LLM Deployment & Inference·SEPTEMBER 22, 2026
Llama 3.3 70B VRAM Calculator
TL;DR Llama 3.3 70B requires 95.5 GB at fp8 and 56.3 GB at int4. A single RTX 4090 (24 GB) cannot run it at any quantization level. The RTX 5090 (32 GB) reaches the int4 minimum only as a dualcard NVLink pair (64 GB combined), hitting 47.7 tokens/sec at 87.9% use. Source: GPUniq…
