The 70B Threshold: How the RTX 5090 Rewrites the Home Lab Equation

What You'll Learn The Quality Gap: Why moving from 8B parameter models to 70B parameter models fundamentally changes the capabilities of local AI, and why the "sweet spot" has finally arrived. Memory Bandwidth Dynamics: How the architectural leap of the RTX 5090 shifts the bottleneck from raw compute to memory subsystems, allowing for sustained high-throughput inference. Software Architecture: The specific role of inference engines like vLLM and PagedAttention in managing the massive memory requ