Can Qwen3-VL 30B A3B Instruct run on NVIDIA L20 48GB?

YES — Runs Great

S96Excellent

Estimated from fit model

Qwen3-VL 30B A3B Instruct needs ~27.0 GB VRAM. NVIDIA L20 48GB has 48.0 GB. With Q4_K_M quantization, expect ~75 tok/s.

Runtime: vLLMCapacity: RoomyBandwidth: HighStack: OptimizedBottleneck: 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) — 27.0 GB, 75.0 tok/s, Runs well

27.0 GB required48.0 GB available

56% VRAM used

Fit status

Runs well

Decode

75.0 tok/s

TTFT

2583 ms

Safe context

246K

Memory

27.0 GB / 48.0 GB

Memory breakdown

Weights18.3 GB

KV Cache1.5 GB

Runtime2.4 GB

Headroom4.8 GB

See how fast it feels

See how fast it feelsQwen3-VL 30B A3B Instruct on NVIDIA L20 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: 75.0 tok/s decode · 2.6s TTFT (warm) · 187 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	75.0 tok/s	1409 ms	246K
Coding	S	Runs well	75.0 tok/s	2583 ms	246K
Agentic Coding	S	Runs well	68.9 tok/s	4085 ms	246K
Reasoning	S	Runs well	75.0 tok/s	3052 ms	246K
RAG	S	Runs well	75.0 tok/s	4696 ms	246K

Quantization options

How Qwen3-VL 30B A3B Instruct (30B params) fits at each quantization level on NVIDIA L20 48GB (48.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	11.7 GB	Low	S86
Q3_K_S	3	14.7 GB	Low	S87
NVFP4	4	16.8 GB	Medium	S87
Q4_K_M	4	18.3 GB	Medium	S88
Q5_K_M	5	21.6 GB	High	S89
Q6_K	6	24.6 GB	High	S90
Q8_0Best for your GPU	8	32.1 GB	Very High	S90
F16	16	61.5 GB	Maximum	F0

Get started

Copy-paste commands to run Qwen3-VL 30B A3B Instruct on your machine.

Run

lms load Qwen3-VL-30B-A3B-Instruct && lms server start

Your hardware

More models your NVIDIA L20 48GB can run

Model	Params	Grade	Decode	Capabilities
Qwen3-Coder 30B A3B Instruct	30.5B	S	72.5 tok/s
Qwen 3.6 35B A3B	35B	S	60.9 tok/s

Frequently asked questions

Can NVIDIA L20 48GB run Qwen3-VL 30B A3B Instruct?

Yes, NVIDIA L20 48GB can run Qwen3-VL 30B A3B Instruct with a S grade (Runs well). Expected decode speed: 75.0 tok/s.

How much VRAM does Qwen3-VL 30B A3B Instruct need?

Qwen3-VL 30B A3B Instruct (30B parameters) requires approximately 27.0 GB of memory with Q4_K_M quantization.

What is the best quantization for Qwen3-VL 30B A3B Instruct?

The recommended quantization for Qwen3-VL 30B A3B Instruct is Q4_K_M, which balances quality and memory efficiency.

What speed will Qwen3-VL 30B A3B Instruct run at on NVIDIA L20 48GB?

On NVIDIA L20 48GB, Qwen3-VL 30B A3B Instruct achieves approximately 75.0 tokens per second decode speed with a time-to-first-token of 2583ms using Q4_K_M quantization.

Can NVIDIA L20 48GB run Qwen3-VL 30B A3B Instruct for coding?

For coding workloads, Qwen3-VL 30B A3B Instruct on NVIDIA L20 48GB receives a S grade with 75.0 tok/s and 246K context.

What context window can Qwen3-VL 30B A3B Instruct use on NVIDIA L20 48GB?

On NVIDIA L20 48GB, Qwen3-VL 30B A3B Instruct can safely use up to 246K tokens of context. The model's official context limit is 256K, but available memory constrains the safe maximum.

See all results for NVIDIA L20 48GB See all hardware for Qwen3-VL 30B A3B Instruct

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