Apple Macintosh LC 630 DOS Compatible vs Apple Macintosh Quadra 610 DOS Compatible

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Macintosh LC 630 DOS Compatible compared with Macintosh Quadra 610 DOS Compatible

	AppleMacintosh LC 630 DOS Compatible	AppleMacintosh Quadra 610 DOS Compatible
Overview
Released
Released	–	March 1994
Performance
Processor
Processor	68LC040 33 MHz (Macintosh LC 630 DOS Compatible)	Motorola 68LC040 25 MHz (Macintosh Quadra 610 DOS Compatible)
CPU cores
CPU cores	1	1
Memory
Memory	8 MB	8 MB
Storage
Storage	500 MB (better)	160 MB
CPU
CPU	Macintosh 68LC040, with 66/33 MHz clock notation: CPU execution and bus at 33 MHz, doubled internal clock at 66 MHz. AppleFacts April 1995 and the later Apple Memory Guide identify 68LC040; the LC 630 DOS technical booklet and shared Service Source instead print 68040 and the booklet claims an FPU. That disagreement is retained rather than assuming a standard Macintosh FPU. The separate DOS card contains a 66 MHz Cyrix Cx486DX2 or Intel 80486DX2, both explicitly supported by the exact developer note; this is not a pair of matching Macintosh CPUs	Original Apple TIL 14670, 13884 and shared Service Source identify a 25 MHz Motorola 68LC040 for Macintosh applications and a separate 25 MHz Intel 486SX on the DOS card, both with 32-bit data paths. The 68LC040 has a built-in memory management unit and no FPU; neither processor is the full-FPU 68040 or 486DX. Current support uses generic 68040/optional-FPU wording; this factory configuration follows the exact original documentation. Main processor comparisons describe the Macintosh CPU, not two identical processors.
GPU
GPU	Macintosh video uses a fixed 1 MB DRAM frame buffer with no video-memory expansion. DOS card has separate 512 KB DRAM and VGA controller. PC environment supports VGA 640 × 480 and SVGA 800 × 600 plus legacy EGA/CGA/MDA. Shared-display colour modes and resolution depend on environment and driver	Macintosh video has 512 KB VRAM expandable to 1 MB; the DOS card has separate 512 KB video memory. At Macintosh 640 × 480, base VRAM gives 8-bit colour and expanded VRAM 16-bit; at 1152 × 870 these are 4-bit and 8-bit respectively. PC video supports compatible VGA/SVGA and Apple displays with its cable.
Memory type
Memory type	8 MB Macintosh RAM: 4 MB soldered and a 4 MB SIMM, with two 72-pin 80 ns SIMM sockets. Maximum 52 MB on the main logic board using 32 MB and 16 MB SIMMs; the second socket accepts 1, 4 or 16 MB. PC card has its own 4 MB 72-pin SIMM, expandable to 32 MB, or can use a selected portion of Macintosh RAM; those independent pools are not added to the headline Macintosh RAM	Factory 8 MB Macintosh RAM, with 4 MB on the logic board and two 72-pin SIMM sockets; maximum supported Macintosh RAM 68 MB. DOS card can use shared Macintosh memory up to 64 MB or one 80 ns 72-pin SIMM up to 32 MB of PC-local memory. Current support and corrected TIL 14670 agree on 32 MB local maximum; the shared service manual says 64 MB and earlier descriptive TIL 13884 says 100 MB total, so those conflicting claims are not used as headline Macintosh capacity.
Storage type
Storage type	Original AppleFacts configuration includes 500 MB IDE hard disk, manual-insert 1.4 MB SuperDrive and internal CD-ROM. Shared Service Source identifies double-speed AppleCD 300i Plus; the exact technical booklet also permits a configuration without the CD-ROM drive. Internal IDE and external SCSI are separate interfaces; no internal SCSI drive inferred	The May 1994 Apple Directions factory offering is 8 MB RAM and 160 MB internal hard disk; the generic current support range 160–230 MB does not establish another exact factory memory/storage pair. Built-in 1.44 MB Apple SuperDrive floppy and optional double-speed internal CD-ROM support Macintosh and DOS discs. The optional CD is shown in the shared-family maker photograph.
Expansion slots
Expansion slots	DOS hardware occupies the Macintosh processor socket and LC-compatible PDS. Separate communications slot accepts optional modem or Ethernet; video-input slot and TV-tuner connector remain available. Original main DOS board, sound daughterboard and game-adaptor board are distinct components. Performa 630/640 DOS Compatible bundles use this family design; ordinary LC 630 and Quadra 630 are separate records	Processor-direct slot occupied by DOS Compatibility Card, leaving no free PDS or NuBus position while retaining it. The card is also sold as an internal upgrade for existing Macintosh Quadra 610 and Centris 610 computers; it is distinct from the faster Power Macintosh 6100 DOS card.
