A multi-chip package comprising: an interconnection substrate comprising an interconnection bridge embedded in the interconnection substrate, and an interconnection scheme comprising a first interconnection metal layer, a second interconnection metal layer over the first interconnection layer and the interconnection bridge, and a polymer layer between the first and second interconnection metal layers, wherein the interconnection bridge is embedded in the interconnection scheme and has sidewalls surrounded by the polymer layer; a semiconductor IC chip over the interconnection substrate and across over an edge of the interconnection bridge; a memory chip over the interconnection substrate and across over an edge of the interconnection bridge, wherein the interconnection bridge comprises a plurality of metal interconnects configured for a data bus coupling the semiconductor IC chip to the memory chip, wherein a bitwidth of the data bus between the semiconductor IC chip and the memory chip is greater than or equal to 512.