[computing] A northbridge or host bridge is a microchip on some PC motherboards and is connected directly to the CPU (unlike the southbridge) and thus responsible for tasks that require the highest performance. The northbridge is usually paired with a southbridge, also known as I/O controller hub. In systems where they are included, these t...
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http://en.wikipedia.org/wiki/Northbridge_(computing)

Northbridge is a chipset component that communicates with the computer processor and controls interaction with memory, the Peripheral Component Interconnect (PCI) bus, 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.
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http://www.encyclo.co.uk/local/20505

a town in S Massachusetts. 12,246.
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https://www.infoplease.com/dictionary/northbridge
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