AMD Explains X3D Cache Stacking Benefits

Published Mar 7, 2026, the article explains AMD’s X3D (3D V-Cache) technology, which stacks additional L3 cache onto CPU compute dies using TSVs and hybrid bonding to boost gaming performance without adding cores or much higher clocks. It details implementation differences across Zen 3/4/9 generations, notes recent designs relocating cache under compute dies, and highlights trade-offs between larger cache and reduced boost clocks.