70B
Running 70B Models Locally — Exact VRAM by Quantization
Llama 3.3 70B needs 43GB at Q4, 75GB at Q8, 141GB at FP16. Every quant level, which GPUs fit, real speeds, and when a 27B or MoE model is the smarter buy.
What Can You Actually Run on 24GB VRAM?
Qwen 3.5 27B at Q4 fits in 17GB with 64K+ context. 70B at Q3 with limited context. Flux at full FP16. RTX 3090 at $1,200 vs 4090 at $2,250—every model that fits and which GPU to buy.