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How to install a computer processor
Determine which cpu is in your computer either by reading the start-up screen or using diagnostic software.
You may also determine your cpu type and speed by removing the system unit cover and taking a good long look at the chip. Look at the label on the chip to determine its model, speed, and the manufacturer.
Note: if a heat sink or a fan is installed on top of the chip, you will have to remove these components to view the cpu label. Turn off and unplug the system unit.