Apple Power Macintosh 5500/225 vs Apple Power Macintosh 5500/250

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Power Macintosh 5500/225 compared with Power Macintosh 5500/250

	ApplePower Macintosh 5500/225	ApplePower Macintosh 5500/250
Overview
Released
Released	1997	1997
Performance
Processor
Processor	PowerPC 603e 225 MHz (Power Macintosh 5500)	PowerPC 603e 250 MHz (Power Macintosh 5500)
CPU cores
CPU cores	1	1
Memory
Memory	16 MB or 32 MB	32 MB
Storage
Storage	2 GB to 4 GB	2 GB to 4 GB
CPU
CPU	225 MHz PowerPC 603e with integrated floating-point unit, 32 KB L1 cache, 256 KB L2 cache and 64-bit 50 MHz system bus.	250 MHz PowerPC 603e with integrated floating-point unit, 32 KB L1 cache, 256 KB L2 cache and 64-bit 50 MHz system bus. This is a distinct clock configuration from the 5500/225.
GPU
GPU	2 MB built-in SGRAM with hardware 2D and 3D acceleration, including QuickDraw 3D, video capture and QuickTime/MPEG-1 playback. Exact education brochure specifies 24-bit colour through 832 × 624 and 16-bit colour through 1024 × 768. Exact support and shared service tables also list 1152 × 870 at 16-bit and 1280 × 1024 at 8-bit; the brochure does not establish these as built-in CRT modes, so its documented 1024 × 768 display mode is retained as the headline. Display resolution can be changed in software; the CRT has no fixed pixel matrix.	2 MB built-in SGRAM with hardware 2D and 3D acceleration. Exact support table gives 24-bit colour through 832 × 624, 16-bit through 1152 × 870 and 8-bit at 1280 × 1024. The Australian brochure explicitly specifies the built-in display up to 1024 × 768 with 16-bit colour, but its separate Display support subsection incorrectly repeats a 1 MB/8-bit at 832 × 624 table resembling the earlier 5400; that inconsistent subsection is not used. The exact service table confirms 2 MB SGRAM and accelerated graphics.
Memory type
Memory type	US education ordering model M5761LL/A has 32 MB RAM; the shared service manual also documents 16 MB configurations sold worldwide. No system RAM is soldered on the logic board. Two 168-pin DIMM slots support up to 128 MB with 5 V, 60 ns or faster EDO DIMMs; the brochure specifies noncomposite modules with 1K or 2K refresh. The service manual supports both fast-page and EDO DIMMs, noting that mixing them can use fast-page timings.	32 MB RAM in the exact Australian brochure and support specification, with no soldered system memory; two 168-pin DIMM sockets permit up to 128 MB. Shared Service Source specifies 60 ns or faster, 5 V buffered EDO DIMMs and supports fast-page modules too; mixing types can operate at fast-page timings.
Storage type
Storage type	Exact US education brochure specifies a 2 GB IDE hard drive, 12× CD-ROM and 1.44 MB SuperDrive floppy. Exact support and shared service document 24× optical configurations too. Later US education configurations have 32 MB/24× and Mac OS 8.0; Europe has 32 MB/2 GB/24× with a 33.6 Kbit/s modem, while Japan has 32 MB/4 GB/24× with the same modem and Mac OS 8.0.	April 1997 Australian brochure specifies a graphite 32 MB/4 GB IDE/12× CD-ROM configuration. Exact support database instead lists 2 GB minimum and 24× CD-ROM. Shared Service Source documents later graphite Japanese/Australian 32 MB/4 GB/24× configurations with video input, 33.6 Kbit/s modem and Mac OS 8.0, and a US education 32 MB/24× configuration with video input, NTSC output and Ethernet. The later January 1998 family catalogue lists 2 GB and 12× or 24× drives. All retain a 1.44 MB SuperDrive floppy; optical-drive and bundle conditions are kept explicit.
Expansion slots
Expansion slots	One PCI 2.0 expansion slot for a 7-inch card with a Macintosh driver, Communications Slot II used by the Ethernet card or regional modem, video-input slot and TV/FM tuner bay. The education brochure lists optional Apple TV/FM Radio System and Avid Cinema Video Editing System. The shared service provides a digital-video connector for compatible expansion hardware; it is not compatible with the earlier Quadra 660AV/840AV connector.	One PCI slot for a 6.88-inch, 15 W card with a Macintosh driver, Communications Slot II for modem or Ethernet, video-input slot and optional TV/FM tuner bay. Australian brochure includes video input and lists TV tuner with infrared remote and Avid Cinema card/software as optional. The later US education configuration also supplies NTSC output.
Display
Screen size
Screen size	12.8″	12.8″
Resolution
Resolution	1024 × 768	1024 × 768
Panel
Panel	CRT	CRT
Display type
Display type	Built-in multiple-scan flat-square colour CRT, 15-inch nominal with 12.8-inch diagonal viewable image and 0.28 mm dot pitch. A refresh rate specifically established for the highest brochure-documented built-in mode remains unpublished and is omitted.	Built-in noninterlaced flat-square multiple-scan CRT, 15-inch nominal tube with 325 mm diagonal viewable image (12.8 inches in the January 1998 family catalogue), 0.28 mm dot pitch and software-selectable modes from 640 × 480 to 1024 × 768. Brochure states up to 75 Hz without assigning that maximum to the highest resolution, so headline refresh remains omitted. Base tilts −5° to +15° and swivels 360°.
Connections
Ports
Ports	Headphone jack, Ethernet	Headphone jack
Ethernet
Ethernet	0.01 Gb/s	–
Front ports
Front ports	Headphone output, sound-volume and display controls; infrared receiver for the optional TV/FM remote.	Headphone output, sound-volume and display controls; infrared receiver for the optional TV/FM remote.
