In Northbridge/Southbridge
chipset architecture designs, the
Northbridge is the chip or chips that connect a
CPU to
memory, the
PCI bus,
Level 2 cache and
AGP activities. The Northbridge chips communicate with the CPU through the
FSB.
The Northbridge chip is one of two chips that control the functions of the chipset. The other is the Southbridge. The Northbridge can consist of more than one discrete chip while the Southbridge is typically only one discrete chip.