- Replacing a CPU is usually a simple task.
- It is important to consider the limitations and potential of an upgrade before deciding to replace a CPU.
The following points summarize the key concepts in this tutorial.
- The CPU (central processing unit)-a microprocessor-is the centerpiece of today's computers.
- Clock speed is only one determining factor in identifying overall performance of a processor.
- Processors are generally defined by their speed, the size of the external data bus, and the size of the address bus.
- The development of the 80286 processor introduced the concepts of real and protected modes and allowed the use of up to 16 MB of memory.
- The development of the 80386 processor brought about 32-bit processing and allowed up to 4 GB of memory.
- The 80486 processor is a souped-up version of the 80386 and introduced the use of cache memory.
- The Pentium chip began a new line of processors and technology, incorporating RISC and true multithreading capabilities in an Intel microprocessor for the first time.
- The Intel Pentium III further extended PC performance with advanced cache technology and streamlined code handling.
- Today's standard processor is the Pentium III, with processor speeds of 500 MHz and greater.
Replacing and Upgrading Chips
- It is important for a computer technician to know the technological advances made by each successive generation of computers.
- Simply upgrading the CPU can often lengthen the lifespan of a computer.
- What is the language of the computer?
- What is an external data bus?
- Describe an integrated circuit (IC).
- Define a clock cycle.
- What are the advantages of a Pentium processor over a 486?
- What is the difference between "SX" and "DX" in a 386 chip?
- Which kind of a computer uses the Motorola 68040 chip?
- Define "microprocessor."
- In computer code language _____________ means on and ____________ means off.
- Define clock speed.
- What is the function of the address bus?
- Microprocessor chips (CPUs) are manufactured in a variety of sizes and shapes. Name as many different kinds as possible.
- Name the basic types of CPU sockets and give a brief description of each.
- If a customer brought you an old Pentium 60 and asked you to install a new processor, what would your advice be? Why?