Question 1

Can I run Phi-3 Medium 14B on a AMD Radeon RX 6750 XT?

Accepted Answer

Yes — AMD Radeon RX 6750 XT runs Phi-3 Medium 14B fully on GPU at the Q4_K_M quantization. Full GPU inference — 12 GB VRAM meets the 12 GB recommendation.

Question 2

What quantization of Phi-3 Medium 14B should I use on a AMD Radeon RX 6750 XT?

Accepted Answer

For 12 GB VRAM on the AMD Radeon RX 6750 XT, the Q4_K_M variant is the best fit. Estimated ~42.1 tokens/sec on the Q4_K_M quantization.

Question 3

How fast does Phi-3 Medium 14B run on AMD Radeon RX 6750 XT?

Accepted Answer

Roughly 42.1 tokens/sec for Q4_K_M. Real speed depends on context length, backend (Ollama, llama.cpp, LM Studio), and KV cache size.

Question 4

What if AMD Radeon RX 6750 XT is not enough for Phi-3 Medium 14B?

Accepted Answer

Try a smaller quantization variant or run on CPU + RAM with the trade-off of slower generation.

Quantization	File Size	Min VRAM	Rec VRAM	Context	Verdict	Estimated tok/s
Q4_K_MBest fit	8.2 GB	9.5 GB	12 GB	4K / 4K	Full GPU	~42.1
Q8_0	14.8 GB	16 GB	20 GB	4K / 4K	Hybrid CPU+GPU	~9

Can I Run Phi-3 Medium 14B on AMD Radeon RX 6750 XT?

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Every Phi-3 Medium 14B quantization on AMD Radeon RX 6750 XT