Apple Macintosh LC 550 vs Apple Macintosh LC 575

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Macintosh LC 550 compared with Macintosh LC 575

	AppleMacintosh LC 550	AppleMacintosh LC 575
Overview
Released
Released	1994	1994
Performance
Processor
Processor	Motorola 68030 33 MHz (Macintosh LC 550)	Motorola 68LC040 33 MHz (Macintosh LC 575)
CPU cores
CPU cores	1	1
Memory
Memory	4 MB	4 MB
Storage
Storage	160 MB	160 MB to 320 MB (better)
CPU
CPU	33 MHz Motorola 68030 with built-in memory management unit and socket for an optional 68882 floating-point unit	33 MHz Motorola 68LC040 with no floating-point unit
GPU
GPU	512 KB video RAM displays 8-bit colour at 640 × 480; an upgrade to 768 KB enables 16-bit colour	Built-in video uses 512 KB VRAM standard, expandable to 1 MB; the 640 × 480 display supports 8-bit colour standard and 16-bit colour with upgraded VRAM
Memory type
Memory type	4 MB on the logic board with one 72-pin SIMM socket, expandable to 36 MB	4 MB soldered RAM standard, expandable to 36 MB with one 72-pin SIMM
Storage type
Storage type	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.	160 or 320 MB internal SCSI hard drive and 1.44 MB floppy drive; internal AppleCD 300i Plus CD-ROM was optional
Expansion slots
Expansion slots	One LC processor-direct slot	One LC-compatible processor-direct slot and one communications slot for an optional modem or Ethernet card
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 with 640 × 480 pixels	Built-in 14-inch Trinitron colour CRT
Connections
Ports
Ports	Headphone jack	Headphone jack
Back ports
Back ports	Two Apple Desktop Bus ports, two serial ports, external SCSI, audio input and stereo output; front headphone jack	Apple Desktop Bus, external DB-25 SCSI, two serial ports, audio input and output; front headphone jack
Speakers
Speakers	Two 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
In the box
In the box	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.	Apple's 1994 developer note documents the original 68LC040 configuration. Its current support page at article 112222 describes a later PowerPC upgrade-card configuration, which is excluded here; a distinct maker first-sale date was not established.