Apple Macintosh Centris 650 vs Apple Macintosh Performa 6300CD

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Macintosh Centris 650 compared with Macintosh Performa 6300CD

	AppleMacintosh Centris 650	AppleMacintosh Performa 6300CD
Overview
Released
Released	1993	1995
Performance
Processor
Processor	Motorola 68040 25 MHz (Macintosh Centris 650) or Motorola 68LC040 25 MHz (Macintosh Centris 650)	PowerPC 603e 100 MHz (Macintosh Performa 6300CD)
CPU cores
CPU cores	1	1
Memory
Memory	4 MB	16 MB (better)
Storage
Storage	–	1.2 GB
CPU
CPU	25 MHz Motorola 68040 or 68LC040; the latter has no floating-point unit	100 MHz PowerPC 603e with integrated floating-point unit, 32 KB L1 cache, 256 KB L2 cache and 64-bit data path at 40 MHz
GPU
GPU	Built-in video with 512 KB VRAM, expandable to 1 MB; supports an external monitor through a 15-pin video connector	Integrated 1 MB DRAM video supports 640 × 480 at 16-bit colour or 832 × 624 at 8-bit colour through the DB-15 monitor port
Memory type
Memory type	4 or 8 MB minimum RAM depending on configuration, with four SIMM slots; up to 136 MB	Two 72-pin SIMM slots; 16 MB minimum and 64 MB maximum with 80 ns memory
Storage type
Storage type	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	1.2 GB internal IDE hard drive, 1.44 MB floppy drive and 4× CD-ROM drive
Expansion slots
Expansion slots	Three NuBus slots and one processor-direct slot; a PDS card occupies the position of one NuBus card	Macintosh LC processor-direct slot, communications slot, TV-tuner bay and video input/output slot
Display
Screen
Screen	None built in	None built in
Design and power
Type
Type	Compact	Compact
Width × depth × height
Width × depth × height	330 × 419 × 152 mm	–
Operating system
Operating system	macOS	macOS
Size and weight detail
Size and weight detail	–	Apple lists 4.3 × 12.6 × 16.5 inches and 19 lb for the Quadra 630 form factor
Power supply
Power supply	–	Maximum 55 W; 110–240 V AC at 50–60 Hz; 4.5 V alkaline clock battery
In the box
In the box	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.	Original System Software 7.5.1. Apple lists 16 October 1995 as introduction; a separate first-sale date was not established.
Connections
Ports
Ports	–	Headphone jack
Back ports
Back ports	Two Apple Desktop Bus ports, two serial ports, external SCSI, video, audio input and output; Apple AUI Ethernet was optional	DB-15 monitor output, Apple Desktop Bus, external DB-25 SCSI, two serial connectors, microphone input and stereo sound output
Speakers
Speakers	Built-in mono speaker with stereo audio output jack	–