8085 Introduced 1976 and contained 6,200 transistors.

1976 Zilog - Z80 Introduced 1976 with a speed of 2.5 to 10MHz. (In 1987 Zilog introduced the Z280, a 16bit version of the Z80)

Synertek 6502 - Introduced in 1977 The Apple II was launced using this CPU from Motorola

Motorola MC68000 - Introduced Sept. 1979, used in the Atari ST, Commodore Amiga, Apple Lisa, and later enhanced versions used in the Apple Macintosh. It contained 68,000 transistors.

Intel 8088 - Called the "First Generation" Released in 1978 to 1981, this was the first processor used in the original IBM XT PC

Intel 80186 - Released in 1980, This was a popular chip. Many versions have been developed, but none used in a ordinary PC

Intel 80286 - Code named "P2" Called the "Second generation", first introduced in 1982, and containing 134,000 transistors.

Motorola 68010 - Introduced in 1984, and used in the Apple Macintosh

Motorola 68020 - Introduced in 1984, and used in the Apple Macintosh

68030 - core photo 1987

68040 core photo 1989

Sun Super SPARC - Released in 1987 it is short for Scaleable Processor ARChiture, utilising RISC (Reduced Instruction Set Code) to speed up processing in specialised computing

Sun Ultra Sparc

Intel 80386SX - Introduced in 1987 called the "Third Generation" The SX lacked a math coprocessor

AMD 386DX/DXL - Released in March 1991 at a speed of 40 MHz, the DXL is a low power version of the DX.

Intel 80486DX - Code named "P4" and called the "Fourth Generation" it was released on April 10th 1989 and contained 1.2 million transistors

Intel 80486SX - Code named P45/P23 Introduced after the DX series in April 1991 it is a less expensive version of the 80486DX probably because it failed DX testing

Intel 486DX200 Overdrive

Intel 80486 DX2 - Code named P24/P24S This was first introduced in March 2, 1992. Based on the DX, but with double clock speeds

AMD 486 DX266 The clock doubled version of the Am486DX, running at 66MHz, released April to October 1993.

Intel 80486DX4 - Code named P24C/P24CT, and was first introduced in 1994.

Intel Pentium - Code named "P5", and called the "Fifth Generation" It was introduced on March 22, 1993, and containing 3.1 million transistors with speeds of 60MHz to 266MHz.

AMD 5x86

Cyrix 6x86 - Introduced on Feb 5th 1996, this is a low cost alternative to the Pentium, and contained 3.1 million transistors

Cyrix MII

IDT WinChip C6 - Introduced in May 1997 This was another low-priced Pentium MMX-like CPU, original containing 3.5 million transistors and the 200MHz version containing 5.4 million transistors

AMD K5 - Released in 1996, with 3.1 million transistors, and utilising their own unique process technologys.

Intel Pentium Pro - Code named "P6". Designed for high-end servers and workstations, usually those running Windows NT.

Intel Pentium 2 - Code named "Klamath". Initially the Pentium II 233MHz was released in 1997 and introduced a new physical architecture which encased a circuit board within a plastic case, called "Slot 1"

Intel Pentium !!! (P3)

Initially the 500 MHz was released in 1999 shortly after its release Intel introduced the Pentium III 550 MHz processor.

Intel Pentium 4 - now available at 2.53 GHz, and higher, it is based on Intel NetBurst™ microarchitecture

AMD Duron - 800 MHz & 1000 MHz

IBM Power PC 601 and 602 core photo

Updates & more to come