FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -Northbridge-Controls high speed access to the RAM and video card. It also controls the speed at which the CPU communicates with all of the other components in the computer. Video capability is sometimes integrated into the Northbridge.

Detailed explanation-2: -The northbridge typically handles communications among the CPU, in some cases RAM, and PCI Express (or AGP) video cards, and the southbridge. Some northbridges also contain integrated video controllers, also known as a Graphics and Memory Controller Hub (GMCH) in Intel systems.

Detailed explanation-3: -Processor cache is a bank of super-fast storage on the CPU. It essentially acts as a bridge between the system RAM (aka DRAM) and the processor, acting as system RAM when capacity allows and reducing the time it takes to access that system RAM when it doesn’t.

Detailed explanation-4: -The peripheral component interconnect (PCI) bus connects the northbridge-and hence the CPU and RAM also-to two things: 1) the southbridge chip, and 2) a collection of important and bandwidth-intensive add-on devices like the video card, network card, soundcard, etc.

Detailed explanation-5: -The SouthBridge (also called the input/output controller or expansion controller) handles communications between slower peripheral devices. It is also called the ICH (I/O Controller Hub). The term “bridge” is generally used to designate a component which connects two buses.