Cpu presentation

COMPUTER PART: CPU

By: Mudit K. J., Harpreet, Perry, Karan

WHAT IS CPU? CPU stands for Central Processing Unit

Central Processing Unit is like the brain of the Computer

FUNCTION & HISTORY The CPU is one of the main portions of the

computer, that carries out instructions to the computer program

CPU performs arithmetical, logical and input/output operations

The designs of the CPU may have changed, but they all perform the same operations

The First CPU was made in the 1940s and was ran with the first computer the EDVAC (Electronic Discrete Variable Automatic Computer).

The EDVAC was one of the first functional Electronic Computers

BASIC INFO The CPU will have

LGA – Land Grid Array - Used to connect to Sockets

- The sockets will have a model number that is used for that certain processor

775 socket is used in the Pentium 4 processor

BASIC INFO CONT. PGA – Pin Grid Array - Was used in previous models of

the processor

TAKING A LOOK AT THE CPU

This is a Old CPUModel I486 DX2

Pin Grid Array

This is the CPU model we will be showing

Pentium 4 Processor

Land Grid Array

UNINSTALLING THE PROCESSOR

STEP 1 Unplug all electrical connections This includes the electrical power to the

motherboard processor and the fan cable

Put in the Anti-Static Wrist Strap to a non-painted area/metal

STEP 2 There are four fasteners connected from

the cooling assembly to the motherboard Gently rotate 90 degrees to the direction

indicated on top of the fastener Never do a counter-clockwise rotation When a fastener is released, alignment line

on top will be parallel to the cooling assembly

You will need to use a flat-tip screwdriver to rotate the fastener caps

Do not let the screwdriver tip slip off the fasteners

STEP 3 Pull the fasteners gently upward, but

you should here a snap from each fastener on the motherboard

Place the plastic protection covers over the bottom of the cooling assembly to protect the fastener tips

Disengage locking lever tab while holding the load plate in position

Slowly release load plate while you move the load lever into full open position

STEP 4 Remove Processor using a straight up

vertical direction Do not tilt or slide the processor Close the processor load plate, lock the

lever and replace socket protective cover

Excess Thermal material can be removed with a soft lint-free cloth

INSTALLING THE PROCESSOR

TOOLS NEEDED TO REMOVE A CPU

Core Processor Heat Sink Fan Assembly Compressed Air to remove debris or Foreign objectsAnti – Static Wrist Strap

Look at the pictures What Do you see

There is a lever to open the CPU, and Protective cover

Levers are only in the new motherboards

STEP 1 Use Compressed Air to remove Debris or

foreign objects

Never use your finger, cloth or brush to remove debris

This damages the pins

STEP 2

Remove the processor from its protective cover

Handle the processor by the edges Never touch the bottom of the processor Carefully remove processor from its

protective cover Inspect it for damage

STEP 3There is one way for a processor to be

inserted back into its socket

A processor has many pins, but there is only ONE pin

This pin is known as Pin #1, this is where you put the processor in its place

STEP 4 Place the processor over the socket

keys, look for a socket that is different to other sockets

Do NOT drag the processor across or place it the wrong way

This Pin must correspond to the socket

STEP 5 After inserting the processor Lower it to the load lever and secure it

under the locking tab Should look like this

STEP 6 Install the Cooling Assembly which has a

heat sink and fan Remove the protective plastic cover

from the bottom of assembly Do not touch the bottom of the

assembly or the thermal compound

Thermal Compound Material

STEP 7 Before installing the cooling assembly

that has a heat sink and fan Apply the thermal compound material

on the processor Put enough compound material so that

it is evenly distributed Use a material like a old card, etc to

evenly distribute it

STEP 7 CONT. Position the fan over the processor The motherboard should have four holes

around the processor The holes are for the cooling assembly

to be placed The cooling assembly will have 4

fasteners Use a pencil’s end (eraser) to push

down the fastener Connect a fan electrical cable to the

motherboard fan connection

VIDEO TUTORIAL ON REMOVAL AND INSTALLATION OF CPU http://www.youtube.com/watch?v=Y2gi0

GTzfTA

FOR BETTER INFO ON THE CPU Visitcomputerpartcpu.wikispaces.com

Website has more Tutorials on removal and installation of CPUs on other versions of the computer hardware models

REFERENCESComputer Manuals Pgs 205 to 218

Tutorial videos mostly from Youtube