Northbridge is an Intel chipset that communicates with the computer processor and controls interaction with memory, the Peripheral Component Interconnect (PCI) bus, Level 2 cache, and all Accelerated Graphics Port (AGP) activities. Northbridge
communicates with the processor using the frontside bus (FSB). Northbridge is
one part of a two-part chipset called Northbridge/Southbridge. Southbridge
handles the input/output (I/O) functions of the chipset.
The Intel Hub Architecture (IHA) has replaced the
Northbridge/Southbridge chipset. The IHA chipset also has two parts: the
Graphics and AGP Memory Controller Hub (GMCH) and the I/O Controller Hub (ICH).
The IHA architecture is used in Intel's 800 series chipsets, which is the
first chipset architecture to move away from the Northbridge/Southbridge design.
Contributor(s): Jason Rush
This was last updated in September 2005
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