EXPANSION SLOTS IN MOTHERBOARD

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EXPANSION SLOTS IN MOTHERBOARD  Friends today i am going to share my knowledge and understanding of the expansion slots. So lets begin with our topic. Expansion slots are used to provide additional properties for carrying the computation task such as additional video, audio and sound, advanced graphics and Ethernet.   So lets begin with our knowledge hunting. I will start by AGP expansion slots. AGP AGP stands for ACCELARATED GRAPHICS PORT.  AGP was introduced with high speed 3D graphics display in 1996.  It is used for older graphics card types which is discontinued by PCI EX16 graphics port in 2005.   These were kernel version of AGP most of the brand in 1.5 volt DC.  AGP 1x channel and 66MHZ clock speed resulting a data table of 266 MBPS.   AGP 2x, 4x ,8x specification multiply MHZ clock to produce increase throughput. AGP 8x produces effective clock frequency of 533 MHZ resulting a throughput of 2 GBPS (2133MHZ) resulting a throughput of over a 32 bit channel. PCI PCI  stands for P

CHIPSETS OF COMPUTERS.


A CHIPSET IS A COLLECTION OF CHIP OR CIRCUITS THAT PERFORM INTERFACE AND PERIPHERAL FUNCTION FOR THE PROCESSOR.  THIS COLLECTION OF CHIPS IS USUALLY THE CIRCUITS THAT PROVIDES INTERFACES FOR MEMORY EXPANSION CARDS AND ONBOARD PERIPHERALS AND GENERALLY DICTATES HOW A MOTHERBOARD WILL COMMUNICATE WITH THE INSTALLED PERIPHERALS.
CHIPSET ARE USUALLY GIVEN A NAME AND MODEL NUMBER BY THE ORIGINAL MANUFACTURER AND MODEL ALSO TELL YOU THAT YOUR PARTICULAR CHIPSET HAVE A CERTAIN SET OF FEATURES EG TYPE OF RAM SUPPORTED TYPE AND BRAND OF ONBOARD AND SO ON.

CHIPSETS CAN BE MADE UP ONE OR MORE INTEGRATED CIRCUIT CHIPS.  INTEL BASED MOTHER BOARDS TYPICALLY USE TWO CHIPS.  THE FUNCTION OF CHIPSETS CAN BE DIVIDED INTO TWO MAJOR FUNCTIONAL GROUPS CALLED NORTH BRIDGE AND SOUTH BRIDGE.

NOW I AM GOING TO SHOW YOU SOME OF THE BASIC CHIPSET IN COMPUTERS AND WIDELY USED CHIPSETS USED IN MODERN COMPUTERS .  THEIR NAMES AS 1) NORTH BRIDGE 2) SOUTH BRIDGE

SO LET US BEGIN IN OUR LITTLE JOURNEY.

NORTH BRIDGE

THE NORTH BRIDGE SUBSETS OF MOTHERBOARD CHIPSET, IS THE SET OF CIRCUITS OR CHIPS THAT PERFORM ONE VERY IMPORTANT FUNCTION: MANAGEMENT OF HIGH SPEED PERIPHERAL COMMUNICATIONS.

  THE NORTH BRIDGE IS RESPONSIBLE PRIMARILY FOR COMMUNICATIONS WITH INTEGRATED VIDEO USING AGP AND PCIE AND PROCESSOR TO MEMORY COMMUNICATIONS.  THEREFORE IT CAN BE SAID THAT MUCH OF THE TRRUE PERFORMANCE OF A PC RELIES ON THE SPECIFICATION OF THE NORTH BRIDGE COMPONENT AND ITS COMMUNICATION CAPABILITY WITH THE PERIPHERALS IT CONTROLS.

THE COMMUNICATIONS BETWEEN THE CPU AND MEMORY OCCUR OVER THE FRONT SIDE BUS(FSB). WHICH IS JUST A SET OF SIGNAL PATHWAYS CONNECTING THE CPU AND THE SYSTEM MEMORY .  THE CLOCK SIGNAL THAT DRIVES HE FSB IS USED TO DRIVE COMMUNICATION BY CERTAIN OTHER DEVICES, SUCH AS AGP AND PCIE SLOTS.

THE NORTH BRIDGE IS DIRECTLY CONNECTED TO THE SOUTH BRIDGE.  IT CONTROLS THE SOUTH BRIDGE AND HELPS TO MANAGE THE COMMUNICATION BETWEEN THE SWOUTH BRIDGE AND THE REST OF THE COMPUTER.

SOUTH BRIDGE

THE SOUTH BRIDGE IS SUBSET OF THE CHIPSET IS RESPONISIBLE FOR PROVIDING SUPPORT TO THE ONBOARDS SLOWER PERIPHERALS SUCH AS PS2, PARALLEL PORTS, SERIAL PORTS, PATA, SATA ETC. MANAGING THE COMMUNICATION WITH THE REST OF THE COPUTER AND THE RESOURCS GIVEN TO THEM.

THESE COMPONENTS DO NOT NEED KEEP UP WITH THE EXTERNAL CLOCK OF THE CPU AND DO NOT REPRESENTS A BOTTLENECK IN THE OVER ALL PERFORMANCE .  THE SOUTH BRIDGE IS ALSO RESPONSIBLE FOR MANAGING COMMUNICATIONS WITH THE SLOWER EXPANSION BUSES LIKE PCI SLOT ETC.

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