Can Pixtral 12B run on RTX 5080 16GB?

YES — Runs Great

A80Great

Estimated from fit model

Pixtral 12B needs ~12.6 GB VRAM. RTX 5080 16GB has 16.0 GB. With Q4_K_M quantization, expect ~92 tok/s.

Runtime: OllamaCapacity: RoomyBandwidth: HighStack: BasicBottleneck: 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) — 12.6 GB, 91.6 tok/s, Runs well

12.6 GB required16.0 GB available

79% VRAM used

Fit status

Runs well

Decode

91.6 tok/s

TTFT

2113 ms

Safe context

39K

Memory

12.6 GB / 16.0 GB

Memory breakdown

Weights7.3 GB

KV Cache2.4 GB

Runtime1.2 GB

Headroom1.6 GB

See how fast it feels

See how fast it feelsPixtral 12B on RTX 5080 16GB
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: 91.6 tok/s decode · 2.1s TTFT (warm) · 229 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	91.6 tok/s	1152 ms	39K
Coding	A	Runs well	91.6 tok/s	2113 ms	39K
Agentic Coding	A	Tight fit	91.6 tok/s	3073 ms	39K
Reasoning	A	Runs well	91.6 tok/s	2497 ms	39K
RAG	A	Tight fit	91.6 tok/s	3841 ms	39K

Inference speed

Pixtral 12B inference speed — tokens per second by GPU & Mac

Estimated decode speed (tokens/sec) for Pixtral 12B at Q4_K_M across popular GPUs and Apple Silicon, using the fastest local runtime per device. Fastest is RTX 5090 32GB at ~168 tok/s. Speed is memory-bandwidth bound, so cards that fit the whole model in VRAM run far faster than ones that offload to system RAM.

GPU / Mac	Memory	Quant	Speed (tok/s)	Fits?
RTX 5090 32GB	32 GB	Q4_K_M	168.0	Fits
RTX 4090 24GB	24 GB	Q4_K_M	112.5	Fits
RX 7900 XTX 24GB	24 GB	Q4_K_M	101.5	Fits
RTX 3090 24GB	24 GB	Q4_K_M	96.2	Fits
RTX 4080 Super 16GB	16 GB	Q4_K_M	94.2	Fits
Mac Studio M3 Ultra 256GB	256 GB	Q4_K_M	81.8	Fits
Mac Studio M2 Ultra 128GB	128 GB	Q4_K_M	68.1	Fits
Mac Studio M1 Ultra 128GB	128 GB	Q4_K_M	64.6	Fits
RTX 4070 12GB	12 GB	Q4_K_M	58.3	Offloads
MacBook Pro M4 Max 128GB	128 GB	Q4_K_M	44.5	Fits
MacBook Pro M4 Max 64GB	64 GB	Q4_K_M	44.5	Fits
MacBook Pro M3 Max 64GB	64 GB	Q4_K_M	35.2	Fits
RTX 3060 12GB	12 GB	Q4_K_M	34.2	Offloads
MacBook Pro M1 Max 64GB	64 GB	Q4_K_M	32.3	Fits
MacBook Pro M4 Pro 48GB	48 GB	Q4_K_M	27.2	Fits
RTX 4060 8GB	8 GB	Q4_K_M	9.7	Too big

Estimates for single-stream decoding at Q4_K_M; real tokens/sec varies with prompt length, context, batch size, and runtime build. Prompt processing (prefill) is faster than the decode figures shown here.

Quantization options

How Pixtral 12B (12B params) fits at each quantization level on RTX 5080 16GB (16.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	4.7 GB	Low	A72
Q3_K_S	3	5.9 GB	Low	A73
NVFP4	4	6.7 GB	Medium	A74
Q4_K_M	4	7.3 GB	Medium	A75
Q5_K_M	5	8.6 GB	High	A75
Q6_KBest for your GPU	6	9.8 GB	High	A75
Q8_0	8	12.8 GB	Very High	F0
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 RTX 5080 16GB can run

Model	Params	Grade	Decode
Qwen 3 14B	14B	S	78.9 tok/s
Phi-4-reasoning-plus 14B	14.7B	S	74.8 tok/s
GPT-OSS 20B	21B	A	71.6 tok/s
Ministral 3 14B	14B	S	78.5 tok/s
Codestral 2 25.08	22B	A	27.9 tok/s

Frequently asked questions

Can RTX 5080 16GB run Pixtral 12B?

Yes, RTX 5080 16GB can run Pixtral 12B with a A grade (Runs well). Expected decode speed: 91.6 tok/s.

How much VRAM does Pixtral 12B need?

Pixtral 12B (12B parameters) requires approximately 12.6 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 RTX 5080 16GB?

On RTX 5080 16GB, Pixtral 12B achieves approximately 91.6 tokens per second decode speed with a time-to-first-token of 2113ms using Q4_K_M quantization.

Can RTX 5080 16GB run Pixtral 12B for coding?

For coding workloads, Pixtral 12B on RTX 5080 16GB receives a A grade with 91.6 tok/s and 39K context.

What context window can Pixtral 12B use on RTX 5080 16GB?

On RTX 5080 16GB, Pixtral 12B can safely use up to 39K tokens of context. The model's official context limit is 131K, but available memory constrains the safe maximum.

See all results for RTX 5080 16GB See all hardware for Pixtral 12B

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