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The Northbridge coordinate the comunication and is the main interface between CPU, Graphical Interface Card and the Memory (RAM). Those need more speed and are the most used components in the computer. The Southbridge coordinate and is the interface between Storage units, USB ports, expansion cards (not PCI express), and other devices on computer. Those need less speed on data tranmission. The comunication between northbridge and southbridge is coordinate by the northbridge.

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13y ago
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13y ago

On new Computers Arquitechture the Northbridge is not an important element in the motherboard and It's job was replaced by giving more functions to the CPU and creating new kinds of BUS (on AMD chipsets by the HyperTransport Bus and on Intel chipsets by the QuickPath Bus). The Southbridge work as interface controller between storages devices (CD, DVD, HD), USB, and others (like Keyboard, Mouse on indirect manner), but the new PCI express and AGP cards are outside of Southbridge control.

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14y ago

The Northern Bridge transfers data between the processor and internal hardware, like RAM, while the South Bridge transfers data between the CPU and external devices, like the CD, DVD, USB, and Floppy disk drives.

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12y ago

northbridge-tranferes data to processor and internal hardware like RAM. while suoth bridge - tranferes data between CPU and external devices.

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Q: Why is the north bridge faster than the south bridge?
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