A testing system includes a load board that includes a first circuit board, a first external connector attached to the first circuit board, and a thermal module configured to hold a system-on-wafer structure including a connector and a socket, a connector structure including a second circuit board, wherein the second circuit board is electrically connected to the first external connector, and a second external connector configured to connect to the connector of the system-on-wafer structure, and a test structure configured to connect to the socket of the system-on-wafer structure, the test structure including a third circuit board and pins, wherein adjacent pairs of pins of the test structure are electrically coupled through the third circuit board to form a continuous conductive path extending alternately between the system-on-wafer structure and the adjacent pairs of pins of the test structure.