Techniques are provided for fine node heterogeneous-chip packages. In an example, a method of making a heterogeneous-chip package can include coupling electrical terminals of a first side of a first base die to electrical terminals of a first side of a second base die using a silicon bridge, forming an organic substrate about the silicon bridge and adjacent the first sides of the first and second base dies, and coupling a fine node die to a second side of at least one of the first base die or the second base die.