# Ornith 1.5 35B-A3B: RAM and VRAM requirements

> Ornith 1.5 35B-A3B is a 35B Ornith model (Mixture-of-Experts, 3B active per token). At Q4_K_M it needs about **22.4 GB** to run and fits **12 of 43** tracked devices. Minimum to run: Nvidia GeForce RTX 4090 (24GB).

Last validated: 2026-09-07. Sources: Ollama, HuggingFace GGUF repos, vendor specs.

## Memory by quantization
| Quant | On disk | To run (4k context) |
| --- | --- | --- |
| Q4_K_M | 20.22 GB | ~22.4 GB |
| Q8_0 | 35.21 GB | ~37.4 GB |
| FP16 | 71.97 GB | ~74.2 GB |

Memory = weights + KV cache + ~0.8 GB runtime overhead, and varies ±15% with context length.

## Will it run on my device?
- **Nvidia GeForce RTX 2060 (6GB)** (6 GB): No, not enough memory
- **Generic Android Phone (8GB RAM)** (8 GB): No, not enough memory
- **Samsung Galaxy S24 Ultra** (12 GB): No, not enough memory
- **Nvidia GeForce RTX 4060 Ti (16GB)** (16 GB): No, not enough memory
- **Apple M5 (16GB)** (16 GB): No, not enough memory
- **Nvidia GeForce RTX 4090 (24GB)** (24 GB): Yes, but tight
- **Apple M4 Pro (48GB)** (48 GB): Yes, it runs
- **Apple M3 Ultra (256GB)** (256 GB): Yes, it runs (room for FP16)

Full table of all 43 devices: https://localmodel.run/model/ornith-1.5-35b-a3b

## How to run
Quickest path: `ollama run ornith-1.5:35b`. On Mac, LM Studio (ships MLX) is fastest; on Linux, Ollama for chat or vLLM to serve; on Windows, LM Studio or Ollama.

## Details
- Parameters: 35B (MoE, 3B active per token)
- Default context: 256k tokens
- License: MIT (commercial use: yes)
- Released: 2026-08
- HuggingFace: 291,053 downloads/mo, 559 likes

## FAQ
### How much VRAM or RAM does Ornith 1.5 35B-A3B need?
About 22.4 GB at Q4_K_M (weights 20.22 GB + KV cache + overhead) at a 4k context. Budget ~37.4 GB for Q8_0.
### Can Ornith 1.5 35B-A3B run on a laptop?
Ornith 1.5 35B-A3B is large; you need a high-memory Mac or a 24 GB+ GPU at Q4_K_M.
### Can I use Ornith 1.5 35B-A3B commercially?
Yes, MIT permits commercial use.

Sources: https://huggingface.co/ornith-ai/Ornith-1.5-35B-A3B, https://huggingface.co/ornith-ai/Ornith-1.5-35B-A3B-GGUF, https://ollama.com/library/ornith-1.5/tags
More: https://localmodel.run/model/ornith-1.5-35b-a3b