Can Qwen 3 14B run on RX 7900 XT 20GB?

YES — Runs Great

S96Excellent

Estimated from fit model

Qwen 3 14B needs ~13.9 GB VRAM. RX 7900 XT 20GB has 20.0 GB. With Q4_K_M quantization, expect ~61 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) — 13.9 GB, 60.7 tok/s, Runs well

13.9 GB required20.0 GB available

70% VRAM used

Fit status

Runs well

Decode

60.7 tok/s

TTFT

3189 ms

Safe context

56K

Memory

13.9 GB / 20.0 GB

Memory breakdown

Weights8.5 GB

KV Cache2.4 GB

Runtime0.9 GB

Headroom2.0 GB

See how fast it feels

See how fast it feelsQwen 3 14B on RX 7900 XT 20GB
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: 60.7 tok/s decode · 3.2s TTFT (warm) · 152 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	60.7 tok/s	1740 ms	56K
Coding	S	Runs well	60.7 tok/s	3189 ms	56K
Agentic Coding	S	Runs well	60.7 tok/s	4639 ms	56K
Reasoning	S	Runs well	60.7 tok/s	3769 ms	56K
RAG	S	Runs well	60.7 tok/s	5799 ms	56K

Quantization options

How Qwen 3 14B (14B params) fits at each quantization level on RX 7900 XT 20GB (20.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	5.5 GB	Low	S88
Q3_K_S	3	6.9 GB	Low	S89
NVFP4	4

Get started

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

Run

ollama run qwen3

Your hardware

More models your RX 7900 XT 20GB can run

Model	Params	Grade	Decode	Capabilities
Qwen3-Coder 30B A3B Instruct	30.5B	A	40.7 tok/s
Qwen 3.5 27B	27B	A	18.3 tok/s

Frequently asked questions

Can RX 7900 XT 20GB run Qwen 3 14B?

Yes, RX 7900 XT 20GB can run Qwen 3 14B with a S grade (Runs well). Expected decode speed: 60.7 tok/s.

How much VRAM does Qwen 3 14B need?

Qwen 3 14B (14B parameters) requires approximately 13.9 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 RX 7900 XT 20GB?

On RX 7900 XT 20GB, Qwen 3 14B achieves approximately 60.7 tokens per second decode speed with a time-to-first-token of 3189ms using Q4_K_M quantization.

Can RX 7900 XT 20GB run Qwen 3 14B for coding?

For coding workloads, Qwen 3 14B on RX 7900 XT 20GB receives a S grade with 60.7 tok/s and 56K context.

What context window can Qwen 3 14B use on RX 7900 XT 20GB?

On RX 7900 XT 20GB, Qwen 3 14B can safely use up to 56K tokens of context. The model's official context limit is 131K, but available memory constrains the safe maximum.

See all results for RX 7900 XT 20GB See all hardware for Qwen 3 14B

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