Can EXAONE 3.5 7.8B Instruct run on RX 7900 XT 20GB?

YES — Runs Great

C51Usable

Estimated from fit model

EXAONE 3.5 7.8B Instruct needs ~8.6 GB VRAM. RX 7900 XT 20GB has 20.0 GB. With Q4_K_M quantization, expect ~101 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) — 8.6 GB, 100.9 tok/s, Runs well

8.6 GB required20.0 GB available

43% VRAM used

Fit status

Runs well

Decode

100.9 tok/s

TTFT

1919 ms

Safe context

216K

Memory

8.6 GB / 20.0 GB

Memory breakdown

Weights4.8 GB

KV Cache0.9 GB

Runtime0.9 GB

Headroom2.0 GB

See how fast it feels

See how fast it feelsEXAONE 3.5 7.8B Instruct on RX 7900 XT 20GB
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: 100.9 tok/s decode · 1.9s TTFT (warm) · 252 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	100.9 tok/s	1047 ms	216K
Coding	C	Runs well	100.9 tok/s	1919 ms	216K
Agentic Coding	C	Runs well	100.9 tok/s	2791 ms	216K
Reasoning	C	Runs well	100.9 tok/s	2268 ms	216K
RAG	C	Runs well	100.9 tok/s	3489 ms	216K

Quantization options

How EXAONE 3.5 7.8B Instruct (7.800000190734863B params) fits at each quantization level on RX 7900 XT 20GB (20.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	3.0 GB	Low	C45
Q3_K_S	3	3.8 GB	Low	C46
NVFP4	4	4.4 GB	Medium	C46
Q4_K_M	4	4.8 GB	Medium	C46
Q5_K_M	5	5.6 GB	High	C47
Q6_K	6	6.4 GB	High	C48
Q8_0	8	8.3 GB	Very High	C49
F16Best for your GPU	16	16.0 GB	Maximum	C50

Get started

Copy-paste commands to run EXAONE 3.5 7.8B Instruct on your machine.

Run

lms load hf-lmstudio-community--exaone-3-5-7-8b-instruct-gguf && lms server start

Frequently asked questions

Can RX 7900 XT 20GB run EXAONE 3.5 7.8B Instruct?

Yes, RX 7900 XT 20GB can run EXAONE 3.5 7.8B Instruct with a C grade (Runs well). Expected decode speed: 100.9 tok/s.

How much VRAM does EXAONE 3.5 7.8B Instruct need?

EXAONE 3.5 7.8B Instruct (7.800000190734863B parameters) requires approximately 8.6 GB of memory with Q4_K_M quantization.

What is the best quantization for EXAONE 3.5 7.8B Instruct?

The recommended quantization for EXAONE 3.5 7.8B Instruct is Q4_K_M, which balances quality and memory efficiency.

What speed will EXAONE 3.5 7.8B Instruct run at on RX 7900 XT 20GB?

On RX 7900 XT 20GB, EXAONE 3.5 7.8B Instruct achieves approximately 100.9 tokens per second decode speed with a time-to-first-token of 1919ms using Q4_K_M quantization.

Can RX 7900 XT 20GB run EXAONE 3.5 7.8B Instruct for coding?

For coding workloads, EXAONE 3.5 7.8B Instruct on RX 7900 XT 20GB receives a C grade with 100.9 tok/s and 216K context.

What context window can EXAONE 3.5 7.8B Instruct use on RX 7900 XT 20GB?

On RX 7900 XT 20GB, EXAONE 3.5 7.8B Instruct can safely use up to 216K tokens of context. The model's official context limit is —, but available memory constrains the safe maximum.

See all results for RX 7900 XT 20GB See all hardware for EXAONE 3.5 7.8B Instruct

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