The present disclosure provides an apparatus comprising a package assembly that includes a first base chiplet, a first logic chiplet stacked on the first base chiplet, a first interconnect structure to couple the cluster of compute units to the first interconnect fabric, a second base chiplet coupled to the first base chiplet by a second interconnect structure, a second logic chiplet stacked on the second base chiplet, and a third interconnect structure to couple the second logic chiplet to the second interconnect fabric. In the provided apparatus, the first logic chiplet is manufactured using a different process technology than that used to manufacture the first and second base chiplets.