Classic Models
The models made by Commodore in order of release and categorized by chipset used. All of them use some form of 68k CPU.
OCS Chipset - AmigaOS 1.x
A1000. 1985, 68000 CPU @ 7 MHz. AmigaOS v1.0
A500. 1987, 68000 CPU @ 7 MHz. AmigaOS v1.2 - 1.3
A2000. 1987, 68000 CPU @ 7 MHz. AmigaOS v1.2/1.3 or 2.0
CDTV. 1990, 68000 CPU @ 7 MHz. AmigaOS 1.3
ECS Chipset - AmigaOS 2.x
A3000. 1990, 68030 CPU @ 16 or 25 MHz. AmigaOS 1.3 or 2.x
A500+. 1991, 68000 CPU @ 7 MHz. AmigaOS 2.04
A600. 1992, 68000 CPU @ 7 MHz. AmigaOS 2.05
AGA Chipset - AmigaOS 3.x
A1200. 1992, 68020 CPU @ 14 MHz. AmigaOS 3.0/3.1
A4000. 1992, 68030 CPU @ 25 MHz. AmigaOS 3.0
CD32. 1993, 68020 CPU @ 14 MHz. AmigaOS 3.1
Refrence