Apple Macintosh LC 520 vs Apple Macintosh LC 550

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Macintosh LC 520 compared with Macintosh LC 550

	AppleMacintosh LC 520	AppleMacintosh LC 550
Overview
Released
Released	1993	1994
Performance
Processor
Processor	68030 25 MHz (Macintosh LC 520)	Motorola 68030 33 MHz (Macintosh LC 550)
CPU cores
CPU cores	1	1
Memory
Memory	4 MB	4 MB
Storage
Storage	80 MB to 160 MB	160 MB
CPU
CPU	25 MHz Motorola 68030 with 32-bit data path, 0.5 KB L1 cache and optional 68882 floating-point coprocessor	33 MHz Motorola 68030 with built-in memory management unit and socket for an optional 68882 floating-point unit
GPU
GPU	Built-in video with 512 KB VRAM supports 640 × 480 at 8-bit colour; an optional 768 KB allocation supports 16-bit colour	512 KB video RAM displays 8-bit colour at 640 × 480; an upgrade to 768 KB enables 16-bit colour
Memory type
Memory type	4 MB on the logic board, expandable to 36 MB with one 72-pin SIMM	4 MB on the logic board with one 72-pin SIMM socket, expandable to 36 MB
Storage type
Storage type	Internal SCSI hard drive, 1.44 MB floppy drive and optional 2× CD-ROM. Apple's support sheet lists 80–160 MB hard drives; its original developer note also lists a 40 MB option.	160 MB internal SCSI hard drive configuration, 1.44 MB floppy drive and optional internal 2× CD-ROM. Apple's 1994 technical booklet also lists 40 and 80 MB drives; its later support sheet lists 160 MB minimum.
Expansion slots
Expansion slots	One LC processor-direct slot	One LC processor-direct slot
Display
Screen size
Screen size	14″	14″
Resolution
Resolution	640 × 480	640 × 480
Panel
Panel	CRT	CRT
Display type
Display type	Built-in 14-inch Trinitron colour CRT	Built-in 14-inch Trinitron colour CRT with 640 × 480 pixels
Connections
Ports
Ports	Headphone jack	Headphone jack
Back ports
Back ports	Two Apple Desktop Bus ports, external DB-25 SCSI, printer and modem serial connections, microphone input and headphone output	Two Apple Desktop Bus ports, two serial ports, external SCSI, audio input and stereo output; front headphone jack
Speakers
Speakers	Built-in stereo speakers	Two built-in stereo speakers
Microphones
Microphones	Built-in microphone	Built-in microphone
Design and power
Type
Type	All-in-one	All-in-one
Weight
Weight	–	18.4 kg
Width × depth × height
Width × depth × height	–	344 × 419.8 × 443.4 mm
Operating system
Operating system	macOS	macOS
Size and weight detail
Size and weight detail	Apple lists 17.9 × 13.5 × 16.5 inches and 40.5 lb	–
Power supply
Power supply	Maximum 40 W according to Apple's technical sheet	–
In the box
In the box	Apple lists 28 June 1993 as the introduction date; a separate first-sale date was not established.	Apple's support sheet lists 2 February 1994 as introduction, but a distinct first-sale date was not established. Its support sheet says 40 W maximum whereas its 1994 technical booklet says 120 W; power is therefore omitted.