A microelectronic package can include a substrate having first and second opposed surfaces, first, second, third, and fourth microelectronic elements, and a plurality of terminals exposed at the second surface. Each microelectronic element can have a front surface facing the first surface of the substrate and a plurality of contacts at the front surface. The front surfaces of the microelectronic elements can be arranged in a single plane parallel to the first surface. Each microelectronic element can have a column of contacts exposed at the front surface and arranged along respective first, second, third, and fourth axes. The first and third axes can be parallel to one another. The second and fourth axes can be transverse to the first and third axes. The microelectronic package can also include electrical connections extending from at least some of the contacts of each microelectronic element to at least some of the terminals.