Can EXAONE 4.0 1.2B run on RX 6800 16GB?

YES — Runs Great

C41Usable

Estimated from fit model

EXAONE 4.0 1.2B needs ~3.4 GB VRAM. RX 6800 16GB has 16.0 GB. With Q4_K_M quantization, expect ~17 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) — 3.4 GB, 16.8 tok/s, Runs well

3.4 GB required16.0 GB available

21% VRAM used

Fit status

Runs well

Decode

16.8 tok/s

TTFT

11524 ms

Safe context

1.5M

Memory

3.4 GB / 16.0 GB

Memory breakdown

Weights0.7 GB

KV Cache0.1 GB

Runtime0.9 GB

Headroom1.6 GB

See how fast it feels

See how fast it feelsEXAONE 4.0 1.2B 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: 16.8 tok/s decode · 11.5s TTFT (warm) · 42 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	C	Runs well	16.8 tok/s	6286 ms	1.0M
Coding	C	Runs well	16.8 tok/s	11524 ms	1.5M
Agentic Coding	C	Runs well	16.8 tok/s	16762 ms	1.5M
Reasoning	C	Runs well	16.8 tok/s	13619 ms	1.5M
RAG	C	Runs well	16.8 tok/s	20952 ms	1.5M

Quantization options

How EXAONE 4.0 1.2B (1.2000000476837158B params) fits at each quantization level on RX 6800 16GB (16.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	0.5 GB	Low	C45
Q3_K_S	3	0.6 GB	Low	C45
NVFP4	4

Get started

Copy-paste commands to run EXAONE 4.0 1.2B on your machine.

Run

lms load hf-lgai-exaone--exaone-4-0-1-2b-gguf && lms server start

Upgrade options

Hardware that runs EXAONE 4.0 1.2B well

MacBook Pro M4 32GBBudget pick

32 GB Unified (+16)

Adds memory headroom for longer context windows and future model growth.16.8 tok/s decode

Adds memory headroom for longer context windows and future model growth.

~$799 MSRP

MacBook Pro M3 24GBBest value

24 GB Unified (+8)

This setup is broadly balanced for this model.16.8 tok/s decode

~$1,099 MSRP

Frequently asked questions

Can RX 6800 16GB run EXAONE 4.0 1.2B?

Yes, RX 6800 16GB can run EXAONE 4.0 1.2B with a C grade (Runs well). Expected decode speed: 16.8 tok/s.

How much VRAM does EXAONE 4.0 1.2B need?

EXAONE 4.0 1.2B (1.2000000476837158B parameters) requires approximately 3.4 GB of memory with Q4_K_M quantization.

What is the best quantization for EXAONE 4.0 1.2B?

The recommended quantization for EXAONE 4.0 1.2B is Q4_K_M, which balances quality and memory efficiency.

What speed will EXAONE 4.0 1.2B run at on RX 6800 16GB?

On RX 6800 16GB, EXAONE 4.0 1.2B achieves approximately 16.8 tokens per second decode speed with a time-to-first-token of 11524ms using Q4_K_M quantization.

Can RX 6800 16GB run EXAONE 4.0 1.2B for coding?

For coding workloads, EXAONE 4.0 1.2B on RX 6800 16GB receives a C grade with 16.8 tok/s and 1.5M context.

What context window can EXAONE 4.0 1.2B use on RX 6800 16GB?

On RX 6800 16GB, EXAONE 4.0 1.2B can safely use up to 1.5M tokens of context. The model's official context limit is —, but available memory constrains the safe maximum.

See all results for RX 6800 16GB See all hardware for EXAONE 4.0 1.2B

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