Can Mixtral 8x7B run on AMD Instinct MI325X 256GB?

YES — Runs Great

B62Good

○Estimated from fit model

Mixtral 8x7B needs ~57.1 GB VRAM. AMD Instinct MI325X 256GB has 256.0 GB. With Q4_K_M quantization, expect ~315 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) — 57.1 GB, 315.1 tok/s, Runs well

57.1 GB required256.0 GB available

22% VRAM used

Fit status

Runs well

Decode

315.1 tok/s

TTFT

614 ms

Safe context

33K

Memory

57.1 GB / 256.0 GB

Memory breakdown

Weights28.7 GB

KV Cache2.0 GB

Runtime0.9 GB

Headroom25.6 GB

See how fast it feels

See how fast it feelsMixtral 8x7B on AMD Instinct MI325X 256GB
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: 315.1 tok/s decode · 614ms TTFT (warm) · 788 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	B	Runs well	315.1 tok/s	350 ms	33K
Coding	B	Runs well	315.1 tok/s	614 ms	33K
Agentic Coding	B	Runs well	315.1 tok/s	894 ms	33K
Reasoning	B	Runs well	315.1 tok/s	726 ms	33K
RAG	B	Runs well	315.1 tok/s	1117 ms	33K

Quantization options

How Mixtral 8x7B (47B params) fits at each quantization level on AMD Instinct MI325X 256GB (256.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	18.3 GB	Low	C52
Q3_K_S	3	23.0 GB	Low	C53
NVFP4	4	26.3 GB	Medium	C53
Q4_K_M	4	28.7 GB	Medium	C53
Q5_K_M	5	33.8 GB	High	C54
Q6_K	6	38.5 GB	High	C54
Q8_0	8	50.3 GB	Very High	C55
F16Best for your GPU	16	96.4 GB	Maximum	B59

Get started

Copy-paste commands to run Mixtral 8x7B on your machine.

Run

ollama run mixtral

Frequently asked questions

See all results for AMD Instinct MI325X 256GB See all hardware for Mixtral 8x7B

URL: https://willitrunai.com/can-run/mixtral-8x7b-on-instinct-mi325x-256gb

⇱ Mixtral 8x7B on AMD Instinct MI325X 256GB? YES