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Apple Macintosh Centris 650 vs Apple Macintosh LC III+

Every spec side by side, from each maker's published figures.

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AppleMacintosh Centris 650AppleMacintosh LC III+
Overview
Released1993–
Performance
ProcessorMotorola 68040 25 MHz (Macintosh Centris 650) or Motorola 68LC040 25 MHz (Macintosh Centris 650)68030 33 MHz (Macintosh LC III+)
CPU cores11
Memory4 MB4 MB
CPU25 MHz Motorola 68040 or 68LC040; the latter has no floating-point unitMotorola 68030 at 33 MHz with integrated memory management and 32-bit data path; optional socketed 68882, 0.5 KB first-level cache and no second-level cache. Apple Service Guide identifies the Performa 460, 466 and 467 as the 33 MHz LC III family; these aliases are not separate product records
GPUBuilt-in video with 512 KB VRAM, expandable to 1 MB; supports an external monitor through a 15-pin video connector512 KB built-in VRAM, expandable to 768 KB with a 256 KB SIMM. A 512 KB VRAM SIMM may be fitted but only 256 KB is used. At 640 × 480 and 832 × 624, standard memory supports 8-bit colour; upgraded VRAM supports 16-bit colour
Memory type4 or 8 MB minimum RAM depending on configuration, with four SIMM slots; up to 136 MB4 MB soldered RAM plus one 72-pin SIMM socket, maximum 36 MB. Apple specifies 80 ns minimum memory speed and SIMM capacities 1, 2, 4, 8, 16 or 32 MB. 1 MB ROM
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 LC III+ support lists 80–160 MB internal SCSI hard disks and an automatic-inject 1.44 MB floppy drive. Exact original RAM/drive configuration pairing is unresolved, so structured storage capacity is omitted. Apple July 1994 Service Guide gives conflicting 80 MB and 180 MB values for Performa 460 in different tables; those are not silently assigned to this model. Performa 460-series bundles use a manual-insert SuperDrive
Expansion slotsThree NuBus slots and one processor-direct slot; a PDS card occupies the position of one NuBus cardOne LC III processor-direct expansion slot. Ethernet requires an expansion card; no built-in Ethernet
Display
ScreenNone built inNone built in
Design and power
TypeCompactCompact
Width × depth × height330 × 419 × 152 mm–
Operating systemmacOSmacOS
Size and weight detail–Apple LC III+ record publishes 8.8 lb and 2.9 inches high × 12.2 inches wide × 15.3 inches deep. Unpublished metric measurements are omitted
Power supply–Apple LC III+ support lists 100–240 V, 47–63 Hz, 50 W maximum, 0.42 A and 171 BTU/hour. These are maker ratings, not measured consumption. 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 7.1 with System Enabler 003 v1.1. Apple introduction date 18 October 1993 is not established as an actual first retail sale, so released is omitted
Connections
Ports–Headphone jack
Back portsTwo Apple Desktop Bus ports, two serial ports, external SCSI, video, audio input and output; Apple AUI Ethernet was optionalOne ADB, DB-15 video, DB-25 SCSI, printer and modem serial ports, omnidirectional microphone input and speaker output. No external floppy connector
External displays–Separate monitor required. Apple specifies 512 × 384 and 640 × 400 at 16-bit colour, plus 640 × 480 and 832 × 624 with colour depth depending on VRAM capacity
Keyboard and mouse–Performa 460-series bundles include an ADB keyboard and mouse and may include a monitor and modem; the museum photo shows the Performa 460-labelled computer alone. Exact LC III+ supplied-accessory bundle is unpublished in the recovered support record
SpeakersBuilt-in mono speaker with stereo audio output jack–

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