GPU VRM Decoupling: What a 600 A Load Step Does to the Rail
A GPU sitting idle draws a fraction of what it draws one clock later. On a Blackwell-class accelerator running at roughly 1000 W, the core rail sits near 0.85 to 0.9 V while the current swings across several hundred amperes as tensor cores spin up. The regulator cannot follow that edge. It is far from the [...]