Can DevStral 7B run on MacBook Pro M3 Max 128GB?

Q: Is unified memory on MacBook Pro M3 Max 128GB as fast as VRAM for DevStral 7B?

Not always. MacBook Pro M3 Max 128GB can often fit larger models thanks to unified memory, but a discrete GPU with dedicated high-bandwidth VRAM may still decode faster once the model fits. For this combination, the important distinction is capacity versus sustained throughput.

YES — Runs Great

A70Great

Estimated from fit model

DevStral 7B needs ~20.9 GB VRAM. MacBook Pro M3 Max 128GB has 92.2 GB. With Q4_K_M quantization, expect ~56 tok/s.

Runtime: llama.cppCapacity: RoomyBandwidth: LowStack: StandardBottleneck: Balanced

Operating mode

Choose the run profile you care about

Interactive favors responsiveness, while light API and scale-out lean harder on serving readiness. The fit stays the same, but the recommendation lens changes.

Current mode

Balanced

Balanced for general local use. Keeps the ranking neutral across personal and serving workflows.

Capabilities:

Select quantization to explore

Q4_K_M (Medium quality) — 20.9 GB, 60.4 tok/s, Runs well

20.9 GB required92.2 GB available

23% VRAM used

Fit status

Runs well

Decode

60.4 tok/s

TTFT

3204 ms

Safe context

Memory

20.9 GB / 92.2 GB

Memory breakdown

Weights4.3 GB

KV Cache2.0 GB

Runtime0.9 GB

Headroom13.8 GB

See how fast it feels

See how fast it feelsDevStral 7B on MacBook Pro M3 Max 128GB
1st promptCold start — includes initialization
>Write a Python function to sort a list
Here's a Python function that sorts a list using quicksort:

def quicksort(arr):
    if len(arr) <= 1:
        return arr
    pivot = arr[len(arr) // 2]
    left   = [x for x in arr if x < pivot]
    middle = [x for x in arr if x == pivot]
    right  = [x for x in arr if x > pivot]
    return quicksort(left) + middle + quicksort(right)

# Example usage
numbers = [3, 6, 8, 10, 1, 2, 1]
print(quicksort(numbers))  # [1, 1, 2, 3, 6, 8, 10]

The algorithm picks a pivot, partitions the list into smaller, equal, and larger elements, then recursively sorts each partition and concatenates the results.
2nd promptWarm — model ready, no init overhead
>Now add type hints and a docstring
def quicksort(arr: list[int]) -> list[int]:
    """Sort a list using the quicksort algorithm.

    Args:
        arr: List of integers to sort.

    Returns:
        A new sorted list.
    """
    if len(arr) <= 1:
        return arr
    pivot = arr[len(arr) // 2]
    left   = [x for x in arr if x < pivot]
    middle = [x for x in arr if x == pivot]
    right  = [x for x in arr if x > pivot]
    return quicksort(left) + middle + quicksort(right)

Added type hints for the input and return type, plus a Google-style docstring.
Estimated: 60.4 tok/s decode · 3.2s TTFT (warm) · 151 tok/s prefill

What limits this setup

This setup is broadly balanced for this model.

Shared-memory contention still exists

The OS, browser, and inference runtime all compete for the same physical memory pool, so real-world headroom is less forgiving than raw capacity suggests.

Best improvement path

Performance by workload

Workload	Grade	Fit	Decode	TTFT	Context
Chat	A	Runs well	60.4 tok/s	1748 ms	8K
Coding	A	Runs well	56.2 tok/s	3444 ms	8K
Agentic Coding	A	Runs well	60.4 tok/s	4661 ms	8K
Reasoning	A	Runs well	60.4 tok/s	3787 ms	8K
RAG	A	Runs well	60.4 tok/s	5826 ms	8K

Quantization options

How DevStral 7B (7B params) fits at each quantization level on MacBook Pro M3 Max 128GB (92.2 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	2.7 GB	Low	B64
Q3_K_S	3	3.4 GB	Low	B64
NVFP4	4

Get started

Copy-paste commands to run DevStral 7B on your machine.

Run

ollama run devstral

Your hardware

More models your MacBook Pro M3 Max 128GB can run

Model	Params	Grade	Decode	Capabilities
Devstral 2 123B Instruct	123B	S	3.3 tok/s
Qwen3-Coder 30B A3B Instruct	30.5B	S

Frequently asked questions

Can MacBook Pro M3 Max 128GB run DevStral 7B?

Yes, MacBook Pro M3 Max 128GB can run DevStral 7B with a A grade (Runs well). Expected decode speed: 56.2 tok/s.

How much VRAM does DevStral 7B need?

DevStral 7B (7B parameters) requires approximately 20.9 GB of memory with Q4_K_M quantization.

What is the best quantization for DevStral 7B?

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

What speed will DevStral 7B run at on MacBook Pro M3 Max 128GB?

On MacBook Pro M3 Max 128GB, DevStral 7B achieves approximately 56.2 tokens per second decode speed with a time-to-first-token of 3444ms using Q4_K_M quantization.

Can MacBook Pro M3 Max 128GB run DevStral 7B for coding?

For coding workloads, DevStral 7B on MacBook Pro M3 Max 128GB receives a A grade with 56.2 tok/s and 8K context.

What context window can DevStral 7B use on MacBook Pro M3 Max 128GB?

On MacBook Pro M3 Max 128GB, DevStral 7B can safely use up to 8K tokens of context. The model's official context limit is 8K, but available memory constrains the safe maximum.

Is unified memory on MacBook Pro M3 Max 128GB as fast as VRAM for DevStral 7B?

See all results for MacBook Pro M3 Max 128GB See all hardware for DevStral 7B

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