Can Pixtral 12B run on RX 7900 XTX 24GB?

YES — Runs Great

A77Great

Estimated from fit model

Pixtral 12B needs ~13.1 GB VRAM. RX 7900 XTX 24GB has 24.0 GB. With Q4_K_M quantization, expect ~102 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) — 13.1 GB, 101.5 tok/s, Runs well

13.1 GB required24.0 GB available

55% VRAM used

Fit status

Runs well

Decode

101.5 tok/s

TTFT

1907 ms

Safe context

88K

Memory

13.1 GB / 24.0 GB

Memory breakdown

Weights7.3 GB

KV Cache2.4 GB

Runtime0.9 GB

Headroom2.4 GB

See how fast it feels

See how fast it feelsPixtral 12B 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: 101.5 tok/s decode · 1.9s TTFT (warm) · 254 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	101.5 tok/s	1040 ms	88K
Coding	A	Runs well	101.5 tok/s	1907 ms	88K
Agentic Coding	A	Runs well	101.5 tok/s	2774 ms	88K
Reasoning	A	Runs well	101.5 tok/s	2254 ms	88K
RAG	A	Runs well	101.5 tok/s	3468 ms	88K

Quantization options

How Pixtral 12B (12B params) fits at each quantization level on RX 7900 XTX 24GB (24.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	4.7 GB	Low	B69
Q3_K_S	3	5.9 GB	Low	B70
NVFP4	4	6.7 GB	Medium	A70
Q4_K_M	4	7.3 GB	Medium	A70
Q5_K_M	5	8.6 GB	High	A71
Q6_K	6	9.8 GB	High	A72
Q8_0Best for your GPU	8	12.8 GB	Very High	A74
F16	16	24.6 GB	Maximum	F0

Get started

Copy-paste commands to run Pixtral 12B on your machine.

Run

ollama run pixtral

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 Pixtral 12B?

Yes, RX 7900 XTX 24GB can run Pixtral 12B with a A grade (Runs well). Expected decode speed: 101.5 tok/s.

How much VRAM does Pixtral 12B need?

Pixtral 12B (12B parameters) requires approximately 13.1 GB of memory with Q4_K_M quantization.

What is the best quantization for Pixtral 12B?

The recommended quantization for Pixtral 12B is Q4_K_M, which balances quality and memory efficiency.

What speed will Pixtral 12B run at on RX 7900 XTX 24GB?

On RX 7900 XTX 24GB, Pixtral 12B achieves approximately 101.5 tokens per second decode speed with a time-to-first-token of 1907ms using Q4_K_M quantization.

Can RX 7900 XTX 24GB run Pixtral 12B for coding?

For coding workloads, Pixtral 12B on RX 7900 XTX 24GB receives a A grade with 101.5 tok/s and 88K context.

What context window can Pixtral 12B use on RX 7900 XTX 24GB?

On RX 7900 XTX 24GB, Pixtral 12B can safely use up to 88K tokens of context. The model's official context limit is 131K, but available memory constrains the safe maximum.

See all results for RX 7900 XTX 24GB See all hardware for Pixtral 12B

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Preview:

Workload

Grade

Fit

Decode

TTFT

Context

Chat

Runs well

101.5 tok/s

1040 ms

88K

Coding

Runs well

101.5 tok/s

1907 ms

88K

Agentic Coding

Runs well

101.5 tok/s

2774 ms

88K

Reasoning

Runs well

101.5 tok/s

2254 ms

88K

RAG

Runs well

101.5 tok/s

3468 ms

88K

Quantization options

How Pixtral 12B (12B params) fits at each quantization level on RX 7900 XTX 24GB (24.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	4.7 GB	Low	B69
Q3_K_S	3	5.9 GB	Low	B70
NVFP4	4	6.7 GB	Medium	A70
Q4_K_M	4	7.3 GB	Medium	A70
Q5_K_M	5	8.6 GB	High	A71
Q6_K	6	9.8 GB	High	A72
Q8_0Best for your GPU	8	12.8 GB	Very High	A74
F16	16	24.6 GB	Maximum	F0

Model

Params

Grade

Decode

Capabilities

Qwen3-Coder 30B A3B Instruct

30.5B

104.5 tok/s

Qwen 3.5 27B

27B

45.3 tok/s

Qwen 3.6 27B

27B

29.8 tok/s

Qwen 3.6 35B A3B

35B

45 tok/s

Qwen3-VL 30B A3B Instruct

30B

108.1 tok/s

Frequently asked questions

Can RX 7900 XTX 24GB run Pixtral 12B?

Yes, RX 7900 XTX 24GB can run Pixtral 12B with a A grade (Runs well). Expected decode speed: 101.5 tok/s.

How much VRAM does Pixtral 12B need?

Pixtral 12B (12B parameters) requires approximately 13.1 GB of memory with Q4_K_M quantization.

What is the best quantization for Pixtral 12B?

The recommended quantization for Pixtral 12B is Q4_K_M, which balances quality and memory efficiency.

What speed will Pixtral 12B run at on RX 7900 XTX 24GB?

On RX 7900 XTX 24GB, Pixtral 12B achieves approximately 101.5 tokens per second decode speed with a time-to-first-token of 1907ms using Q4_K_M quantization.

Can RX 7900 XTX 24GB run Pixtral 12B for coding?

For coding workloads, Pixtral 12B on RX 7900 XTX 24GB receives a A grade with 101.5 tok/s and 88K context.

What context window can Pixtral 12B use on RX 7900 XTX 24GB?

On RX 7900 XTX 24GB, Pixtral 12B can safely use up to 88K tokens of context. The model's official context limit is 131K, but available memory constrains the safe maximum.