An assembly includes a chip including an integrated circuit, a casing including an integrated circuit including plural active elements and including an upper portion formed on a side of the chip, a lower portion formed on another side of the chip, and a cooling inlet and a cooling outlet for transferring a coolant, provided in an upper surface of the casing, and forming outer sidewalls of the upper portion and inner sidewalls of the lower portion, plural through-wafer vias (TWVs) for electrically connecting the integrated circuit of the chip and the integrated circuit of the casing, and a card connected to the casing for electrically connecting the casing to a system board.