PowerBook 5300
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| PowerBook 5300 | |
|---|---|
| Manufacturer | Apple Computer |
| Introduced | August 25, 1995 |
| Discontinued | August 3, 1996 |
| Price | US$2300 - 6800 |
| CPU | PowerPC 603e, 100 - 117 MHz |
| RAM | 8 MiB, expandable to 64 MiB, 70 ns unique DRAM card |
| OS | System 7.5.2 |
The PowerBook 5300 series was the first generation of PowerBook laptops manufactured by Apple Computer to use the PowerPC processor. Released in August 1995, these PowerBooks were notable for being the first to feature hot-swappable expansion modules for a variety of different units such as ZIP drives; PC card slots as standard; and an infrared communication port.[1] In common with most preceding Macintosh portables, SCSI, Serial, and ADB ports were available as standard. An internal expansion slot was also available for installing a variety of modules including Ethernet and video cards to drive a second monitor in mirroring or dual-screen modes.
Although a significant advance over preceding portable Macs, it is quite common to see the PowerBook 5300 series listed as among the worst Apple products of all time.[2]
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[edit] Specifications
There were four models in the 5300 series, ranging from the low-end greyscale 5300 to the deluxe high resolution TFT-equipped 5300ce:
| Model | Display | CPU clock | Standard RAM | Retail price |
|---|---|---|---|---|
| PowerBook 5300 | 640x480 pixel passive matrix greyscale LCD | 100 MHz | 8 MiB | US$2300 |
| PowerBook 5300cs | 640x480 pixel passive matrix color LCD | 100 MHz | 8/16 MiB | US$2900 |
| PowerBook 5300c | 640x480 pixel active matrix color LCD | 100 MHz | 8/16 MiB | US$3900 |
| PowerBook 5300ce | 800x600 pixel active matrix color LCD | 117 MHz | 16 MiB | US$6800 |
[edit] Design
The PowerBook 5300 was designed during 1993 and 1994 under the codename M2. Compared with the preceding PowerBook 500 series, the 5300 was explicitly designed to be as small as possible (which precluded the use of a CD-ROM drive) and featured a more compact but less curvy design. Pop-out feet were used instead of the rotating rocker-style feet typical of earlier PowerBooks, and a slightly darker shade of grey was used for the plastic casing.[1] The PowerBook 190 used an identical casing and shared many features and internal components, but used the older and slower Motorola 68LC040 processor instead, which could be upgraded to a full PPC processor. Likewise, the PowerBook 150 could be considered the low-end of the 5300 line, sporting many of the same internals running an even more dated Motorola 68030 processor in a 100 Series case.
[edit] Problems
For a variety of reasons, the PowerBook 5300 series has been viewed as a disappointment. Problems with cracked cases and overheating batteries prompted several recalls,[3] while some users were simply unimpressed with the specifications of the machine and its lackluster performance.[2]
[edit] Lack of L2 cache
Although the PowerPC 603e processor built into the 5300 series was relatively fast for its time, because these machines lacked a Level 2 cache, real world performance was much less than the CPU frequency would suggest.[2]
[edit] Expansion bay options
The variety of expansion bay options available was wide, but because of the size and shape of the computer, fitting a CD-ROM drive into the available space wasn't possible.[1] Apple had a prototype CD-ROM module compatible with non-standard 80 mm disks that would have been used with the PowerBook 5300 series, but finished versions of this device were never released.[citation needed] Instead, it was planned that the 5300 series would use 3.5 inch magneto-optical drive modules initially, with the option of releasing a stretched version a year or two later that had space for a full-sized CD-ROM drive.[1]
[edit] Batteries
Two early production PowerBook 5300s caught fire, one at an Apple employee's house and another at the factory; it turned out that the Sony manufactured lithium ion batteries had overheated while recharging. Apple recalled the 5300s sold (around a hundred machines) and replaced the batteries on these and all subsequent 5300s with nickel metal hydride batteries that provided only about 70% the endurance. At the time, the media viewed the problems with the PowerBook 5300 series as yet another example of Apple's decline.[3]
[edit] Legacy
Apple's next high-end series of portables, the PowerBook 3400 series introduced in February of 1997, shared an almost identical form factor with the 5300, right down to being able to share many of the same hot-swappable expansion modules. On the other hand, the 3400 series were substantially different machines on the inside, featuring things like DMA and PCI architecture.[4] The first series of PowerBook G3 portables released in November 1997 were internally even more advanced, being built around the PowerPC G3 processor, though they still retained the basic PowerBook 5300 form factor. Apple did not introduce portables with an entirely new form factor until March 1998 with the release of the "Wallstreet" G3 PowerBooks.
[edit] References
- ^ a b c d Paul Kunkel & Rick English, Apple Design pp 260-261, Graphis. ISBN 1-8880-0125-9.
- ^ a b c lowendmac.com: Road Apples: PowerBook 5300
- ^ a b Owen Linzmayer, Apple Confidential p 237, No Starch Press. ISBN 1-5632-7010-0
- ^ Paul Kunkel & Rick English, Apple Design pp 265-267, Graphis. ISBN 1-8880-0125-9.
[edit] External links
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