Can the AMD Radeon RX 7900 XTX run Phi-3.5 Mini 3.8B?
- FP16
- Q8_0
- Q6_K
- Q5_K_M
- Q4_K_M
- Q3_K_M
- Q2_K
Yes. The AMD Radeon RX 7900 XTX can run Phi-3.5 Mini 3.8B fully in VRAM at FP16 (full quality), using about 11.5 GB of the 24 GB available, at roughly 75 tokens/second.
Run it with Ollama
With Ollama installed, one command downloads and starts Phi-3.5 Mini 3.8B:
ollama run phi3.5:3.8bOllama's default download is Q4_K_M (about 6.1 GB here). You have room for FP16, which is full quality: pick that GGUF in LM Studio or from Hugging Face.
Run it in the cloud
No AMD Radeon RX 7900 XTX? Run Phi-3.5 Mini 3.8B in the cloud.
Rent a cloud GPU by the hour. No upfront cost, stop any time.
Memory needed by quantization
At 8,192 tokens of context. The black line marks the 24 GB the AMD Radeon RX 7900 XTX can use.
| Quant | Quality | Memory | Fits? | Speed | |
|---|---|---|---|---|---|
| FP16 | Full quality | 11.5 GB | Fits | ~75 tok/s | |
| Q8_0 | Near-lossless | 7.9 GB | Fits | ~142 tok/s | |
| Q6_K | Excellent | 7 GB | Fits | ~184 tok/s | |
| Q5_K_M | Very good | 6.5 GB | Fits | ~212 tok/s | |
| Q4_K_M | Good, most popular | 6.1 GB | Fits | ~249 tok/s | |
| Q3_K_M | Noticeably degraded | 5.7 GB | Fits | ~309 tok/s | |
| Q2_K | Heavily degraded | 5.3 GB | Fits | ~402 tok/s |
GPUs that run Phi-3.5 Mini 3.8B comfortably
Frequently asked questions
Can AMD Radeon RX 7900 XTX run Phi-3.5 Mini 3.8B?
Yes. The AMD Radeon RX 7900 XTX can run Phi-3.5 Mini 3.8B fully in VRAM at FP16 (full quality), using about 11.5 GB of the 24 GB available, at roughly 75 tokens/second.
How much VRAM does Phi-3.5 Mini 3.8B need?
About 6.1 GB at Q4_K_M with 8,192 tokens of context, and about 11.5 GB at full FP16 precision.
How fast is Phi-3.5 Mini 3.8B on the AMD Radeon RX 7900 XTX?
Roughly 75 tokens per second at FP16, estimated from the AMD Radeon RX 7900 XTX's 960 GB/s memory bandwidth.