The invention provides a high-speed
serial computer expansion
bus standard backboard which is characterized in that multiple
layers of circuit boards are arranged, a plurality of through
silicon vias are formed in the multiple
layers of circuit boards, the multiple
layers of circuit boards are vertically and electrically connected through the through
silicon vias to form a three-dimensional topological structure, and the three-dimensional topological structure comprises a first circuit board layer, a second circuit board layer and a third circuit board layer; the first circuit board layer is provided with a plurality of
expansion card slots, the second circuit board layer is used for transmitting and
processing serial signals, the third circuit board layer is used for providing a power supply, the multi-layer circuit board is further provided with a
chip stacking module and a
chip mounting part which are electrically connected with the multi-layer circuit board, and the
chip mounting part is used for mounting the
chip stacking module. According to the multi-layer circuit board, vertical electric connection of all the circuit board layers of the multi-layer circuit board is achieved through the
silicon through holes, the transmission path of serial signals is greatly shortened,
delay and attenuation of the serial signals are reduced, and stable and high-speed circulation of the high-speed serial signals is powerfully guaranteed.