How much VRAM does Devstral Small 1.1 need?

Devstral Small 1.1 (24B parameters) requires approximately 33.4 GB of memory with Q4_K_M quantization.

What is the best quantization for Devstral Small 1.1?

The recommended quantization for Devstral Small 1.1 is Q4_K_M, which balances quality and memory efficiency.

Can it run?

Yes, Mac Studio M2 Ultra 128GB can run Devstral Small 1.1 with a C grade (Runs well). Expected decode speed: 35.5 tok/s.

CUsable

Runs well

Using Q4_K_M in Ollama

Capabilities:

Fit status

Runs well

Decode

35.5 tok/s

TTFT

5451 ms

Safe context

44K

Memory

33.4 GB / 92.2 GB

Weights14.6 GB

KV Cache3.8 GB

Runtime1.2 GB

Headroom13.8 GB

Workload	Grade	Fit	Decode	TTFT	Context
Agentic Coding	C	Runs well	31.7 tok/s	8885 ms	79K
Chat	C	Runs well	31.7 tok/s	3332 ms	23K
Coding	C	Runs well	35.5 tok/s	5451 ms	44K
RAG	C	Runs well	31.7 tok/s	11106 ms	79K
Reasoning	C	Runs well	31.7 tok/s	7219 ms	44K

How Devstral Small 1.1 (24B params) fits at each quantization level on Mac Studio M2 Ultra 128GB (92.2 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	9.4 GB	Low	D32
Q3_K_S	3	11.8 GB	Low	D32
NVFP4	4

Ollama

ollama run devstral-small-2507

HuggingFace

huggingface-cli download devstral-small-2507

Upgrade options

AMD Instinct MI250X 128GBBudget pick

C170.5 tok/s decode

~$15,000 MSRP

NVIDIA H200 141GBBest value

C275.4 tok/s decode

~$30,000 MSRP

NVIDIA GH200 96GBBiggest leap

C221.3 tok/s decode