Question 1

Can Mac Studio M2 Ultra 128GB run Llama 2 7B Chat?

Accepted Answer

Yes, Mac Studio M2 Ultra 128GB can run Llama 2 7B Chat with a C grade (Runs well). Expected decode speed: 121.8 tok/s.

Question 2

How much VRAM does Llama 2 7B Chat need?

Accepted Answer

Llama 2 7B Chat (7B parameters) requires approximately 20.4 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	108.7 tok/s	2591 ms	137K
Chat	C	Runs well	108.7 tok/s	972 ms	37K
Coding	C	Runs well	121.8 tok/s	1590 ms	72K
RAG	C	Runs well	108.7 tok/s	3239 ms	137K
Reasoning	C	Runs well	108.7 tok/s	2106 ms	72K

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	2.7 GB	Low	D30
Q3_K_S	3	3.4 GB	Low	D30
NVFP4	4

Can Mac Studio M2 Ultra 128GB run Llama 2 7B Chat?

Memory breakdown