-4 details →
Compare
Same model, other hardware - and other models on this card
Phi-4 on other hardware
- RTX 5090~121 tok/s
- RTX 5090 D~121 tok/s
- RTX 6000D~106 tok/s
- RTX 4090~74 tok/s
- RTX 5080~65 tok/s
- RTX 3090~64 tok/s
- RTX 3080 Ti~62 tok/s
- RTX 5080 Mobile~60 tok/s
Also runs on the Radeon RX 7900 XTX
- GLM-4.7-Flash~212 tok/s
- Qwen3-30B-A3B-Instruct-2507~207 tok/s
- Qwen3.6 27B~34 tok/s
- Qwen3.8 27B~34 tok/s
- Gemma 4 26B A4B~162 tok/s
- gpt-oss-20b~183 tok/s
- Qwen2.5-Coder-14B-Instruct~61 tok/s
- Qwen3 14B~69 tok/s
Frequently asked
Quick answers
Can the AMD Radeon RX 7900 XTX run Phi-4?
Yes. Phi-4 fits the Radeon RX 7900 XTX's 24 GB at Q4_K_M (about 10.3 GB needed), running at an estimated 65 tok/s. There's room for up to Q8_0 if you want higher quality.
How much VRAM does Phi-4 need?
About 8.5 GB of weights at Q4_K_M, 16 GB at Q8_0 and 28 GB at FP16. Add roughly 1.8 GB for the KV cache and runtime at modest context lengths.
How fast is Phi-4 on the Radeon RX 7900 XTX?
Roughly 65 tokens per second at Q4_K_M (single user, llama.cpp-style decode). This is an estimate from the Radeon RX 7900 XTX's 960 GB/s memory bandwidth.