Can Magistral Small 2507 run on AMD Instinct MI250X 128GB?

YES — Runs Great

S88Excellent

Estimated from fit model

Magistral Small 2507 needs ~30.8 GB VRAM. AMD Instinct MI250X 128GB has 128.0 GB. With Q4_K_M quantization, expect ~183 tok/s.

Runtime: llama.cppCapacity: RoomyBandwidth: HighStack: 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) — 30.8 GB, 183.3 tok/s, Runs well

30.8 GB required128.0 GB available

24% VRAM used

Fit status

Runs well

Decode

183.3 tok/s

TTFT

1056 ms

Safe context

131K

Memory

30.8 GB / 128.0 GB

Memory breakdown

Weights14.6 GB

KV Cache2.4 GB

Runtime0.9 GB

Headroom12.8 GB

See how fast it feels

See how fast it feelsMagistral Small 2507 on AMD Instinct MI250X 128GB
1st promptCold start — includes initialization
>Solve: If a train travels at 60 mph for 2.5 hours, how far does it go?
Let me work through this step by step.

Given information:
  - Speed = 60 mph (miles per hour)
  - Time  = 2.5 hours

Formula: Distance = Speed x Time

Calculation:
  Distance = 60 mph x 2.5 h
           = 150 miles

The train travels 150 miles.

Double-check: at 60 mph the train covers 60 miles each hour. In half an hour it covers 30 miles. So in 2.5 hours: 60 + 60 + 30 = 150 miles. Confirmed.
2nd promptWarm — model ready, no init overhead
>What if the train stops for 20 minutes halfway?
The stop doesn't change the total distance covered while moving, but it affects total trip time.

Breakdown:
  - First half: 1.25 hours at 60 mph = 75 miles
  - Stop: 20 minutes (no distance)
  - Second half: 1.25 hours at 60 mph = 75 miles

Total distance: 150 miles (same)
Total time: 2.5 h + 0.33 h = 2.83 hours
Average speed: 150 / 2.83 = 53 mph

The distance stays the same but average speed drops to 53 mph because of the stop.
Estimated: 183.3 tok/s decode · 1.1s TTFT (warm) · 458 tok/s prefill

What limits this setup

This setup is broadly balanced for this model.

No major red flags

This recommendation has enough memory headroom and acceptable estimated speed for the selected workload.

Best improvement path

Performance by workload

Workload	Grade	Fit	Decode	TTFT	Context
Chat	S	Runs well	183.3 tok/s	576 ms	131K
Coding	S	Runs well	183.3 tok/s	1056 ms	131K
Agentic Coding	S	Runs well	183.3 tok/s	1536 ms	131K
Reasoning	S	Runs well	183.3 tok/s	1248 ms	131K
RAG	S	Runs well	183.3 tok/s	1921 ms	131K

Quantization options

How Magistral Small 2507 (24B params) fits at each quantization level on AMD Instinct MI250X 128GB (128.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	9.4 GB	Low	A80
Q3_K_S	3	11.8 GB	Low	A80
NVFP4	4	13.4 GB	Medium	A80
Q4_K_M	4	14.6 GB	Medium	A80
Q5_K_M	5	17.3 GB	High	A80
Q6_K	6	19.7 GB	High	A81
Q8_0	8	25.7 GB	Very High	A81
F16Best for your GPU	16	49.2 GB	Maximum	S85

Get started

Copy-paste commands to run Magistral Small 2507 on your machine.

Run

ollama run magistral

Your hardware

More models your AMD Instinct MI250X 128GB can run

Model	Params	Grade	Decode
Devstral 2 123B Instruct	123B	S	36.2 tok/s
Qwen3-Coder 30B A3B Instruct	30.5B	S	377.4 tok/s
Qwen 3.5 27B	27B	S	163.7 tok/s
Qwen 3.6 27B	27B	S	102 tok/s
Qwen 3.5 122B A10B	122B	S	100.3 tok/s

Frequently asked questions

Can AMD Instinct MI250X 128GB run Magistral Small 2507?

Yes, AMD Instinct MI250X 128GB can run Magistral Small 2507 with a S grade (Runs well). Expected decode speed: 183.3 tok/s.

How much VRAM does Magistral Small 2507 need?

Magistral Small 2507 (24B parameters) requires approximately 30.8 GB of memory with Q4_K_M quantization.

What is the best quantization for Magistral Small 2507?

The recommended quantization for Magistral Small 2507 is Q4_K_M, which balances quality and memory efficiency.

What speed will Magistral Small 2507 run at on AMD Instinct MI250X 128GB?

On AMD Instinct MI250X 128GB, Magistral Small 2507 achieves approximately 183.3 tokens per second decode speed with a time-to-first-token of 1056ms using Q4_K_M quantization.

Can AMD Instinct MI250X 128GB run Magistral Small 2507 for coding?

For coding workloads, Magistral Small 2507 on AMD Instinct MI250X 128GB receives a S grade with 183.3 tok/s and 131K context.

What context window can Magistral Small 2507 use on AMD Instinct MI250X 128GB?

On AMD Instinct MI250X 128GB, Magistral Small 2507 can safely use up to 131K tokens of context. The model's official context limit is 131K, but available memory constrains the safe maximum.

See all results for AMD Instinct MI250X 128GB See all hardware for Magistral Small 2507

Embed this result▼

Paste this snippet into any page to show a live fit card.

<iframe src="https://willitrunai.com/embed/magistral-small-2507-on-instinct-mi250x-128gb" width="400" height="180" frameborder="0" style="border:none;border-radius:12px;overflow:hidden;" title="Will It Run AI — fit result"></iframe>

Preview: