Can Ministral 3 14B run on NVIDIA DGX Spark 128GB?

YES — With F16

A78Great

Estimated from fit model

Ministral 3 14B needs ~46.6 GB VRAM. NVIDIA DGX Spark 128GB has 0 MB. With F16 quantization, expect ~7 tok/s.

Runtime: vLLMCapacity: RoomyBandwidth: LowStack: OptimizedBottleneck: Memory bandwidth

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.

Ministral 3 14B at Q4_K_M needs 13.4 GB — too much for NVIDIA DGX Spark 128GB (0.0 GB). Runs at F16 (46.6 GB) with maximum quality. 8 quantization levels fit.

Capabilities:

Select quantization to explore

Q4_K_M (Medium quality) — 26.4 GB, 16.5 tok/s, Runs well

26.4 GB required108.8 GB available

24% VRAM used

Fit status

Runs well

Decode

16.5 tok/s

TTFT

11737 ms

Safe context

262K

Memory

26.4 GB / 108.8 GB

Memory breakdown

Weights8.5 GB

KV Cache2.4 GB

Runtime2.4 GB

Headroom13.1 GB

See how fast it feels

See how fast it feelsMinistral 3 14B on NVIDIA DGX Spark 128GB
1st promptCold start — includes initialization
>What is local AI inference?
Local AI inference means running an AI language model directly on your own hardware — your laptop, desktop, or server — instead of sending requests to a remote cloud API.

When you run inference locally the model weights are loaded into your GPU or unified memory. Each token you generate requires reading those weights from memory, so memory bandwidth is the main bottleneck for decode speed.

Key benefits of running locally:
  - Full privacy: your prompts never leave your machine
  - No per-token cost or rate limits
  - Works offline once the model is downloaded
  - Latency depends only on your hardware
2nd promptWarm — model ready, no init overhead
>How much VRAM do I need?
It depends on the model size and quantization level. A rough rule of thumb:

  Model size     Q4 (4-bit)    Q8 (8-bit)    FP16
  7B params      ~4.3 GB       ~7.5 GB       ~14 GB
  13B params     ~7.9 GB       ~13.9 GB      ~26 GB
  70B params     ~42.7 GB      ~74.9 GB      ~140 GB

Most people use 4-bit quantization (Q4_K_M) which gives 90-95% of full quality at a fraction of the memory. A 24 GB GPU can comfortably run most 7B-13B models.
Estimated: 16.5 tok/s decode · 11.7s TTFT (warm) · 41 tok/s prefill

What limits this setup

The model fits in shared memory, but shared-memory bandwidth is now the real limiter.

Fit does not mean dedicated-VRAM speed

Unified or shared memory can make a model technically fit, but sustained tokens per second may still trail a discrete high-bandwidth GPU with less total memory.

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

Prioritize bandwidth, not only capacity

If this workload feels slow, the next useful step is often a GPU tier with materially faster memory bandwidth rather than only a small bump in capacity.

Performance by workload

Workload	Grade	Fit	Decode	TTFT	Context
Chat	A	Runs well	16.5 tok/s	6402 ms	262K
Coding	F	Too heavy	2.8 tok/s	70095 ms	4K
Agentic Coding	A	Runs well	16.5 tok/s	17072 ms	262K
Reasoning	A	Runs well	16.5 tok/s	13871 ms	262K
RAG	A	Runs well	16.5 tok/s	21340 ms	262K

Quantization options

How Ministral 3 14B (14B params) fits at each quantization level on NVIDIA DGX Spark 128GB (92.2 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	5.5 GB	Low	A74
Q3_K_S	3	6.9 GB	Low	A74
NVFP4	4	7.8 GB	Medium	A74
Q4_K_M	4	8.5 GB	Medium	A74
Q5_K_M	5	10.1 GB	High	A75
Q6_K	6	11.5 GB	High	A75
Q8_0	8	15.0 GB	Very High	A75
F16Best for your GPU	16	28.7 GB	Maximum	A77

Get started

Copy-paste commands to run Ministral 3 14B on your machine.

Run

docker run --rm -it ghcr.io/ggerganov/llama.cpp:full \
  --hf-repo "mistralai/Ministral-3-14B-Instruct-2512" \
  --hf-file "Ministral-3-14B-Instruct-2512-Q4_K_M.gguf" \
  -c 4096 -ngl 99

Upgrade-Optionen

Hardware, die Ministral 3 14B gut ausführt

NVIDIA H200 141GBGünstige Wahl

141 GB VRAM (+13)4800 GB/s (+4527)

Raises estimated decode speed by about 1088%.196 tok/s Dekodierung

Raises estimated decode speed by about 1088%.

Adds memory headroom for longer context windows and future model growth.

ca. $30,000 MSRP

NVIDIA H200 PCIe 141GBBestes Preis-Leistungs-Verhältnis

141 GB VRAM (+13)4800 GB/s (+4527)

Raises estimated decode speed by about 1088%.196 tok/s Dekodierung

Raises estimated decode speed by about 1088%.

Adds memory headroom for longer context windows and future model growth.

ca. $30,000 MSRP

NVIDIA B200 180GBNVIDIA-Upgrade

180 GB VRAM (+52)8000 GB/s (+7727)

Raises estimated decode speed by about 1088%.196 tok/s Dekodierung

Raises estimated decode speed by about 1088%.

Adds memory headroom for longer context windows and future model growth.

ca. $30,000 MSRP

Frequently asked questions

Can NVIDIA DGX Spark 128GB run Ministral 3 14B?

Yes, NVIDIA DGX Spark 128GB can run Ministral 3 14B at F16 quantization (Runs well). The recommended Q4_K_M requires 13.4 GB which exceeds available memory, but at F16 it needs only 46.6 GB. Expected decode speed: 6.9 tok/s.

How much VRAM does Ministral 3 14B need?

Ministral 3 14B (14B parameters) requires approximately 13.4 GB at Q4_K_M quantization. On NVIDIA DGX Spark 128GB, it fits at F16 using 46.6 GB.

What is the best quantization for Ministral 3 14B?

The recommended quantization is Q4_K_M, but on NVIDIA DGX Spark 128GB the best fitting quantization is F16, which uses 46.6 GB.

What speed will Ministral 3 14B run at on NVIDIA DGX Spark 128GB?

On NVIDIA DGX Spark 128GB, Ministral 3 14B achieves approximately 6.9 tokens per second decode speed with a time-to-first-token of 28174ms using F16 quantization.

Can NVIDIA DGX Spark 128GB run Ministral 3 14B for coding?

For coding workloads, Ministral 3 14B on NVIDIA DGX Spark 128GB receives a F grade with 2.8 tok/s and 4K context.

What context window can Ministral 3 14B use on NVIDIA DGX Spark 128GB?

On NVIDIA DGX Spark 128GB, Ministral 3 14B can safely use up to 262K tokens of context at F16 quantization. The model's official context limit is 262K, but available memory constrains the safe maximum.

What should I upgrade first if Ministral 3 14B feels slow on NVIDIA DGX Spark 128GB?

Prioritize bandwidth, not only capacity. If this workload feels slow, the next useful step is often a GPU tier with materially faster memory bandwidth rather than only a small bump in capacity.

Is unified memory on NVIDIA DGX Spark 128GB as fast as VRAM for Ministral 3 14B?

Not always. NVIDIA DGX Spark 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.

See all results for NVIDIA DGX Spark 128GB See all hardware for Ministral 3 14B

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