Can Vicuna 13B run on NVIDIA L20 48GB?

YES — Runs Great

A74Great

Estimated from fit model

Vicuna 13B needs ~25.8 GB VRAM. NVIDIA L20 48GB has 48.0 GB. With Q4_K_M quantization, expect ~84 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) — 25.8 GB, 83.5 tok/s, Runs well

25.8 GB required48.0 GB available

54% VRAM used

Fit status

Runs well

Decode

83.5 tok/s

TTFT

2318 ms

Safe context

Memory

25.8 GB / 48.0 GB

Memory breakdown

Weights7.9 GB

KV Cache12.2 GB

Runtime0.9 GB

Headroom4.8 GB

See how fast it feels

See how fast it feelsVicuna 13B on NVIDIA L20 48GB
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: 83.5 tok/s decode · 2.3s TTFT (warm) · 209 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	A	Runs well	83.5 tok/s	1264 ms	4K
Coding	A	Runs well	83.5 tok/s	2318 ms	4K
Agentic Coding	A	Runs well	83.5 tok/s	3372 ms	4K
Reasoning	A	Runs well	83.5 tok/s	2740 ms	4K
RAG	A	Runs well	83.5 tok/s	4215 ms	4K

Quantization options

How Vicuna 13B (13B params) fits at each quantization level on NVIDIA L20 48GB (48.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	5.1 GB	Low	B62
Q3_K_S	3	6.4 GB	Low	B63
NVFP4	4	7.3 GB	Medium	B63
Q4_K_M	4	7.9 GB	Medium	B63
Q5_K_M	5	9.4 GB	High	B63
Q6_K	6	10.7 GB	High	B64
Q8_0	8	13.9 GB	Very High	B65
F16Best for your GPU	16	26.7 GB	Maximum	B69

Get started

Copy-paste commands to run Vicuna 13B on your machine.

Run

ollama run vicuna:13b

Your hardware

More models your NVIDIA L20 48GB can run

Model	Params	Grade	Decode
Qwen3-Coder 30B A3B Instruct	30.5B	S	68.7 tok/s
Qwen 3.5 27B	27B	S	28.6 tok/s
Qwen 3.6 27B	27B	S	18.8 tok/s
Qwen 3.6 35B A3B	35B	S	85.8 tok/s
Qwen3-VL 30B A3B Instruct	30B	S	98.6 tok/s

Frequently asked questions

Can NVIDIA L20 48GB run Vicuna 13B?

Yes, NVIDIA L20 48GB can run Vicuna 13B with a A grade (Runs well). Expected decode speed: 83.5 tok/s.

How much VRAM does Vicuna 13B need?

Vicuna 13B (13B parameters) requires approximately 25.8 GB of memory with Q4_K_M quantization.

What is the best quantization for Vicuna 13B?

The recommended quantization for Vicuna 13B is Q4_K_M, which balances quality and memory efficiency.

What speed will Vicuna 13B run at on NVIDIA L20 48GB?

On NVIDIA L20 48GB, Vicuna 13B achieves approximately 83.5 tokens per second decode speed with a time-to-first-token of 2318ms using Q4_K_M quantization.

Can NVIDIA L20 48GB run Vicuna 13B for coding?

For coding workloads, Vicuna 13B on NVIDIA L20 48GB receives a A grade with 83.5 tok/s and 4K context.

What context window can Vicuna 13B use on NVIDIA L20 48GB?

On NVIDIA L20 48GB, Vicuna 13B can safely use up to 4K tokens of context. The model's official context limit is 4K, but available memory constrains the safe maximum.

See all results for NVIDIA L20 48GB See all hardware for Vicuna 13B

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