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Apple Macintosh PowerBook Duo 210 vs Apple Macintosh PowerBook Duo 270c

Every spec side by side, from each maker's published figures.

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AppleMacintosh PowerBook Duo 210AppleMacintosh PowerBook Duo 270c
Overview
ReleasedOctober 19921993
Display
Screen size9″8.4″
Resolution640 × 400640 × 480
TouchscreenNoNo
Display typeBacklit supertwist passive-matrix LCD with 16 grey levelsBacklit active-matrix TFT colour LCD; 256 colours at 640 × 480 or thousands at 640 × 400. Apple's exact-model product description gives 8.4 inches; the later service table labels this model 9 inches
Screen finish–Antiglare polariser
Performance
ProcessorMotorola 68030 25 MHz (PowerBook 145B)Motorola 68030 33 MHz
CPU cores11
Memory4 MB4 MB or 12 MB
Storage80 MB240 MB
CPU25 MHz Motorola 68030Motorola 68030 at 33 MHz with an integrated memory-management unit and a separate Motorola 68882 maths coprocessor at 33 MHz
GPU–Colour Screen Controller with video RAM; selecting thousands of colours centres a 640 × 400 image with black bands above and below
Memory type4 MB on the logic board and one expansion slot; Apple states a 24 MB maximum using a third-party memory card4 MB soldered on the logic board, with one Duo expansion-card slot; maximum 32 MB. Apple memory kits expand to 8 or 12 MB; larger capacities require third-party cards
Storage typeInternal 80 MB hard drive; optional external 1.4 MB floppy drive requires a Duo Floppy Adapter or Duo MiniDockInternal 240 MB SCSI hard drive in the two configurations listed in Apple's product description. The developer note also describes a 160 MB option, without an ordering configuration. External 1.4 MB floppy drive requires a Duo Floppy Adapter or Duo MiniDock
Battery and size
Battery life (maker's claim)Up to 4.5 hoursUp to 4 hours
Weight1.9 kg2.1 kg
Thickness36 mm38 mm
Width × depth277 × 216 mm277 × 216 mm
Battery life detailNickel-metal hydride battery; Apple claims an average of 2–4.5 hoursRemovable Type II nickel-metal hydride battery. Apple's product description claims 2–4 hours; the developer note claims 4.5 hours, while the later service manual gives approximately 2–3 hours. Service weight is 2.1 kg with a battery; its paired 4.8 lb figure is inconsistent. Dimensions are rounded from Apple's 10.9 × 8.5 × 1.5 inch support table; the service manual swaps width/depth and pairs 1.5 inches with 36 mm
Charger–AC adapter supplied; service manual gives a 24 V DC, 1.04 A output
Connections
Operating systemmacOSmacOS
Port detailSerial/LocalTalk, docking connector, power input and internal modem expansion; desktop video and additional connections require a compatible dock152-pin docking connector, RS-422 serial/LocalTalk mini-DIN-8 port, power input and optional internal Express Modem. Additional video, SCSI and floppy connections require docking accessories
External displays–Optional PowerBook Duo Dock or Duo MiniDock provides external video and desktop peripheral expansion
Keyboard–Built-in keyboard with two-level tilt adjustment; 63 keys on the domestic version or 64 on the ISO version
Trackpad–19 mm trackball with two buttons
SpeakersBuilt-in microphone and speaker; mono sound input/outputFour-voice, 8-bit monophonic sound input and output at 11 or 22 kHz
Microphones–Built-in omnidirectional electret microphone; the support summary's Mic Type none does not describe the built-in microphone documented in the developer and service manuals
In the boxPower adapter; an internal fax/data modem and docking accessories are optionalComputer, battery, AC adapter, System 7.1 software and documentation; desktop docks sold separately. Apple lists introduction on 21 October 1993. The Mac December 1993 buying guide lists the model in the current retail range with a UK basic price; no exact first-sale month is established, so release precision remains the year

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