Apple Macintosh PowerBook 140 vs Apple Macintosh PowerBook 145B
Better figure, where one is clearly better
| AppleMacintosh PowerBook 140 | AppleMacintosh PowerBook 145B | |
|---|---|---|
| Overview | ||
| Released | October 1991 | June 1993 |
| Display | ||
| Screen size | 10″ | 10″ |
| Resolution | 640 × 400 | 640 × 400 |
| Touchscreen | No | No |
| Display type | 10-inch backlit FSTN monochrome LCD, 640 × 400 pixels at 1-bit colour. Apple's 1991 product information rounds the diagonal to 10 inches; some later catalogues call it 9.8 inches. | 10-inch backlit supertwist passive-matrix monochrome LCD at 640 × 400 |
| Performance | ||
| Processor | 68030 16 MHz (PowerBook 140) | Motorola 68030 25 MHz (PowerBook 145B) |
| CPU cores | 1 | 1 |
| Memory | 2 MB or 4 MB | 4 MB |
| Storage | 20 MB to 40 MB | 40 MB to 80 MB (better) |
| CPU | 16 MHz Motorola 68030 with an integrated memory-management unit and no floating-point coprocessor. | 25 MHz Motorola 68030 without a floating-point coprocessor |
| Memory type | 2 MB pseudostatic RAM on the logic board and one expansion slot; 8 MB maximum. | 4 MB on the logic board, expandable to 8 MB with a memory card |
| Storage type | Original 20 MB and 40 MB internal SCSI hard-drive configurations; built-in 1.4 MB SuperDrive floppy drive. Apple's later support sheet lists 40–80 MB internal drives. | Internal SCSI hard drive; Apple's contemporary catalogue offered 40 or 80 MB with a built-in 1.4 MB Apple SuperDrive floppy drive |
| Battery and size | ||
| Battery life (maker's claim) | Up to 3 hours | Up to 3 hours |
| Weight | 3.03 kg (better) | 3.1 kg |
| Thickness | – | 58 mm |
| Width × depth | – | 287 × 236 mm |
| Battery life detail | Removable nickel-cadmium battery; Apple claimed 2–3 hours of use before recharging. | Removable nickel-cadmium battery; Apple stated an average 2.5–3 hours of operation |
| Connections | ||
| Operating system | macOS | macOS |
| Port detail | One Apple Desktop Bus (ADB) port, HDI-30 SCSI connector, two RS-422 serial ports, mono audio input and stereo output. An internal 2400-baud fax modem was optional. | ADB, HDI-30 SCSI, two serial ports and audio input/output; optional internal modem; no video output |
| Keyboard | Built-in keyboard with a centred 30 mm trackball below the keys. | – |
| Trackpad | Built-in trackball. | Built-in trackball |
| Speakers | – | Built-in speaker |
| In the box | System 7.0.1, battery and AC adapter. Apple dates the model's introduction to 21 October 1991; the technical sheet does not state a separate first-sale day. | – |
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