Question 1

Can RTX A4500 20GB run Phi-4 14B?

Accepted Answer

Yes, RTX A4500 20GB can run Phi-4 14B with a C grade (Runs well). Expected decode speed: 54.0 tok/s.

Question 2

How much VRAM does Phi-4 14B need?

Accepted Answer

Phi-4 14B (14B parameters) requires approximately 13.9 GB of memory with Q4_K_M quantization.

Question 3

What is the best quantization for Phi-4 14B?

Accepted Answer

The recommended quantization for Phi-4 14B is Q4_K_M, which balances quality and memory efficiency.

Workload	Grade	Fit	Decode	TTFT	Context
Agentic Coding	C	Runs well	54.0 tok/s	5219 ms	16K
Chat	C	Runs well	54.0 tok/s	1957 ms	12K
Coding	C	Runs well	54.0 tok/s	3588 ms	16K
RAG	C	Runs well	54.0 tok/s	6524 ms	16K
Reasoning	C	Runs well	54.0 tok/s	4240 ms	16K

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	5.5 GB	Low	D35
Q3_K_S	3	6.9 GB	Low	D36
NVFP4	4

Can RTX A4500 20GB run Phi-4 14B?

Memory breakdown