Apple Power Mac G4 (Mirrored Drive Doors 2003) vs Apple Power Macintosh 6100/66 DOS Compatible

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Power Mac G4 (Mirrored Drive Doors 2003) compared with Power Macintosh 6100/66 DOS Compatible

	ApplePower Mac G4 (Mirrored Drive Doors 2003)	ApplePower Macintosh 6100/66 DOS Compatible
Overview
Released
Released	June 2003	1995
Performance
Processor
Processor	PowerPC G4 1250 MHz (Power Mac MDD 2003) or 2 × PowerPC G4 1250 MHz (Power Mac MDD 2003)	PowerPC 601 66 MHz (Power Macintosh 6100/66)
CPU cores
CPU cores	1 or 2	1
Graphics
Graphics	ATI Radeon 9000 Pro (64 MB)	–
Memory
Memory	256 MB or 2 GB (better)	16 MB
Storage
Storage	80 GB (better)	500 MB
CPU
CPU	Stock single 1.25 GHz PowerPC G4 with 256 KB L2 cache and 1 MB L3 cache. Contemporary Macworld reporting of Apple Store configurations also documents dual 1.25 GHz processors, each with 2 MB L3; this custom build is labelled in configuration details rather than presented as a second stock base.	Macintosh side uses a 66 MHz PowerPC 601 with integrated FPU and PMMU, 32 KB L1 cache, 256 KB L2 cache and a 64-bit data path at 33 MHz. The separate Intel 80486DX2-66 on the DOS Compatibility Card runs at 66 MHz with a 33 MHz bus and 8 KB internal cache; it runs PC applications independently, rather than adding a second PowerPC core. The main processor comparison describes the Macintosh processor only.
GPU
GPU	Stock ATI Radeon 9000 Pro with 64 MB DDR in an AGP 4x slot. Macworld also documents a custom dual-processor build with NVIDIA GeForce4 Titanium; that build has other upgrades and is not treated as a freely interchangeable stock configuration.	Macintosh HDI-45 video uses system DRAM. The DOS card has separate 512 KB video RAM and a VGA controller; Sound Blaster-compatible 16-bit stereo playback is mixed with Macintosh and CD audio. PC sound hardware provides output only, while Macintosh audio has input and output.
Memory type
Memory type	Stock 256 MB PC2700 DDR333; four DIMM slots, maximum 2 GB. The single-processor configurations retain the stock drive and graphics at base and maximum memory. The documented dual-processor custom base has 256 MB.	8 MB on the Macintosh logic board and two 72-pin SIMM slots installed in pairs; maximum supported Macintosh RAM 72 MB. The DOS card can share selected Macintosh memory or use its own single 72-pin SIMM up to 32 MB; PC-local memory is not additional Macintosh RAM. AppleFacts also lists 8 MB system memory, but the shown 16 MB/500 MB factory configuration is explicitly ordered as M3972LL/A in Apple's TIL 16756.
Storage type
Storage type	Stock 80 GB 7200 rpm Ultra ATA/100 hard drive; up to four internal drives. Tray-loading Combo drive reads DVD at 8x and CD at 32x, writes CD-R at 16x and CD-RW at 10x. Macworld documents a dual 1.25 GHz custom base with 80 GB, Combo drive and Radeon 9000 Pro, and a separate upgraded build with 2 GB RAM, two 160 GB drives, SuperDrive and GeForce4 Titanium. The two-drive build is described here without flattening its drives into a single capacity.	M3972LL/A has a 500 MB internal hard drive, plus built-in 1.44 MB Apple SuperDrive floppy; optional double-speed CD-ROM reads Macintosh and DOS discs. Exact current support gives a broader 350–500 MB range; the initial January newsletter anticipated 16 MB/350 MB before final availability, so that prospective configuration is not added. DOS drive files reside on the Macintosh hard drive.
Expansion slots
Expansion slots	Four PCI slots and an occupied AGP 4x graphics slot.	The sole processor-direct expansion position is occupied by the DOS Compatibility Card and its adapter; AV and NuBus expansion cannot coexist in that position. The PC processor card has a local-memory SIMM socket and sound expansion card.
