Can OLMo 2 13B run on RTX 3080 12GB?

YES — With Offload

A79Great

Estimated from fit model

OLMo 2 13B needs ~12.5 GB VRAM. RTX 3080 12GB has 12.0 GB. With Q4_K_M quantization, expect ~60 tok/s.

Runtime: llama.cppCapacity: OffloadBandwidth: HighStack: StandardBottleneck: Host offload

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) — 12.5 GB, 64.0 tok/s, Runs with offload (needs ~0.3 GB host RAM)

12.5 GB required12.0 GB available

104% VRAM needed

0.5 GB over capacity — needs offload or smaller quantization

Fit status

Runs with offload (needs ~0.3 GB host RAM)

Decode

64.0 tok/s

TTFT

3026 ms

Safe context

13K

Memory

12.5 GB / 12.0 GB

Memory breakdown

Weights7.9 GB

KV Cache2.4 GB

Runtime0.9 GB

Headroom1.2 GB

See how fast it feels

See how fast it feelsOLMo 2 13B on RTX 3080 12GB
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: 64.0 tok/s decode · 3.0s TTFT (warm) · 160 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	Tight fit	92.5 tok/s	1142 ms	13K
Coding	A	Runs with offload	60.4 tok/s	3203 ms	13K
Agentic Coding	F	Too heavy	43.9 tok/s	6413 ms	13K
Reasoning	A	Runs with offload (needs ~0.3 GB host RAM)	64.0 tok/s	3576 ms	13K
RAG	F	Too heavy	43.9 tok/s	8016 ms	13K

Quantization options

How OLMo 2 13B (13B params) fits at each quantization level on RTX 3080 12GB (12.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	5.1 GB	Low	A79
Q3_K_S	3	6.4 GB	Low	A79
NVFP4	4

Get started

Copy-paste commands to run OLMo 2 13B on your machine.

Run

docker run --rm -it ghcr.io/ggerganov/llama.cpp:full \
  --hf-repo "allenai/OLMo-2-13B-Instruct" \
  --hf-file "OLMo-2-13B-Instruct-Q4_K_M.gguf" \
  -c 4096 -ngl 99

Your hardware

More models your RTX 3080 12GB can run

Model	Params	Grade	Decode	Capabilities
Qwen 3 14B	14B	A	53.7 tok/s
Phi-4-reasoning-plus 14B	14.7B	A	42.6 tok/s

Frequently asked questions

Can RTX 3080 12GB run OLMo 2 13B?

Yes, RTX 3080 12GB can run OLMo 2 13B with a A grade (Runs with offload). Expected decode speed: 60.4 tok/s.

How much VRAM does OLMo 2 13B need?

OLMo 2 13B (13B parameters) requires approximately 12.5 GB of memory with Q4_K_M quantization.

What is the best quantization for OLMo 2 13B?

The recommended quantization for OLMo 2 13B is Q4_K_M, which balances quality and memory efficiency.

What speed will OLMo 2 13B run at on RTX 3080 12GB?

On RTX 3080 12GB, OLMo 2 13B achieves approximately 60.4 tokens per second decode speed with a time-to-first-token of 3203ms using Q4_K_M quantization.

Can RTX 3080 12GB run OLMo 2 13B for coding?

For coding workloads, OLMo 2 13B on RTX 3080 12GB receives a A grade with 60.4 tok/s and 13K context.

What context window can OLMo 2 13B use on RTX 3080 12GB?

On RTX 3080 12GB, OLMo 2 13B can safely use up to 13K tokens of context. The model's official context limit is 33K, but available memory constrains the safe maximum.

What should I upgrade first if OLMo 2 13B feels slow on RTX 3080 12GB?

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 RTX 3080 12GB See all hardware for OLMo 2 13B

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