Source : Free On-Line Dictionary of Computing

northbridge
     
         The single {integrated circuit} in a {core
        logic} {chip set} that connects the {CPU} to the {system
        memory} and the {AGP} and {PCI} busses.  Other functions are
        provided by the {southbridge} chip.
     
        {(http://www.maximumpc.com/terminator/terminator_n.html)}.
     
        (2000-01-15)