Lexikon's History of Computing

* * * Microprocessor Chips: Intel * * *

Examples of some of Intel Corporation's microprocessor chips.
For more specific information, contact Intel Corp.

 

MICROPROCESSOR

YEAR

SPEED

WORD LENGTH

TRANSISTORS

MIPS

Intel 4004

1969

108 KHz

4-bit

2,300

.06

Intel 8008

1972

200 KHz

8-bit

3,500

.06

Intel 8080

1974

2 MHz

8-bit

6,000

.64

Intel 8086

1978

4.47 MHz

16-bit

29,000

.66

Intel 8088

1981

4.47 MHz

16-bit

29,000

.75

Intel 80286

1982

12 MHz

16-bit

134,000

2.66

Intel 80386

1985

16-33 MHz

32-bit

275,000

4

Intel 80486 (i486)

1989

20-100 MHz

32-bit

1.2 Million

70

Intel 80586 (Pentium)

1993

75-200 MHz

32-bit

3.3 Million

126 - 203

Intel Pentium Pro

1995

150-200 MHz

32-bit

5.5 Million

300

Intel Pentium MMX

1997

166-233 MHz

32-bit

4.5 Million

-

Intel Pentium II

1997

233-450 MHz

32-bit

7.5 Million

-

Intel Pentium III

1999

450-933 MHz

32-bit

Over 9.5 Million

-

Intel Itanium Processor
(formerly Merced Processor)

2000

1 GHz

64-bit

15,000,000

1,200

Pentium, Pentium Pro, MMX, Itanium, Merced are all copyrighted by Intel Corporation

Computer Processing Speed

Computer processing speed depends on a variety of factors. Three of the most important factors are:

Word length (the number of bits that can be processed at one time by the microprocessor)

Cycle Speed (how fast individual events are processed, measured in Megahertz)

Data Bus Width (determines how much data can be transferred between the CPU and memory)

Other factors Include:

RAM (amount of available random access memory)

Disk Access Speed (speed that data can be read from hard disk)

Code Efficiency (how efficiently the computer code has been designed)

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