Three ways 3D chip tech Is upending computing AMD, Graphcore, and Intel show why the industry’s leading edge is going vertical

"higher-than-normal voltage (1.8 volts)... current would be low enough to simplify the package... reduce the voltage to something closer to 0.7 V for use on the compute tiles, and each compute tile had to have its own power domain... coaxial magnetic integrated inductors. Because these are built into the package substrate, the circuit actually snakes back and forth between the base tile and the package before supplying the voltage to the compute tile"