Apple Macintosh PowerBook 145 vs Apple Macintosh PowerBook 145B

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Macintosh PowerBook 145 compared with Macintosh PowerBook 145B

	AppleMacintosh PowerBook 145	AppleMacintosh PowerBook 145B
Overview
Released
Released	August 1992	June 1993
Display
Screen size
Screen size	9.8″	10″
Resolution
Resolution	640 × 400	640 × 400
Touchscreen
Touchscreen	No	No
Display type
Display type	9.8-inch passive-matrix monochrome LCD at 640 × 400	10-inch backlit supertwist passive-matrix monochrome LCD at 640 × 400
Performance
Processor
Processor	Motorola 68030 25 MHz (PowerBook 145)	Motorola 68030 25 MHz (PowerBook 145B)
CPU cores
CPU cores	1	1
Memory
Memory	2 MB	4 MB (better)
Storage
Storage	40 MB to 80 MB	40 MB to 80 MB
CPU
CPU	25 MHz Motorola 68030 without a floating-point coprocessor	25 MHz Motorola 68030 without a floating-point coprocessor
Memory type
Memory type	2 MB on the logic board, expandable to 8 MB with a memory card	4 MB on the logic board, expandable to 8 MB with a memory card
Storage type
Storage type	Internal 2.5-inch SCSI hard drive in 40 or 80 MB configurations; built-in 1.44 MB floppy drive	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)
Battery life (maker's claim)	–	Up to 3 hours
Weight
Weight	3.1 kg	3.1 kg
Thickness
Thickness	57 mm (better)	58 mm
Width × depth
Width × depth	286 × 236 mm	287 × 236 mm
Battery life detail
Battery life detail	Removable nickel-cadmium battery	Removable nickel-cadmium battery; Apple stated an average 2.5–3 hours of operation
Connections
Operating system
Operating system	macOS	macOS
Port detail
Port detail	ADB, HDI-30 SCSI, two serial ports and audio input/output; optional internal modem; no video output	ADB, HDI-30 SCSI, two serial ports and audio input/output; optional internal modem; no video output
Trackpad
Trackpad	Built-in trackball	Built-in trackball
Speakers
Speakers	Built-in speaker and microphone	Built-in speaker