Back ports
Back ports	US education brochure and exact support specify 10BASE-T Ethernet, ADB, external DB-25 SCSI, two RS-232/RS-422/LocalTalk/GeoPort-compatible serial ports, PlainTalk-compatible sound input and stereo output. The Ethernet card occupies Communications Slot II; later European and Japanese configurations instead supply a 33.6 Kbit/s modem. Brochure supports six external SCSI devices. Video-input card is included in the education brochure and accepts composite and S-Video; TV/FM tuner and Avid Cinema are optional.	ADB, external DB-25 SCSI, two RS-232/RS-422/LocalTalk/GeoPort-compatible serial ports, PlainTalk-compatible sound input and stereo output. Australian brochure includes a high-speed GeoPort modem without a published rate; later graphite service configurations specify a 33.6 Kbit/s modem. Exact support and US education service configuration list 10BASE-T, while the January 1998 maker catalogue qualifies Ethernet as configuration-dependent. Modem and Ethernet use the same communications slot; no universal Ethernet headline is assigned. Brochure supports six external SCSI devices.
External displays
External displays	US education brochure includes NTSC TV-output capability for a compatible television, VCR or camcorder. Computer-monitor output requires the appropriate external video connector; the shared service documents video mirroring rather than an independent extended desktop. Regional video bundles vary.	January 1998 family catalogue lists NTSC TV output on some configurations; the service manual confirms NTSC output in the US education 250 MHz bundle. Australian brochure establishes built-in video input but does not establish included TV output. Computer-monitor video mirroring needs the appropriate external connector; do not treat an optional connector as included.
Speakers
Speakers	Built-in stereo speakers, 16-bit stereo sound input/output and SRS 3D surround processing, with rear stereo speaker output.	Built-in stereo speakers, 16-bit stereo sound input/output and SRS 3D surround processing, with rear stereo speaker output.
Microphones
Microphones	Built-in microphone; PlainTalk-compatible external sound input.	Built-in microphone; PlainTalk-compatible external sound input.
Keyboard and mouse
Keyboard and mouse	Exact M5761LL/A education brochure includes AppleDesign Keyboard, ADB Mouse II, 32 MB RAM, 2 GB drive, 12× CD-ROM, internet-access software and setup/reference documentation. Video-input and NTSC TV-output hardware are included in this education presentation; TV/FM tuner and Avid Cinema are optional. Exact photographs show the beige 225 MHz model with keyboard/mouse; later international bundles differ.	April 1997 Australian graphite presentation includes matching keyboard, mouse and necessary cables, built-in video-in card, high-speed modem, Apple System 7.5 software and a regional productivity, reference, education and game bundle. Internet service fees are additional. TV tuner/remote and Avid Cinema are optional. Later US education and international Mac OS 8.0 bundles vary; gallery shows the beige family education configuration, unlike the graphite primary.
Design and power
Type
Type	All-in-one	All-in-one
Weight
Weight	21 kg	21 kg
Width × depth × height
Width × depth × height	383 × 406 × 445 mm	383 × 406 × 445 mm
Operating system
Operating system	macOS	macOS
Size and weight detail
Size and weight detail	Exact education brochure gives 44.5 × 38.3 × 40.6 cm (height × width × depth), 21 kg / 47 lb; support database agrees with these inch dimensions and 47 lb. AppleFacts August 1997 second page instead prints tower-like 40.6 × 19.8 × 42.9 cm and 20 kg, inconsistent with its all-in-one identity. The shared service swaps width/depth and prints inconsistent pound weights. Brochure complete-unit measurements are retained, with weight varying by installed devices.	Australian exact brochure gives 44.5 × 38.3 × 40.6 cm (height × width × depth) and 21 kg / 47 lb. Exact support dimensions and January 1998 family catalogue agree. Weight varies with installed internal devices. Shared service physical table swaps width/depth and prints inconsistent pound/kilogram weights; the exact brochure measurements are used.
Power supply
Power supply	Exact support specifies 220 W maximum, 110–240 V AC at 50–60 Hz. The original education brochure separately lists 150 W maximum excluding the display, 110/220 V and 47–63 Hz. Shared service lists 125 W and 220 W maximum for all line/load conditions; these differently qualified ratings are not treated as measured operating consumption.	Exact support and Australian brochure specify 220 W maximum continuous, 110–240 V AC at 50–60 Hz; includes low-power sleep mode. Shared Service Source lists a separate 125 W entry and 220 W maximum for all line/load conditions. No value is treated as measured operating consumption.
Noise
Noise	Variable-speed fan automatically runs at the lowest speed needed to minimise noise; the processor also has a small cooling fan. No acoustic measurement is published in these sources.	Variable-speed fan automatically runs at the lowest speed needed to minimise noise; the processor also has a small cooling fan. No acoustic measurement is published in these sources.
In the box
In the box	Exact support lists original System 7.5.5 and Enabler 411; education brochure lists Mac OS 7.6 or later and describes Mac OS 7.6.1 software, while later service configurations use Mac OS 8.0. Apple records introduction on 17 February 1997, but the August 1997 current ordering brochure and catalogue establish sale only at year precision in this record. Actual first-sale month remains unresolved. Energy Saver schedules sleep, starting up and shutdown.	April 1997 Australian maker brochure presents the 250 MHz graphite computer as a ready-to-use product and directs buyers to authorised resellers. Exact support later records introduction on 1 September 1997, while the Australian brochure predates that regional/configuration entry. Retail year 1997 is supported by the contemporary Australian sales brochure; exact first-sale month is unresolved. Exact support lists System 7.5.5 with Enabler 411; later shared service configurations use Mac OS 8.0.