An assembly structure includes a core-computing section and a sub-computing section. The core-computing section has a first surface and a second surface opposite to the first surface. The core-computing section includes at least one conductive via electrically connecting the first surface and the second surface. The sub-computing section has a first surface stacked on the first surface of the core-computing section and a second surface opposite to the first surface. The sub-computing section includes at least one conductive via electrically connecting the first surface and the second surface. The assembly structure includes a first signal transmission path and a second signal transmission path. The first signal transmission path is between the at least one conductive via of the sub-computing section and the at least one conductive via of the core-computing section. The second signal transmission path is between the second surface of the sub-computing section and the at least one conductive via of the sub-computing section.