600XL
- Released 1983
- 6502 at 1.92MHz
- 16kB RAM (expandable to 64kB), 24kB ROM
- Text 40x24
- Graphics 320x192 (2 colour), 160x192 (4 colour)
- 4 channel sound
- BASIC, assembler
- Tape and 5.25" floppy disc
130XE
- Released 1985
- 6502 at 1.92MHz
- 128kB RAM, 24kB ROM
- Text 40x24
- Graphics 320x192 (2 colour), 160x192 (4 colour)
- 4 channel sound
- BASIC, assembler
- Tape and 5.25" floppy disc
520ST/FM
- Original STF released 1985 (no integral floppy drives or TV modulator)
- STFM released 1986
- 68000 at 8MHz
- 512kB RAM (expandable to 4MB)
- Text 40x25 (4 or 16 colour) or 80x25 (black & white)
- Graphics 640x400 (2 colour), 640x200 (4 colour), 320x200 (16 colour)
- Colour palette of 512
- 3 channel mono sound
- MIDI ports made it popular with musicians
- Integrated 3.5" floppy disc, port for external hard disc
Atari 520STE
- Released 1989
- CPU 68000 at 8MHz
- RAM 512k (expandable to 4MB)
- ROM 256k
- Text 40x25 (16 colour or 4 colour), 80x25 (2 colour)
- Graphics 320x200 (16 colour), 640x200 (4 colour), 640,400 (2 colour), palette 4096 colours
- 4 channel stereo sound
- 4 joystick ports
- MIDI port
- Integral 3.5" floppy disc, connection for external hard disc
This machine was an enhanced version of the 520STFM, with improved sound and graphics - on a par with the Commodore Amiga. However, in order to keep their games compatible with the STFM range, few software companies used the extra facilities.