Apple Macintosh Centris 610 vs Apple Macintosh Quadra 610

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Macintosh Centris 610 compared with Macintosh Quadra 610

	AppleMacintosh Centris 610	AppleMacintosh Quadra 610
Overview
Released
Released	1993	1993
Performance
Processor
Processor	Motorola 68LC040 20 MHz (Macintosh Centris 610)	Motorola 68040 25 MHz (Macintosh Centris 650)
CPU cores
CPU cores	1	1
Memory
Memory	4 MB	8 MB (better)
Storage
Storage	80 MB	160 MB to 230 MB (better)
CPU
CPU	20 MHz Motorola 68LC040 with integrated memory management unit and 8 KB L1 cache, but no floating-point unit	25 MHz Motorola MC68040 with integrated FPU and memory management unit, 32-bit data bus and 8 KB cache on the datasheet/catalogue configurations listed here. Apple developer note confirms an entry-level MC68LC040 version without FPU, plus socketed processors; its exact RAM/storage pairing has not been established in maker ordering tables and is not invented here. DOS Compatible hardware and later PowerPC upgrades are separate options
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	512 KB VRAM standard, upgradable to 1 MB. At 640 × 480, 512 KB gives 256 colours and 1 MB gives 32,000 colours; at 1152 × 870, 16 shades with 512 KB and 256 with 1 MB. The 8/230CD configuration includes 1 MB VRAM
Memory type
Memory type	4 MB on the logic board with two 72-pin SIMM slots, expandable to 68 MB	4 MB DRAM on the logic board plus two 72-pin SIMM slots; 8 MB supplied in the maker catalogue configurations. Up to 68 MB total; 80 ns or faster SIMMs can be installed individually. 1 MB ROM
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	1.44 MB Apple SuperDrive with enlarged manual-insertion slot, replacing the Centris automatic-injection design. Maker ordering offers 8/160 with hard disk and no CD-ROM, or 8/230CD with 230 MB SCSI hard disk and AppleCD 300i double-speed drive
Expansion slots
Expansion slots	One expansion position for either a seven-inch NuBus card or a processor-direct-slot card, using the appropriate adapter	One internal slot accepts either a processor-direct card or a seven-inch NuBus card with the required adapter. Internal bay for optional 5.25-inch half-height storage device; not a full-length NuBus chassis
Display
Screen
Screen	None built in	None built in
Design and power
Type
Type	Compact	Compact
Weight
Weight	–	6.4 kg
Width × depth × height
Width × depth × height	415 × 397 × 85 mm	415 × 397 × 85 mm
Operating system
Operating system	macOS	macOS
Size and weight detail
Size and weight detail	Apple lists a weight of 14 lb	Exact datasheet metric dimensions retained: H8.5/W41.5/D39.7 cm; 6.4 kg varies with internal devices. Shared Service Source incorrectly prints depth4.2in/107mm; exact datasheet and archived support agree15.6in depth
Power supply
Power supply	–	100–240 V AC with automatic configuration; exact datasheet gives 50–60 Hz and 210 W maximum excluding monitor. Shared Service Source lists 112 W excluding monitor; preserve the source disagreement rather than treat either as measured running consumption. 3.6 V lithium clock battery
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.	System 7.1 with System Enabler 040 v1.1 per archived maker specifications. Apple introduction is21October1993, not adopted as first-sale day. Fall1993 maker catalogue offers ordering and a promotion through31December1993, supporting sold during1993; exact first-delivery month remains unconfirmed
Connections
Ports
Ports	–	Headphone jack
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 ADB, two RS-232/RS-422 serial mini-DIN-8, DB-25 SCSI, DB-15 video, mono sound input and stereo-capable sound output. AAUI-15 Ethernet included on the datasheet/catalogue versions; optional across the wider family and absent from the entry-level version. No USB or external floppy connector
External displays
External displays	–	Maker lists built-in support for Apple displays and compatible RGB/VGA/SVGA displays. Separate monitor and keyboard; catalogue setup image shows Macintosh Color Display and Apple Extended Keyboard II as separately ordered options
Speakers
Speakers	Built-in mono speaker with stereo audio output	Built-in mono speaker; stereo eight-bit sound chip supports external stereo headphones/equipment. Eight-bit monophonic sound input sampled at 11 or 22 kHz
Keyboard and mouse
Keyboard and mouse	–	Mouse, software and documentation in maker ordering list; monitor and keyboard ordered separately