Question 1

Can H100 NVL 188GB run Devstral 2 123B Instruct?

Accepted Answer

Yes, H100 NVL 188GB can run Devstral 2 123B Instruct with a C grade (Runs well). Expected decode speed: 74.9 tok/s.

Question 2

How much VRAM does Devstral 2 123B Instruct need?

Accepted Answer

Devstral 2 123B Instruct (123B parameters) requires approximately 115.4 GB of memory with Q4_K_M quantization.

Question 3

What is the best quantization for Devstral 2 123B Instruct?

Accepted Answer

The recommended quantization for Devstral 2 123B Instruct is Q4_K_M, which balances quality and memory efficiency.

Workload	Grade	Fit	Decode	TTFT	Context
Agentic Coding	B	Runs well	74.9 tok/s	4330 ms	45K
Chat	C	Runs well	74.9 tok/s	1624 ms	14K
Coding	C	Runs well	74.9 tok/s	2977 ms	26K
RAG	B	Runs well	74.9 tok/s	5412 ms	45K
Reasoning	C	Runs well	74.9 tok/s	3518 ms	26K

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	48.0 GB	Low	D35
Q3_K_S	3	60.3 GB	Low	D36
NVFP4	4

Can H100 NVL 188GB run Devstral 2 123B Instruct?

Memory breakdown