| Commodore 64 |
|---|
| CPU | 6510 |
| RAM | 64 Kb |
| ROM | 20 Kb |
| Text mode | 25*40 characters |
| Graphics | 320*200, 16 colours |
| Sound: | 3 channels and 9 octaves. |
| Storage: | Commodore's tape recorder or 5,25" Commodore 1541 disc drive, later more choices like 1581 3,5" disc drive. |
| I/O: | Tape,TV, audio/video, Commodore's own serial and parallel bus, module,joystick, user port. |
| Operating system: | Basic in ROM, but GEOS and CP/M could be bought |
| Size: | 404 mm * 204 mm * 74 mm / 1,8kg |
| Target audience: | Home. |
| Misc: | Basic was a little bit poor without an expansion module called Simon's Basic. 40 char display was not very good for serious work. |
| Commodore 128 and 128D (Information about the 128-mode, C64-mode is just like C64). |
|---|
| CPU 1 | MOS Technology 8502 2,5 MHz (the processor has a 6510-compatible 1MHz mode for C64 programs) |
| CPU 2 | Zilog Z80 4MHz (CP/M) |
| RAM | 128 Kb (max 512 Kb) |
| ROM | 48 Kb including 16Kb DOS |
| Text | 25*80/25*40 characters |
| Graphics | max 640*200, max 16 colours |
| Sound: | 3 channels and 9 octaves. |
| Storage: | Commodore's tape or 5,25" Commodore 1571 disk drive (C128D has one built-in). Also Commodore 1541 etc. may be used. |
| Expansion ports: | Tape,tv, audio/video, Commodore's own serial- and parallel bus, module, joystick, user port. Reset button. |
| Operating systems: | Basic in ROM, CP/M, and GEOS could be bought |
| Size: | 430 mm * 325 mm * 55 mm / 3 kg (C128, not D) |
| Target audience: | Home, business. |
| Misc: | Three computers in one: C64,CP/M and C128. |
C64 and 1541
C128 and 1571
C128
C128
C128
C128D with a built in 1571 and an external keyboard 
C128D
C128D
GEOS.