Question 1

Can RTX 4000 Ada 20GB run Llama 2 7B Chat?

Accepted Answer

Yes, RTX 4000 Ada 20GB can run Llama 2 7B Chat with a C grade (Runs well). Expected decode speed: 65.8 tok/s.

Question 2

How much VRAM does Llama 2 7B Chat need?

Accepted Answer

Llama 2 7B Chat (7B parameters) requires approximately 8.6 GB of memory with Q4_K_M quantization.

Question 3

What is the best quantization for Llama 2 7B Chat?

Accepted Answer

The recommended quantization for Llama 2 7B Chat is Q4_K_M, which balances quality and memory efficiency.

Workload	Grade	Fit	Decode	TTFT	Context
Agentic Coding	C	Runs well	65.8 tok/s	4282 ms	66K
Chat	C	Runs well	60.7 tok/s	1740 ms	19K
Coding	C	Runs well	65.8 tok/s	2944 ms	37K
RAG	C	Runs well	65.8 tok/s	5353 ms	66K
Reasoning	C	Runs well	65.8 tok/s	3479 ms	37K

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	2.7 GB	Low	D32
Q3_K_S	3	3.4 GB	Low	D33
NVFP4	4

Can RTX 4000 Ada 20GB run Llama 2 7B Chat?

Memory breakdown