# Devstral 2 123B: RAM and VRAM requirements

> Devstral 2 123B is a 123B Mistral model. At Q4_K_M it needs about **73.3 GB** to run and fits **4 of 43** tracked devices. Minimum to run: Apple M4 Max (128GB).

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 | 69.75 GB | ~73.3 GB |
| Q8_0 | 123.73 GB | ~127.2 GB |
| FP16 | 250.06 GB | ~253.6 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): No, not enough memory
- **Apple M4 Pro (48GB)** (48 GB): No, not enough memory
- **Apple M3 Ultra (256GB)** (256 GB): Yes, it runs (room for Q8_0)

Full table of all 43 devices: https://localmodel.run/model/devstral-2-123b

## How to run
Quickest path: `ollama run devstral-2:123b`. 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: 123B
- Default context: 256k tokens
- License: Modified MIT (commercial use: conditional)
- Released: 2025-12
- HuggingFace: 18,964 downloads/mo, 338 likes

## FAQ
### How much VRAM or RAM does Devstral 2 123B need?
About 73.3 GB at Q4_K_M (weights 69.75 GB + KV cache + overhead) at a 4k context. Budget ~127.2 GB for Q8_0.
### Can Devstral 2 123B run on a laptop?
Devstral 2 123B is large; you need a high-memory Mac or a 24 GB+ GPU at Q4_K_M.
### Can I use Devstral 2 123B commercially?
Conditionally: Modified MIT: free below a stated revenue threshold, extra terms above it (see the LICENSE file)..

Sources: https://huggingface.co/mistralai/Devstral-2-123B-Instruct-2512, https://huggingface.co/unsloth/Devstral-2-123B-Instruct-2512-GGUF, https://ollama.com/library/devstral-2/tags
More: https://localmodel.run/model/devstral-2-123b