In order to understand the Nortbridge you have to understand part of it used to be be the Memory Controller Chip (MCC) used to retrieve memory from RAM for the CPU. The MCC was upgraded to not only provide an interconnection between the CPU and RAM but also to be the interconnection between the CPU and other devices on the PC and was renamed the Northbridge. The Northbridge only deals with high-speed interfaces such as the connection to your video and RAM. The Southbridge works mainly with lower-speed devices such as the USB controller and the hard drive controllers. The Northbridge and the Southbridge architecture is called a ChipSet..
For most motherboards the Northbridge controls the AGP, or PCIe, slot(both common video/graphic card styles) along with all the RAM slots.
cache memory
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The informations flows within a computer from the hard disk to the Southbridge chip(drive controller) on the motherboard then it goes to the Northbridge Chip (system memory controller) then it goes to the DRAM Chips (on the memory stick) then it goes to the CPU Chip Level 2 Cache Buffer SRAM then it goes to the CPU Chip Level 1 Primary Execution Cache Buffer SRAM Memory then it goes to the CPU Chip Execution Units for Processing and gets sent back to the Northbridge which either sends it back to the RAM to be stored for later use or through the AGP Slot (Accelerated Graphics Port) into the VRAM, then on to the GPU (graphics controller), then on to the RAMDAC which converts it to a signal which can be interpreted by your display. Schusterjo
it's a motherboard sound chip.
The BIOS chip is located on the motherboard
The computer chip
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The northbridge chip. The northbridge connects to the CPU through the front-side bus (FSB) and connects to the RAM through the memory bus.
NorthBridge
Northbridge
Its is the button battery that stores the BIOS settings for your computer.
There is no chip it is controlled by the ECU.
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The southbridge is a chip that connects thenorthbridge to other components inside the computer, including hard drives, network connections,USB and Firewire devices, the system clock, and standard PCI cards. The southbridge sends and receives data from the CPU through the northbridge chip, which is connected directly to the computer'sprocessor.
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The memory controller hub in a PC -- often called the northbridge -- is one of two chips in the core logic chipset on a PC motherboard; the other chip in the set is usually called the southbridge. The northbridge typically handles communications among the CPU, the RAM, the BIOS ROM, the PCI-E (or AGP) video adapter, and the southbridge chip.
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The north and south bridge refer to the data channels to the CPU. The memory goes to CPU using the north bridge. And the mouse, keyboard, CD ROM, HDD, ext data flows to the CPU using the southbridge. The northbridge is the portion of the chipset HUB that connects faster I/O buses (for example, an AGP bus) to the system bus. Northbridge chip tends to be larger than the southbridge chip. The southbridge is the HUB that connects to slower I/O buses (for example, an ISA bus) to the system bus. The Northbridge and the Southbridge are known as the chipset on the motherboard. These set of chips collectively control the memory cache, external bus, and some peripherals. There is a fast end of the hub, and there is a slow end of the hub. The fast end of the hub is the Northbridge, containing the graphics and memory controller connecting to the system bus. The slower end of the hub is the Southbridge, containing the I/O controller hub.