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Apple Macintosh Centris 650 vs Apple Macintosh Centris 660AV

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AppleMacintosh Centris 650AppleMacintosh Centris 660AV
Overview
Released19931993
Performance
ProcessorMotorola 68040 25 MHz (Macintosh Centris 650) or Motorola 68LC040 25 MHz (Macintosh Centris 650)Motorola 68040 25 MHz (Macintosh Centris 660AV)
CPU cores11
Memory4 MB4 MB
Storage–81.92 MB
CPU25 MHz Motorola 68040 or 68LC040; the latter has no floating-point unit25 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
GPUBuilt-in video with 512 KB VRAM, expandable to 1 MB; supports an external monitor through a 15-pin video connectorBuilt-in 1 MB VRAM supports 832 × 624 at 16-bit colour or 1152 × 870 at 8-bit colour
Memory type4 or 8 MB minimum RAM depending on configuration, with four SIMM slots; up to 136 MB4 MB soldered memory and two 72-pin SIMM slots; Apple lists 4–68 MB total with 70 ns memory
Storage typeApple's system fact sheet lists 80–500 MB internal SCSI hard drives and a 1.44 MB floppy drive; an internal CD-ROM drive was optionalApple 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 slotsThree NuBus slots and one processor-direct slot; a PDS card occupies the position of one NuBus cardOne short NuBus card using an optional angle adapter, or a processor-direct card
Display
ScreenNone built inNone built in
Design and power
TypeCompactCompact
Width × depth × height330 × 419 × 152 mm–
Operating systemmacOSmacOS
Size and weight detail–Apple lists 3.4 × 16.3 × 15.6 inches and 14 lb
Power supply–Maximum 86 W; 100–240 V AC at 50–60 Hz; 3.6 V lithium clock battery
In the boxApple's original developer note documents the 68040 and 68LC040 configurations. Current Apple support article 112207 describes a later PowerPC upgrade-card configuration and is excluded.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–Ethernet
Back portsTwo Apple Desktop Bus ports, two serial ports, external SCSI, video, audio input and output; Apple AUI Ethernet was optionalDB-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–Built-in video supports one external monitor at up to 1152 × 870 pixels in 8-bit colour
SpeakersBuilt-in mono speaker with stereo audio output jack–

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