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PowerBook 170
PowerBook
1990-1999

PowerBook 170

Top-of-the-line first PowerBook. First Apple laptop with an active-matrix display.

Launched October 21, 1991 as the flagship of Apple's first PowerBook generation, the PowerBook 170 represented the absolute pinnacle of what portable Macintosh computing could achieve at the dawn of the 1990s. It shared the industry-defining ergonomic chassis of its siblings, the rear keyboard, centered trackball, and palm rest arrangement that would go on to define laptop design for the following decades, but distinguished itself with a faster 25MHz 68030 processor and, most notably, the first active-matrix liquid crystal display ever fitted to an Apple laptop. That active-matrix screen was a genuine showstopper for its era, offering dramatically sharper contrast, faster response times, and far less ghosting than the passive-matrix displays used in the 100 and 140, making it noticeably more pleasant for serious extended use, particularly for graphics-conscious professionals and anyone doing detailed desktop publishing work on the go. It also included a built-in floating-point coprocessor, the 68882, a feature aimed squarely at scientific, engineering, and CAD professionals who needed genuine numeric computation performance without being tethered to a desktop workstation. Its price reflected its premium positioning, sitting well above both the 100 and 140, and it was explicitly marketed toward professionals and power users who needed the very best portable Macintosh experience money could buy and were willing to pay accordingly. Reviewers were thoroughly impressed, frequently singling out the active-matrix display as the single most compelling reason to choose the 170 over its cheaper siblings, while acknowledging that its price and slightly shorter battery life relative to the 140 represented real tradeoffs. It quickly became something of a status symbol among traveling executives, engineers, and creative professionals, embodying Apple's ability to translate serious desktop-class performance and display quality into a genuinely portable package for the first time. The 170's success alongside the 100 and 140 in that single October 1991 launch is widely regarded as one of Apple's most significant strategic triumphs of the early 1990s, instantly establishing the company as a serious force in the fast-growing laptop market after years of disappointment following the unwieldy 1989 Portable. Its active-matrix display technology and integrated FPU set a clear technical bar that subsequent PowerBook models, including the enormously popular 180 that would follow the next year, would continue to build upon. The PowerBook 170 remains fondly remembered today as the machine that proved Apple could build not just a usable laptop, but a genuinely premium, professional-grade one.

Launch price: $4,599

Mac History Timeline

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PowerBook 1701991โ€“1992

Full Specifications

Availability

IntroducedOctober 21, 1991
DiscontinuedOctober 19, 1992
Original OSSystem 7.0.1

Processor

CPUMotorola 68030
Clock Speed25 MHz
FPUMotorola 68882
System Bus25 MHz

Memory

Standard RAM4 MB
Maximum RAM8 MB
RAM TypeProprietary
RAM Slots1

Storage

Storage40 or 80 MB HDD

Display

Display10-inch, 640ร—400, active-matrix monochrome

Graphics

Expansion

Connectivity

Physical

Weight6.8 lbs (3.1 kg)
BatteryLead-acid, ~2.5 hours

Processor Deep Dive

๐Ÿ”ฒ

Motorola 68030

Motorola
Architecture: 68k CISC (full 32-bit)
Introduced: 1987
Process: 1000 nm (HCMOS)
Transistors: 273,000

Running at 25MHz and paired with a built-in 68882 floating-point coprocessor, the 68030 in the PowerBook 170 delivered the fastest performance of Apple's first PowerBook generation, matching the clock speed used in the acclaimed desktop Macintosh IIci. Its full 32-bit-clean architecture and integrated memory management unit made it fully capable of running System 7's more demanding features comfortably. The inclusion of a hardware FPU set the 170 apart from its siblings, targeting engineering, scientific, and CAD professionals who needed genuine numeric computation performance on the go. It represented the most powerful mobile implementation of the 68030 architecture Apple had yet produced.

PowerBook progression ยท 4 of 11

Compatible Operating Systems

System 7.0.1

System 7.0.1

Launch OS

1991

Shipped with the PowerBook 170, taking full advantage of its FPU and fast 68030.

System 7.1

System 7.1

Compatible

1992

Ran excellently, a popular choice among PowerBook 170 professional users.

System 7.5.5

System 7.5.5

Max Supported

1996

The realistic ceiling for a well-equipped PowerBook 170 with maximum RAM installed.

Reviews & Reception

Widely celebrated as the premium flagship of the first PowerBook generation, with its groundbreaking active-matrix display earning particular acclaim despite its high price.

The active-matrix display alone justifies the premium price, delivering a sharpness and clarity no other Mac laptop screen has ever matched.

MacWorld
1991
5/5

With a built-in floating-point unit and the fastest 68030 in any PowerBook, the 170 is the clear choice for engineers and CAD professionals on the move.

MacUser
1991
5/5

A genuinely premium portable computer, though the price and shorter battery life relative to the 140 are real considerations for typical buyers.

BYTE
1992
4/5

Apple has proven a laptop can deliver desktop-class display quality and performance, setting a new bar for the entire industry to chase.

InfoWorld
1992
5/5