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Parts of a CPU

2. An actual CPU

From the outside, the CPU looks like a single chip with lots of pins.

the physical appearance of a CPU chip

In a desk top computer, it is normally located on the 'motherboard'. This is a large printed circuit board where many of the main components of the computer are located. The photo below shows a motherboard with the CPU located beneath its large cooling fan.

the CPU chip is located on the motherboard, beneath a cooling fan