Can Qwen 3 14B run on RTX A4000 16GB?

YES — Tight Fit

S92Excellent

Estimated from fit model

Qwen 3 14B needs ~13.8 GB VRAM. RTX A4000 16GB has 16.0 GB. With Q4_K_M quantization, expect ~40 tok/s.

Runtime: OllamaCapacity: TightBandwidth: LowStack: BasicBottleneck: 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) — 13.8 GB, 39.7 tok/s, Tight fit

13.8 GB required16.0 GB available

86% VRAM used

Fit status

Tight fit

Decode

39.7 tok/s

TTFT

4882 ms

Safe context

31K

Memory

13.8 GB / 16.0 GB

Memory breakdown

Weights8.5 GB

KV Cache2.4 GB

Runtime1.2 GB

Headroom1.6 GB

See how fast it feels

See how fast it feelsQwen 3 14B on RTX A4000 16GB
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: 39.7 tok/s decode · 4.9s TTFT (warm) · 99 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	39.7 tok/s	2663 ms	31K
Coding	S	Tight fit	39.7 tok/s	4882 ms	31K
Agentic Coding	S	Runs with offload (needs ~0.1 GB host RAM)	28.9 tok/s	9747 ms	31K
Reasoning	S	Tight fit	39.7 tok/s	5769 ms	31K
RAG	S	Runs with offload (needs ~0.1 GB host RAM)	28.9 tok/s	12184 ms

Quantization options

How Qwen 3 14B (14B params) fits at each quantization level on RTX A4000 16GB (16.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	5.5 GB	Low	S90
Q3_K_S	3	6.9 GB	Low	S91
NVFP4	4

Get started

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

Run

ollama run qwen3

Frequently asked questions

Can RTX A4000 16GB run Qwen 3 14B?

Yes, RTX A4000 16GB can run Qwen 3 14B with a S grade (Tight fit). Expected decode speed: 39.7 tok/s.

How much VRAM does Qwen 3 14B need?

Qwen 3 14B (14B parameters) requires approximately 13.8 GB of memory with Q4_K_M quantization.

What is the best quantization for Qwen 3 14B?

The recommended quantization for Qwen 3 14B is Q4_K_M, which balances quality and memory efficiency.

What speed will Qwen 3 14B run at on RTX A4000 16GB?

On RTX A4000 16GB, Qwen 3 14B achieves approximately 39.7 tokens per second decode speed with a time-to-first-token of 4882ms using Q4_K_M quantization.

Can RTX A4000 16GB run Qwen 3 14B for coding?

For coding workloads, Qwen 3 14B on RTX A4000 16GB receives a S grade with 39.7 tok/s and 31K context.

What context window can Qwen 3 14B use on RTX A4000 16GB?

On RTX A4000 16GB, Qwen 3 14B can safely use up to 31K tokens of context. The model's official context limit is 131K, but available memory constrains the safe maximum.

See all results for RTX A4000 16GB See all hardware for Qwen 3 14B

Embed this result▼

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<iframe src="https://willitrunai.com/embed/qwen-3-14b-on-a4000-16gb" width="400" height="180" frameborder="0" style="border:none;border-radius:12px;overflow:hidden;" title="Will It Run AI — fit result"></iframe>

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