Atari 400¶

• Released: 1979
• Discontinued: 1983
• OS: Atari OS (8-bit)
• CPU: MOS Technology 6502B @ 1.77 MHz (PAL)
• RAM: 8/16 KB
• ROM: ??? KB
• Video: ANTIC, CTIA
• Sound: POKEY
• Media: ROM cartridge

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Atari 600XL¶

• Released: 1983
• Discontinued: 1984
• OS: Atari OS (8-bit)
• CPU: MOS Technology 6502B @ 1.77 MHz (PAL)
• RAM: 16 KB
• Media: ROM cartridge

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Atari 800XL¶

• Released: 1983
• Discontinued: 1985
• OS: Atari OS (8-bit)
• CPU: MOS Technology 6502B @ 1.77 MHz (PAL)
• RAM: 64 KB
• Media: ROM cartridge

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Atari 65XE¶

• Released: 1985
• OS: Atari OS (8-bit)
• CPU: MOS Technology 6502B @ 1.77 MHz (PAL)
• RAM: 64 KB
• Media: ROM cartridge

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Atari 130XE¶

• Released: 1985
• OS: Atari OS (8-bit)
• CPU: MOS Technology 6502B @ 1.77 MHz (PAL)
• RAM: 128 KB
• Media: ROM cartridge

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Atari 800XE¶

• Released: 1987
• OS: Atari OS (8-bit)
• CPU: MOS Technology 6502B @ 1.77 MHz (PAL)
• RAM: 64 KB
• Media: ROM cartridge

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Atari XE Game System¶

• Released: 1987
• OS: Atari OS (8-bit)
• CPU: MOS Technology 6502B @ 1.77 MHz (PAL)
• RAM: 64 KB
• ROM: 30 KB
• Media: ROM cartridge
• Notes: features Missile Command game (8 KB) built-in on ROM

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Atari 2600¶

• Released: 1977
• Discontinued: 1991
• OS: Atari OS (8-bit)
• CPU: MOS Technology 6507 @ 1.19 MHz
• RAM: 128 bytes
• ROM: 4 KB
• Video: TIA
• Sound: TIA
• Media: ROM cartridge

Atari 2600 Jr.¶

• Released: 1986
• Discontinued: 1992
• CPU: MOS Technology 6507 @ 1.19 MHz
• RAM: 128 bytes
• ROM: 4 KB
• Video: TIA
• Sound: TIA
• Media: ROM cartridge

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Atari 7800¶

• Released: 1986
• Discontinued: 1992
• CPU: MOS Technology 6502C "SALLY" @ 1.19-1.77 MHz
• RAM: 4 KB
• ROM: 4 KB
• Video: MARIA
• Sound: TIA
• Media: ROM cartridge