History of Intel Microprocessors

Here is a list of all the microprocessors from Intel and their brief history.

Intel 4004:

• 1969 
• Clock speed : 108 KHZ
• Number of transistors:2300
• 4-bit register and 4-bit data bus.

The world first microprocessor

Intel 8008:

• 1972 
• Clock speed : 800 KHz 
• Number of transistor:3500
• 8-bit register and 8-bit data bus.

Intel 8080:

• 1974
• Clock speed : 2 MHz
• Number of transistor: 4500
• 8-bit register and data bus.

Intel 8086:

• 1978 
• Clock speed : 4.47 MHz 
• Number of transistors: 29000
• 16-bit register and data bus.

Intel 8088:

• 1981 
• Clock speed : 4.47 MHz
• Number of transistors: 29000
• 16-bit register and data bus.

The worlds first PC ran on an Intel 8088 microprocessor

Intel 286:

• 1982 
• Clock speed: 12 MHz
• Number of transistor: 134000
• 16-bit register and data bus.

Intel 386:

• 1985 
• Clock speed: 16 MHz
• Number of transistors: 275000
• 32-bit register and data bus.

Intel 486:

1989

Clock speed: 25 MHz

Number of transistor: 1,200,000

32-bit register and data bus.

Intel Pentium:

• 1993
• Clock speed: 66 MHz
• Number of transistor:3,300,000
• 32-bit register and data bus.

Intel Pentium Pro:

• 1995
• Clock speed: 200 MHz
• Number of transistor:5,500,000
• 32-bit register and data bus.

Intel Pentium II:

• 1997
• Clock speed: 300 MHz
• Number of transistor: 7,500,000
• 32-bit register and data bus.

Intel Pentium III:

• 1999
• Clock speed: 500 MHz
• Number of transistor:9,500,000
• 32-bit register and data bus.

Intel Pentium 4:

• 2000
• Clock speed: 1 GHz
• Number of transistor: 15,500,000
• 64-bit register and data bus.

Intel Pentium D:

• 2005
• Clock speed: 3.6 GHz
• Number of transistor: 47,500,000
• 32-bit register and data bus.

Intel Core 2/Quad:

• 2006/2007
• Clock speed: 3.6 GHz
• Number of transistor: 214,500,000
• 32-bit register and data bus.