Macintosh PowerBook Duo 270c

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PowerBook Duo 270c.jpg
Macintosh PowerBook Duo 270c
CPU: 33 MHz Motorola MC68030
RAM Type:Duo RAM
Maximum RAM: 24 MiB (Apple), 32 MiB (Actual)
Supported OS: System 7.1 - Mac OS 8.1
Introduced:October 21 1993
Discontinued:May 1 1994
MSRP:$3100 (US)
Full Specifications

Released along with the Duo 250, the Duo 270c might not have been blistering or revolutionary in terms of performance but it did bring colour to the Duo family.


The Duo series had proved to be a big hit with customers who appreciated the reduction in box size, but not at the expense of speed or performance. Yes, some customers were frustrated by the elimination of the floppy drive and most of the connectivity, but the PowerBook 1xx series was the alternative for those who simply had to have a floppy disk drive or Ethernet connection when they were out in the big, wide world.

The release of the 210 and Duo 230 had certainly caused a stir and, one year later, it was time for Apple to unleash the two new machines in the Duo series: The Duo 250 and the Duo 270c.

Both machines were more evolutionary than revolutionary, but even here, hardly did much over and above the older models. Both used the same Motorola 68030, running at 33 MHz, as used in the Duo 230; all three had the same base memory and memory ceiling; and they all used the same ultra-compact case. The only real difference was that the two new machines used the newer Type II batteries, which improved battery life, and came with larger hard disks – raised to 200 MiB in the 250, and 240 MiB in the 270c.

In fact, the only major change came in the form of the screen, and whilst the 250 used a mono active matrix panel, as opposed to the passive matrix displays seen in the two earlier machines, the 270c used a colour active matrix display. This was the first time that colour had come to the Duo line, and it was a much needed shot in the arm for a series which seemed to be somewhat lacking in ideas. With an improved resolution of 640×480 – the other three Duo machines ran at 640×400 – the panel looked great, but was shrunk from the 9.8", seen on the previous models, to a somewhat cramped 8.4".

Full Specifications

  • General
    • CPU: 33 MHz Motorola MC68030
    • ROM: 1 MiB
    • Bus Speed: 33 MHz
    • Data Path: 32-bit
    • RAM Type: Duo RAM (70 ns)
    • Standard RAM: 4 MiB
    • RAM Onboard: 4 MiB
    • RAM Slots: 1
    • Maximum RAM(Apple): 24 MiB
    • Maximum RAM(Actual): 32 MiB
    • Cache: ½ KiB (L1)
  • I/O & Expansion
    • Serial: 1
    • Built-in Speaker: 8-bit mono 22 KHz
  • Storage
    • Hard Drive: 240 MiB
    • Hard Drive Type: SCSI
  • Video
    • Built-in Display: 8.4" 16-bit 640×480 colour active matrix
    • Max Resolution: 640×480 (8-bit), 640×400 (16-bit)
  • Miscellaneous
    • Codename: Escher
    • Gestalt ID: 77
    • Power: One Type II Nickel Hydride
    • Case Style: Duo
    • Dimensions: 10.9" x 8.5" x 1.4" (W x D x H)
    • Weight: 4.8 lbs.
    • Mac OS Support: System 7.1 - Mac OS 8.1
    • Introduced: October 21 1993
    • Introduced: May 1 1994
    • MSRP: $3100 (US)

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