page_title: Macintosh LC 500 series
section_title: LC 580
hierarchical_section_title: Macintosh LC 500 series / LC 580
caption_attribution_description: English: Front view of a Macintosh Performa 580CD
context_page_description: The Macintosh LC 500 series is a series of personal computers that were a part of Apple Computer's Macintosh LC family of Macintosh computers. It was Apple's mid-1990s mainstream education-market Macintosh, featuring an all-in-one desktop design with a built-in 14" CRT display, CD-ROM drive, and stereo speakers. Designed as a successor to the compact Macintosh family of computers, the case is similar to the then recently introduced Macintosh Color Classic, but considerably larger and heavier due to its larger screen and a bulging midsection to house the larger electronics.
  The 500 series included four main models, the 520, 550, 575, and 580, with the 520 and 550 both using different speeds of the Motorola 68030, and the 575 and 580 sharing the 33MHz Motorola 68LC040 processor but differing on the rest of the hardware. All of these computers were also sold to the consumer market through department stores under the Macintosh Performa brand, with similar model numbers. The LC models, in particular, became very popular in schools for their small footprint, lack of cable clutter, and durability.
context_section_description: The Macintosh LC 580 was sold from April 1995 to May 1996. Like the LC 575, it is built around a Motorola 68LC040 processor, running at 33 MHz. However, instead of using the same sized, SCSI-only, logic boards based on the LC 475/Quadra 605 like the LC 575, the 580 uses the larger logic board of the Performa 630. This meant a few changes, most of them leading to lower prices, but also lower performance: Most notably, the hard drives of the 580 were IDE drives instead of SCSI drives. Also, the video RAM was no longer mounted on a SIMM, but used 1 MB of the 4 MB of main RAM soldered to the motherboard. Lastly, the Trinitron display of the 575 was replaced with a cheaper shadow mask screen, causing a slight change in the plastic case surrounding the CRT. One benefit of this change was the ability to accommodate the same video capture and TV tuner cards designed for the Performa 630.  This allowed LC 580 users to watch and record video, essentially performing the function of a television as well as a computer.
  The LC 580 and LC 630 DOS Compatible, which were introduced at the same time, were last the Macintosh desktop systems to be built around a Motorola 68000-series processor. Its replacement, the Power Macintosh 5200 LC, features a PowerPC processor. Apple also offered an upgrade path for the 580 in the form of a PowerPC Macintosh Processor Upgrade. The 580 can also be upgraded with the following logic boards: 5200 LC, 6200, 5260, 5300, 6300, 5400, 6400, 5500 and 6500.
caption: A Macintosh Performa 580CD
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