Compatibility Check
Can I Run Phi-3 Medium 14B on AMD Radeon RX 6600 XT?
Sort of — AMD Radeon RX 6600 XT can run Phi-3 Medium 14B (Q8_0) only by spilling layers to RAM. Generation will be slow.
Estimated ~6 tokens/sec on the Q8_0 quantization.
Hybrid CPU+GPU
Best variant: Q8_0
CPU + GPU hybrid — not enough VRAM (8 GB < 16 GB min), but 64 GB RAM is sufficient. Expect significantly slower inference.
- GPU VRAM
- 8 GB
- Min VRAM (best fit)
- 16 GB
- Recommended VRAM
- 20 GB
- Estimated tok/s
- ~6
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Every Phi-3 Medium 14B quantization on AMD Radeon RX 6600 XT
Each row runs the compatibility engine against your VRAM, RAM, and the model's requirements.
| Quantization | File Size | Min VRAM | Rec VRAM | Context | Verdict | Estimated tok/s |
|---|---|---|---|---|---|---|
| Q4_K_M | 8.2 GB | 9.5 GB | 12 GB | 4K / 4K | Hybrid CPU+GPU | ~9 |
| Q8_0Best fit | 14.8 GB | 16 GB | 20 GB | 4K / 4K | Hybrid CPU+GPU | ~6 |
Upgrade options that fit Phi-3 Medium 14B better
Rent GPU instead of buying one
If local fit is weak, cloud GPU gets you running today without hardware upgrade.