Apple Macintosh Centris 610 vs Apple Macintosh Centris 650

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Macintosh Centris 610 compared with Macintosh Centris 650

	AppleMacintosh Centris 610	AppleMacintosh Centris 650
Overview
Released
Released	1993	1993
Performance
Processor
Processor	Motorola 68LC040 20 MHz (Macintosh Centris 610)	Motorola 68040 25 MHz (Macintosh Centris 650) or Motorola 68LC040 25 MHz (Macintosh Centris 650)
CPU cores
CPU cores	1	1
Memory
Memory	4 MB	4 MB
Storage
Storage	80 MB	–
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 or 68LC040; the latter has no floating-point unit
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 video with 512 KB VRAM, expandable to 1 MB; supports an external monitor through a 15-pin video connector
Memory type
Memory type	4 MB on the logic board with two 72-pin SIMM slots, expandable to 68 MB	4 or 8 MB minimum RAM depending on configuration, with four SIMM slots; up to 136 MB
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'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 optional
Expansion slots
Expansion slots	One expansion position for either a seven-inch NuBus card or a processor-direct-slot card, using the appropriate adapter	Three NuBus slots and one processor-direct slot; a PDS card occupies the position of one NuBus 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	330 × 419 × 152 mm
Operating system
Operating system	macOS	macOS
Size and weight detail
Size and weight detail	Apple lists a weight of 14 lb	–
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.	Apple'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.
Connections
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	Two Apple Desktop Bus ports, two serial ports, external SCSI, video, audio input and output; Apple AUI Ethernet was optional
Speakers
Speakers	Built-in mono speaker with stereo audio output	Built-in mono speaker with stereo audio output jack