Apple Macintosh Quadra 610 DOS Compatible vs Apple Power Macintosh 7100/66

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Macintosh Quadra 610 DOS Compatible compared with Power Macintosh 7100/66

	AppleMacintosh Quadra 610 DOS Compatible	ApplePower Macintosh 7100/66
Overview
Released
Released	March 1994	1994
Performance
Processor
Processor	Motorola 68LC040 25 MHz (Macintosh Quadra 610 DOS Compatible)	PowerPC 601 66 MHz (Power Macintosh 7100/66)
CPU cores
CPU cores	1	1
Memory
Memory	8 MB	8 MB
Storage
Storage	160 MB	250 MB to 500 MB (better)
CPU
CPU	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.	66 MHz PowerPC 601 with integrated memory management and floating-point unit, 32 KB L1 cache and 64-bit data path at 33 MHz
GPU
GPU	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.	Built-in HDI-45 video uses system DRAM; separate DB-15 video has 1 MB VRAM standard and supports 2 MB for up to 24-bit colour at 832 × 624
Memory type
Memory type	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.	8 MB on the logic board plus four 72-pin SIMM slots installed in pairs; Apple supports 8–136 MB total
Storage type
Storage type	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.	Internal 1.44 MB floppy drive, 250 or 500 MB SCSI hard drive and optional 2× CD-ROM drive
Expansion slots
Expansion slots	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.	Three NuBus slots; processor-direct slot filled by the video card
Display
Screen
Screen	None built in	None built in
Connections
Ports
Ports	Ethernet, headphone jack	Ethernet
External displays
External displays	Up to 2	–
Back ports
Back ports	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.	Apple Desktop Bus, DB-15 and HDI-45 video, DB-25 SCSI, two GeoPort serial connections, AAUI-15 Ethernet, microphone input and speaker output
External displays
External displays	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.	DB-15 video supports up to 1152 × 870 pixels; available colour depth depends on VRAM
Speakers
Speakers	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	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	–	11.34 kg
Width × depth × height
Width × depth × height	414 × 396 × 86 mm	330 × 419 × 152 mm
Operating system
Operating system	macOS	macOS
Size and weight detail
Size and weight detail	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.	Apple's 6 × 13 × 16.5 inch and 25 lb reference dimensions; metric fields are rounded conversions
Power supply
Power supply	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.	Maximum 230 W; 100–240 V AC, 50–60 Hz; 3.6 V lithium clock battery
In the box
In the box	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.	Original System Software 7.1.2 with PowerPC Enabler. Apple lists 14 March 1994 as introduction; a separate maker first-sale date was not established.