A semiconductor package provides an IC chip on at least one package substrate and including signal bond pads, ground bond pads and power bond pads. The package substrate includes signal contact pads, ground contact pads and power contact pads which are respectively coupled to signal bond pads, ground bond pads and power bond pads formed on the IC chip. The contact pads are coupled to the associated bond pads by a bonding wire. The bonding wires that connect the power and ground pads have a thickness that is greater than the thickness of the bonding wires that couple the signal pads. The various bond pads on the IC chip may be staggered to provide for enhanced compactness and integration. The package substrates may be a plurality of stacked package substrates.