Can OLMo 2 13B run on RX 6800 16GB?

YES — Runs Great

A81Great

Estimated from fit model

OLMo 2 13B needs ~12.9 GB VRAM. RX 6800 16GB has 16.0 GB. With Q4_K_M quantization, expect ~36 tok/s.

Runtime: llama.cppCapacity: RoomyBandwidth: MediumStack: 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) — 12.9 GB, 38.4 tok/s, Runs well

12.9 GB required16.0 GB available

81% VRAM used

Fit status

Runs well

Decode

38.4 tok/s

TTFT

5048 ms

Safe context

33K

Memory

12.9 GB / 16.0 GB

Memory breakdown

Weights7.9 GB

KV Cache2.4 GB

Runtime0.9 GB

Headroom1.6 GB

See how fast it feels

See how fast it feelsOLMo 2 13B on RX 6800 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: 38.4 tok/s decode · 5.0s TTFT (warm) · 96 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	38.4 tok/s	2753 ms	33K
Coding	A	Runs well	35.5 tok/s	5452 ms	33K
Agentic Coding	A	Runs with offload	38.4 tok/s	7343 ms	33K
Reasoning	A	Runs well	38.4 tok/s	5966 ms	33K
RAG	A	Runs with offload	38.4 tok/s	9178 ms	33K

Quantization options

How OLMo 2 13B (13B params) fits at each quantization level on RX 6800 16GB (16.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	5.1 GB	Low	A76
Q3_K_S	3	6.4 GB	Low	A77
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 RX 6800 16GB can run

Model	Params	Grade	Decode	Capabilities
Qwen 3 14B	14B	S	35.6 tok/s
Phi-4-reasoning-plus 14B	14.7B	S	33.8 tok/s

Frequently asked questions

Can RX 6800 16GB run OLMo 2 13B?

Yes, RX 6800 16GB can run OLMo 2 13B with a A grade (Runs well). Expected decode speed: 35.5 tok/s.

How much VRAM does OLMo 2 13B need?

OLMo 2 13B (13B parameters) requires approximately 12.9 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 RX 6800 16GB?

On RX 6800 16GB, OLMo 2 13B achieves approximately 35.5 tokens per second decode speed with a time-to-first-token of 5452ms using Q4_K_M quantization.

Can RX 6800 16GB run OLMo 2 13B for coding?

For coding workloads, OLMo 2 13B on RX 6800 16GB receives a A grade with 35.5 tok/s and 33K context.

What context window can OLMo 2 13B use on RX 6800 16GB?

On RX 6800 16GB, OLMo 2 13B can safely use up to 33K tokens of context. The model's official context limit is 33K, but available memory constrains the safe maximum.

See all results for RX 6800 16GB See all hardware for OLMo 2 13B

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