128 GB VRAM · Offloading Amazon
M4 Ultra
Pros
- Works via CPU offloading
- 128 GB VRAM — adequate headroom
Local Engine Ready
Hermes 3 405B
Hermes 3 405B works with 2 GPUs via CPU offloading. Precise VRAM thresholds and benchmarks below.
0 Compatible GPUs
2 with offloading
405B params
131K context
Top pick
M4 Ultra · 128 GB VRAM with offloading
Prices and availability may change · affiliate link
Javier Morales AI hardware specialist — 8 years of experience
GitHub: github.com/javier-morales-ia
llama.cpp 0.2.x · CUDA 12 · ROCm 6 · updated monthly · methodology →
Execution Context
ARCHITECTURE TRANSFORMER
CONTEXT 131K TOKENS
QUANTIZATION 4-BIT GGUF
PROVIDER Nous Research
LICENSE llama-3.1-community
VRAM REQUIREMENT
230 GB
4GB 8GB 12GB 16GB 24GB+
Hardware Decision
This model requires aFlagship GPU (48 GB+ VRAM)
Compatible GPUs for Hermes 3 405B
Best picks by compatibility, VRAM headroom, and value — prices and availability may change.
192 GB VRAM · Offloading Amazon
M3 Ultra
Pros
- Works via CPU offloading
- 192 GB VRAM — adequate headroom
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Check if your GPU can run Hermes 3 405B →
VRAM Calculator — instant compatibility check
M4 Ultra
128 GB · Works with offloading · Check availability
*Prices and availability may change. Some links are affiliate links.
System Requirements
GPU VRAM 230 GB High-end GPU
System RAM 345 GB
64 GB or more
Storage 230 GB Q4 · SSD recommended
CPU Any modern CPU GPU required
VRAM by Quantization
| Quantization | VRAM needed | Disk space | Quality |
|---|---|---|---|
| FP16 (max quality) | 810 GB | 810 GB | Maximum |
| Q8 (high quality) | 405 GB | 405 GB | Near-lossless |
| Q4 (recommended) Best balance | 230 GB | 230 GB | Recommended |
| Q2 (minimum) | 115 GB | 115 GB | Quality loss |
Model Details
| Developer | Nous Research |
| Parameters | 405B |
| Context window | 131,072 tokens |
| License | llama-3.1-community |
| Use cases | agent, function-calling, reasoning, chat |
| Released | 2024-09 |
Install with Ollama
ollama run hermes3:405b Hugging Face
NousResearch/Hermes-3-Llama-3.1-405B Technical Requirements
Can your GPU run Hermes 3 405B?
Hermes 3 405B needs <strong class="text-amber-400">230 GB VRAM</strong> at Q4 — no consumer GPU fits fully. 2 GPUs work with CPU offloading at Q2 (115 GB).
115GB Critical min
230GB Optimal Q4
405GB High Quality Q8
810GB Max FP16
Hardware Performance Matrix
0 Q4 native · 2 offload
| GPU Unit | VRAM | Compatibility | Est. Speed | Action |
|---|---|---|---|---|
| M4 Ultra | 128GB | Offload | 45 tok/s | Calculate → |
| M3 Ultra | 192GB | Offload | 38 tok/s | Calculate → |
Recommended GPUs for Hermes 3 405B
Real Benchmarks
No Paid Reviews
Editorial Pick
Data-driven
Best picks by compatibility, VRAM headroom, and value — prices and availability may change.
M4 Ultra
128 GB VRAM
Offloading
Check availability →
M3 Ultra
192 GB VRAM
Offloading
Check availability →
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Hermes 3 405B — Compatibility guide
Hermes 3 405B with 405B parameters only runs fully in multi-GPU or server configurations. Consider distilled versions if available. The VRAM calculator can help you find compatible alternatives.
Compatible Hardware
GPUs that run Hermes 3 405B at Q4 — sorted by AI performance score.
Real Benchmarks
No Paid Reviews
Data-driven
No consumer GPUs have enough VRAM for this model.
Consider distilled versions or Q2 quantization.
Some links are Amazon affiliate links. We may earn a commission at no extra cost to you. Amazon cookies may last up to 24 hours after your click.
More Practical Alternatives
Similar models in the agent category with comparable VRAM footprints.
Not sure which GPU you need for Hermes 3 405B?
The VRAM Calculator tells you exactly which quantization your hardware can handle.
M4 Ultra
Check availability
Prices change daily