Display
Screen
Screen	None built in	None built in
Connections
Ports
Ports	2 × headphone jack	Ethernet, headphone jack
External displays
External displays	–	Up to 2
Front ports
Front ports	Stereo headphone jack and volume push buttons; optional infrared remote control. Keyboard soft power supported	–
Back ports
Back ports	One ADB, DB-15 monitor, DB-25 external SCSI, two mini-DIN-8 RS-232/RS-422 serial ports, sound input and rear sound output. DOS adaptor adds a DB-15 PC game-controller connector. Supports up to six external SCSI devices; no built-in Ethernet	Two ADB ports, DB-15 Macintosh video, DB-25 external SCSI supporting up to six peripherals, two RS-232/RS-422 serial mini-DIN-8 connections, AAUI Ethernet, monaural microphone input and stereo-capable sound output. PC game port also available through DOS hardware.
External displays
External displays	Separate compatible display needed. Macintosh output supports 640 × 480 at 16-bit colour and 800 × 600 at 8-bit; exact developer note describes a single shared monitor and environment switching. Original AppleFacts staged setup photographs include an external Apple monitor and keyboard/mouse; pictured accessories are not included in the computer dimensions or weight	One shared display switched between environments, or separate Macintosh and PC displays showing both simultaneously. The second display serves the PC environment; do not imply a two-screen Macintosh desktop. Compatible Apple 13-, 14- and 16-inch monitors and VGA/SVGA displays in DOS; Macintosh supports its own wider display list. Adapters may be required.
Speakers
Speakers	Macintosh sound input is 8-bit mono; output 8-bit stereo or 16-bit stereo CD playback. Built-in speaker is muted by either sound-output jack. Included Sound Blaster 16-compatible PC sound card outputs through Macintosh speaker/headphones; the PC environment cannot send or receive serial MIDI according to the exact Apple Read Me	Built-in speaker with Macintosh stereo eight-bit output through the sound jack and eight-bit monophonic input at 11 or 22 kHz. The later Power Macintosh DOS card's Sound Blaster playback is not transferred to this earlier hardware.
Keyboard and mouse
Keyboard and mouse	ADB keyboard and mouse supported; original staged photographs show an external monitor, keyboard and mouse. Performa bundles may include these accessories and software according to their regional configuration; exact LC 630 DOS supplied bundle is not established by the recovered worldwide AppleFacts entry	Apple Directions states MS-DOS 6.2 and Apple PC Exchange are supplied. Separate monitor, keyboard and mouse in the shared-family catalogue photograph are labelled as illustrated accessories rather than a universal bundle. Original Windows software capability does not establish a bundled Windows licence.
Design and power
Type
Type	Compact	Compact
Weight
Weight	8.6 kg	–
Width × depth × height
Width × depth × height	320 × 419.5 × 109.5 mm	414 × 396 × 86 mm
Operating system
Operating system	macOS	macOS
Size and weight detail
Size and weight detail	Exact Apple technical booklet publishes 320 mm wide × 419.5 mm deep × 109.5 mm high. 8.6 kg with CD-ROM, 7.7 kg without; weight varies with installed options. Shared Service Source swaps width/depth labels, so the exact technical booklet dimensions are retained	Exact original DOS-compatible TIL gives 86 × 414 × 396 mm (height × width × depth), used here, and 7.4 kg varying with installed devices. Current support gives 14 lb, and shared Service Source 6.4 kg; weight is omitted because this conflict is unresolved. Shared service depth 107 mm is inconsistent with the exact original 396 mm and current 15.6-inch depth.
Power supply
Power supply	100–240 V AC, 50–60 Hz; 45 W maximum excluding monitor, as published in exact technical booklet and shared Service Source. DOS card 10 W maximum is a subsystem rating, not added to the 45 W headline. Macintosh clock/calendar has a battery	Exact DOS specification gives automatically configured 100–240 V AC, 50–60 Hz and 210 W maximum excluding display power. Current support allows 47–63 Hz; shared-family Service Source gives 112 W excluding monitor. Conditions and maker disagreement remain qualified; neither is a measured normal consumption claim. 3.6 V lithium clock battery.
In the box
In the box	Mac OS and PC environment operate concurrently, with only the active environment receiving input. PC Setup switches environments, shares folders and configures drive-container files. Original AppleFacts identifies MS-DOS 6.2 and Windows 3.1 support. First actual retail sale has not been established from the recovered maker records, so released is omitted	System 7.1 with System Enabler 040 v1.1 and preinstalled MS-DOS 6.2. Current support records introduction on 28 February 1994; May 1994 Apple Directions explicitly says the computer shipped in March in the United States and selected international markets, supporting March 1994 release rather than substituting the introduction date. Apple later explicitly calls this the predecessor to Power Macintosh 6100 DOS Compatible.