📍 Part of the Local LLMs in 2026 guide
Llama 3.1 70B needs 40 GB VRAM at Q4. The RTX 4090 24GB has 24 GB.
● Llama 3.1 70B (Meta) is a 70B parameter model used for Near-GPT-4 quality for complex tasks. Frontier-class open model, best for demanding use cases.
VRAM Requirements
| Quantization | VRAM Needed | RTX 4090 24GB |
|---|---|---|
| Q4_K_M (recommended) | 40 GB | ❌ |
| Q8_0 (high quality) | 72 GB | ❌ |
Why It Won’t Fit
Llama 3.1 70B needs 40 GB VRAM at Q4 quantization, but the RTX 4090 24GB only has 24 GB. You’re 16 GB short.
Options: You can run it with CPU offloading (expect ~10 tok/s — very slow), or upgrade to a GPU with 40+ GB VRAM.
About the RTX 4090 24GB
Pros: Fastest consumer GPU, excellent for real-time inference
Cons: Expensive, still only 24GB limits 70B models
Price: ~$1,800 — Check current price on Amazon →