Why North and South Bridges ?
Every student who goes through the IT infrastructure study will surly go though the theory of North and South bridge chips on the motherboard . ever thought why theMemory Controller Hub and IO controller hub are named so ?
The two chips are aptly called the bridge because it acts as a bridge between your microprocessor and other components on your motherboard. The faster Components are like memory and display are connected to the North bridge ( also called Memory controller Hub or MCH )and slower components are connected to South bridge( IO controller ) as shown below
But our point of discussion is why the north bridge is called so ?. The reason behind the name is simple . If you just think the above image as a good old map and place a compass on top of it , you know that the north will be on the top . So the first and faster MCH is called north bridge because that bridge is on top of the map just below the CPU and the south bridge is on the bottom of the map .