Can Mixtral 8x7B run on NVIDIA L40 48GB?

YES — Runs Great

B70Good

Estimated — low-sample bucket· few comparable runs

Mixtral 8x7B needs ~36.3 GB VRAM. NVIDIA L40 48GB has 48.0 GB. With Q4_K_M quantization, expect ~44 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) — 36.3 GB, 43.6 tok/s, Runs well

36.3 GB required48.0 GB available

76% VRAM used

Fit status

Runs well

Decode

43.6 tok/s

TTFT

4438 ms

Safe context

33K

Memory

36.3 GB / 48.0 GB

Memory breakdown

Weights28.7 GB

KV Cache2.0 GB

Runtime0.9 GB

Headroom4.8 GB

See how fast it feels

See how fast it feelsMixtral 8x7B on NVIDIA L40 48GB
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: 43.6 tok/s decode · 4.4s TTFT (warm) · 109 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	43.6 tok/s	2420 ms	33K
Coding	B	Runs well	43.6 tok/s	4438 ms	33K
Agentic Coding	B	Runs well	43.6 tok/s	6455 ms	33K
Reasoning	B	Runs well	43.6 tok/s	5244 ms	33K
RAG	B	Runs well	43.6 tok/s	8068 ms	33K

Quantization options

How Mixtral 8x7B (47B params) fits at each quantization level on NVIDIA L40 48GB (48.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	18.3 GB	Low	B61
Q3_K_S	3	23.0 GB	Low	B63
NVFP4	4	26.3 GB	Medium	B64
Q4_K_M	4	28.7 GB	Medium	B63
Q5_K_M	5	33.8 GB	High	B63
Q6_KBest for your GPU	6	38.5 GB	High	B63
Q8_0	8	50.3 GB	Very High	F0
F16	16	96.4 GB	Maximum	F0

Get started

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

Run

ollama run mixtral

Frequently asked questions

Can NVIDIA L40 48GB run Mixtral 8x7B?

Yes, NVIDIA L40 48GB can run Mixtral 8x7B with a B grade (Runs well). Expected decode speed: 43.6 tok/s.

How much VRAM does Mixtral 8x7B need?

Mixtral 8x7B (47B parameters) requires approximately 36.3 GB of memory with Q4_K_M quantization.

What is the best quantization for Mixtral 8x7B?

The recommended quantization for Mixtral 8x7B is Q4_K_M, which balances quality and memory efficiency.

What speed will Mixtral 8x7B run at on NVIDIA L40 48GB?

On NVIDIA L40 48GB, Mixtral 8x7B achieves approximately 43.6 tokens per second decode speed with a time-to-first-token of 4438ms using Q4_K_M quantization.

Can NVIDIA L40 48GB run Mixtral 8x7B for coding?

For coding workloads, Mixtral 8x7B on NVIDIA L40 48GB receives a B grade with 43.6 tok/s and 33K context.

What context window can Mixtral 8x7B use on NVIDIA L40 48GB?

On NVIDIA L40 48GB, Mixtral 8x7B can safely use up to 33K tokens of context. The model's official context limit is 33K, but available memory constrains the safe maximum.

See all results for NVIDIA L40 48GB See all hardware for Mixtral 8x7B

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