Apple Macintosh Centris 610 vs Apple Macintosh Centris 660AV

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Macintosh Centris 610 compared with Macintosh Centris 660AV

	AppleMacintosh Centris 610	AppleMacintosh Centris 660AV
Overview
Released
Released	1993	1993
Performance
Processor
Processor	Motorola 68LC040 20 MHz (Macintosh Centris 610)	Motorola 68040 25 MHz (Macintosh Centris 660AV)
CPU cores
CPU cores	1	1
Memory
Memory	4 MB	4 MB
Storage
Storage	80 MB	81.92 MB (better)
CPU
CPU	20 MHz Motorola 68LC040 with integrated memory management unit and 8 KB L1 cache, but no floating-point unit	25 MHz Motorola 68040 with integrated floating-point unit, 8 KB L1 cache and 32-bit data path; separate 55 MHz AT&T 3210 digital signal processor
GPU
GPU	Built-in video has 512 KB VRAM standard and supports up to 1 MB; at 640 × 480, 8-bit colour is standard and 16-bit colour requires the VRAM upgrade	Built-in 1 MB VRAM supports 832 × 624 at 16-bit colour or 1152 × 870 at 8-bit colour
Memory type
Memory type	4 MB on the logic board with two 72-pin SIMM slots, expandable to 68 MB	4 MB soldered memory and two 72-pin SIMM slots; Apple lists 4–68 MB total with 70 ns memory
Storage type
Storage type	Apple's specification lists internal SCSI hard drives from 80 to 500 MB, a 1.44 MB floppy drive and optional 2× CD-ROM drive	Apple developer note lists an 80 MB internal SCSI hard drive in its base configuration; support lists an 80–500 MB range. A 1.44 MB floppy drive is built in; a 2× CD-ROM was an option.
Expansion slots
Expansion slots	One expansion position for either a seven-inch NuBus card or a processor-direct-slot card, using the appropriate adapter	One short NuBus card using an optional angle adapter, or a processor-direct card
Display
Screen
Screen	None built in	None built in
Design and power
Type
Type	Compact	Compact
Width × depth × height
Width × depth × height	415 × 397 × 85 mm	–
Operating system
Operating system	macOS	macOS
Size and weight detail
Size and weight detail	Apple lists a weight of 14 lb	Apple lists 3.4 × 16.3 × 15.6 inches and 14 lb
Power supply
Power supply	–	Maximum 86 W; 100–240 V AC at 50–60 Hz; 3.6 V lithium clock battery
In the box
In the box	Apple lists 10 February 1993 as introduction; a distinct first-sale date was not established. The 86 W specification is power-supply capacity, not measured running consumption.	Original System Software 7.1. Apple lists 29 July 1993 as introduction; a separate first-sale date was not established. Apple's developer note gives a 4 MB/80 MB base configuration, while later catalogue sources mention larger bundled options.
Connections
Ports
Ports	–	Ethernet
Back ports
Back ports	Two Apple Desktop Bus ports, two serial ports, external DB-25 SCSI, DB-15 video, audio input and output; Apple AUI Ethernet was optional	DB-15 monitor output, Apple Desktop Bus, external DB-25 SCSI, two serial connections including GeoPort, AAUI Ethernet, composite and S-video input and output, sound input and output
External displays
External displays	–	Built-in video supports one external monitor at up to 1152 × 870 pixels in 8-bit colour
Speakers
Speakers	Built-in mono speaker with stereo audio output	–