Can NousResearch Hermes 4 14B run on RX 7900 XT 20GB?

YES — Runs Great

C54Usable

Estimated from fit model

NousResearch Hermes 4 14B needs ~13.1 GB VRAM. RX 7900 XT 20GB has 20.0 GB. With Q4_K_M quantization, expect ~56 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) — 13.1 GB, 56.2 tok/s, Runs well

13.1 GB required20.0 GB available

66% VRAM used

Fit status

Runs well

Decode

56.2 tok/s

TTFT

3444 ms

Safe context

83K

Memory

13.1 GB / 20.0 GB

Memory breakdown

Weights8.5 GB

KV Cache1.6 GB

Runtime0.9 GB

Headroom2.0 GB

See how fast it feels

See how fast it feelsNousResearch Hermes 4 14B 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: 56.2 tok/s decode · 3.4s TTFT (warm) · 141 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	56.2 tok/s	1879 ms	83K
Coding	C	Runs well	56.2 tok/s	3444 ms	83K
Agentic Coding	B	Runs well	56.2 tok/s	5010 ms	83K
Reasoning	C	Runs well	56.2 tok/s	4071 ms	83K
RAG	B	Runs well	56.2 tok/s	6263 ms	83K

Quantization options

How NousResearch Hermes 4 14B (14B params) fits at each quantization level on RX 7900 XT 20GB (20.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	5.5 GB	Low	C47
Q3_K_S	3	6.9 GB	Low	C48
NVFP4	4

Get started

Copy-paste commands to run NousResearch Hermes 4 14B on your machine.

Run

lms load hf-bartowski--nousresearch-hermes-4-14b-gguf && lms server start

Frequently asked questions

Can RX 7900 XT 20GB run NousResearch Hermes 4 14B?

Yes, RX 7900 XT 20GB can run NousResearch Hermes 4 14B with a C grade (Runs well). Expected decode speed: 56.2 tok/s.

How much VRAM does NousResearch Hermes 4 14B need?

NousResearch Hermes 4 14B (14B parameters) requires approximately 13.1 GB of memory with Q4_K_M quantization.

What is the best quantization for NousResearch Hermes 4 14B?

The recommended quantization for NousResearch Hermes 4 14B is Q4_K_M, which balances quality and memory efficiency.

What speed will NousResearch Hermes 4 14B run at on RX 7900 XT 20GB?

On RX 7900 XT 20GB, NousResearch Hermes 4 14B achieves approximately 56.2 tokens per second decode speed with a time-to-first-token of 3444ms using Q4_K_M quantization.

Can RX 7900 XT 20GB run NousResearch Hermes 4 14B for coding?

For coding workloads, NousResearch Hermes 4 14B on RX 7900 XT 20GB receives a C grade with 56.2 tok/s and 83K context.

What context window can NousResearch Hermes 4 14B use on RX 7900 XT 20GB?

On RX 7900 XT 20GB, NousResearch Hermes 4 14B can safely use up to 83K 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 NousResearch Hermes 4 14B

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