Display
Screen
Screen	None built in	None built in
Connections
Ports
Ports	2 × USB-A, Ethernet, headphone jack	Ethernet
External displays
External displays	–	Up to 2
Ethernet
Ethernet	1 Gb/s	–
Front ports
Front ports	Headphone connection and built-in mono speaker.	–
Back ports
Back ports	Two USB 1.1, two FireWire 400, Gigabit Ethernet with Auto-MDIX, ADC and DVI display connectors, audio line-in/out and Apple Pro Speakers connection. The maker lists a V.92 modem. Optional original AirPort; the contemporary Apple-spokesman report confirms no AirPort Extreme, internal Bluetooth or FireWire 800.	ADB, HDI-45 Macintosh display output, DB-25 external SCSI, two GeoPort serial ports, AAUI Ethernet, microphone input and speaker output. The DOS card's 26-pin connection uses a monitor adapter cable with display and PC joystick connectors. Macintosh serial and printer interfaces can emulate PC connections, with compatibility limits in the developer guide.
External displays
External displays	ADC and DVI connectors with included DVI-to-VGA adapter. Digital resolution up to 1920 × 1200; analogue up to 1600 × 1200. The exact sheet does not publish a simultaneous display count.	One shared display or two separate simultaneous Macintosh and PC displays; only one environment receives keyboard and mouse input at a time. Macintosh video supports 512 × 384 and 640 × 480 at 16-bit colour, or 832 × 624 at 8-bit. DOS card supports VGA/SVGA displays; the developer note lists shared VGA 640 × 480 and SVGA 800 × 600 monitors. Depth and supported modes depend on environment and driver.
Speakers
Speakers	Built-in mono speaker and connection for Apple Pro Speakers; no built-in microphone.	–
Keyboard and mouse
Keyboard and mouse	Black Apple Pro input devices and DVI-to-VGA adapter.	Apple's DOS-card specification lists the compatibility card, MS-DOS 6.22 manual and disks, Windows 3.1, Macintosh PC Exchange User's Guide and monitor cable. Gallery monitor, keyboard and mouse illustrate the original maker setup and do not establish a universal factory bundle.
Design and power
Type
Type	Tower	Compact
Weight
Weight	19.1 kg	–
Width × depth × height
Width × depth × height	226 × 467 × 432 mm	414 × 396 × 86 mm
Operating system
Operating system	macOS	macOS
Size and weight detail
Size and weight detail	Maker dimensions: height 43.2 cm, width 22.6 cm, depth 46.7 cm; weight 19.1 kg. These published metric values differ slightly from the FW800 sheet.	Original AppleFacts gives 86 × 414 × 396 mm (height × width × depth), used here. Exact support gives 3.4 × 16.3 × 15.6 inches and 14 lb; shared service manual gives 85 × 415 × 399 mm and 6.4 kg depending on installed devices. AppleFacts prints inconsistent 16.2 lb and 3.3 kg; headline weight omitted rather than resolving that conflict by guessing.
Power supply
Power supply	–	Exact support lists 210 W maximum and automatically configured 100–240 V AC, 50–60 Hz. Shared-family Service Source separately gives 132 W maximum continuous AC input, 201 W peak input excluding monitor power, and 86 W continuous DC output; these ratings retain their different conditions.
In the box
In the box	Mac OS X 10.2.4 and bootable Mac OS 9.2.2, install/restore DVD and Apple Hardware Test. First sale uses the 23 June 2003 Macworld report that these models were for sale at Apple’s online store; a 29 June report quotes an Apple spokesman confirming manufacture and sale. The first day is contemporary Apple Store reporting rather than a retained maker launch notice.	Original System 7.5 with PowerPC Enabler 1.1.1, MS-DOS 6.22 and Windows 3.1. Apple support records introduction on 3 January 1995; January Apple Directions only promises first-quarter shipments. April 1995 AppleFacts lists the current product and the contemporary June TidBITS review describes a purchased unit, establishing sale in 1995 without proving the first-sale month. Apple explicitly calls the earlier Quadra 610 DOS Compatible its predecessor.