Can Vicuna 13B run on RX 7900 XTX 24GB?

YES — With Offload

A74Great

Estimated from fit model

Vicuna 13B needs ~23.4 GB VRAM. RX 7900 XTX 24GB has 24.0 GB. With Q4_K_M quantization, expect ~87 tok/s.

Runtime: llama.cppCapacity: OffloadBandwidth: 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) — 23.4 GB, 87.2 tok/s, Runs with offload

23.4 GB required24.0 GB available

98% VRAM used

Fit status

Runs with offload

Decode

87.2 tok/s

TTFT

2221 ms

Safe context

Memory

23.4 GB / 24.0 GB

Memory breakdown

Weights7.9 GB

KV Cache12.2 GB

Runtime0.9 GB

Headroom2.4 GB

See how fast it feels

See how fast it feelsVicuna 13B on RX 7900 XTX 24GB
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: 87.2 tok/s decode · 2.2s TTFT (warm) · 218 tok/s prefill

What limits this setup

This setup is broadly balanced for this model.

Very little memory headroom

You can run the model, but there is not much room left for longer context, bigger batches, extra apps, or future model updates.

Best improvement path

Buy headroom, not only minimum fit

A slightly larger memory tier gives you safer context growth and makes the recommendation more future-proof.

Performance by workload

Workload	Grade	Fit	Decode	TTFT	Context
Chat	A	Runs well	87.2 tok/s	1212 ms	4K
Coding	A	Runs with offload	87.2 tok/s	2221 ms	4K
Agentic Coding	F	Too heavy	28.4 tok/s	9904 ms	4K
Reasoning	A	Runs with offload	87.2 tok/s	2625 ms	4K
RAG	F	Too heavy	28.4 tok/s	12381 ms	4K

Quantization options

How Vicuna 13B (13B params) fits at each quantization level on RX 7900 XTX 24GB (24.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	5.1 GB	Low	B66
Q3_K_S	3	6.4 GB	Low	B67
NVFP4	4	7.3 GB	Medium	B67
Q4_K_M	4	7.9 GB	Medium	B68
Q5_K_M	5	9.4 GB	High	B69
Q6_K	6	10.7 GB	High	B70
Q8_0Best for your GPU	8	13.9 GB	Very High	A71
F16	16	26.7 GB	Maximum	F0

Get started

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

Run

ollama run vicuna:13b

Your hardware

More models your RX 7900 XTX 24GB can run

Model	Params	Grade	Decode
Qwen3-Coder 30B A3B Instruct	30.5B	S	104.5 tok/s
Qwen 3.5 27B	27B	S	45.3 tok/s
Qwen 3.6 27B	27B	S	29.8 tok/s
Qwen 3.6 35B A3B	35B	A	45 tok/s
Qwen3-VL 30B A3B Instruct	30B	S	108.1 tok/s

Frequently asked questions

Can RX 7900 XTX 24GB run Vicuna 13B?

Yes, RX 7900 XTX 24GB can run Vicuna 13B with a A grade (Runs with offload). Expected decode speed: 87.2 tok/s.

How much VRAM does Vicuna 13B need?

Vicuna 13B (13B parameters) requires approximately 23.4 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 RX 7900 XTX 24GB?

On RX 7900 XTX 24GB, Vicuna 13B achieves approximately 87.2 tokens per second decode speed with a time-to-first-token of 2221ms using Q4_K_M quantization.

Can RX 7900 XTX 24GB run Vicuna 13B for coding?

For coding workloads, Vicuna 13B on RX 7900 XTX 24GB receives a A grade with 87.2 tok/s and 4K context.

What context window can Vicuna 13B use on RX 7900 XTX 24GB?

On RX 7900 XTX 24GB, 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.

What should I upgrade first if Vicuna 13B feels slow on RX 7900 XTX 24GB?

Buy headroom, not only minimum fit. A slightly larger memory tier gives you safer context growth and makes the recommendation more future-proof.

See all results for RX 7900 XTX 24GB See all hardware for Vicuna 13B

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<iframe src="https://willitrunai.com/embed/vicuna-13b-on-rx-7900-xtx-24gb" 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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