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Macintosh Performa 6400: Difference between revisions

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| storage      = 1.6–2.4 GB IDE hard drive, 8X CD-ROM
| storage      = 1.6–2.4 GB IDE hard drive, 8X CD-ROM
| display      = Supports up to 1024×768 @ 8-bit
| display      = Supports up to 1024×768 @ 8-bit
| sound        = SRS 3D surround sound with integrated subwoofer
| sound        = 16-bit stereo in/out with SRS 3D Surround; one mono full-range speaker/subwoofer
| dimensions  = 16.0" H × 7.8" W × 16.9" D (40.6 × 19.8 × 42.9 cm)
| dimensions  = 16.0" H × 7.8" W × 16.9" D (40.6 × 19.8 × 42.9 cm)
| weight      = 44.5 lbs (20.2 kg)
| weight      = 44.5 lbs (20.2 kg)
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All Performa 6400 models use a PowerPC 603ev processor soldered to the logic board and cooled by a fanless heatsink.<ref>{{cite web |url=https://en.wikipedia.org/wiki/Power_Macintosh_6400 |title=Power Macintosh 6400 |publisher=Wikipedia |access-date=2026-02-10}}</ref> The processor is a 32-bit design with a 64-bit data path to main memory.
All Performa 6400 models use a PowerPC 603ev processor soldered to the logic board and cooled by a fanless heatsink.<ref>{{cite web |url=https://en.wikipedia.org/wiki/Power_Macintosh_6400 |title=Power Macintosh 6400 |publisher=Wikipedia |access-date=2026-02-10}}</ref> The processor is a 32-bit design with a 64-bit data path to main memory.


The logic board, codenamed "Alchemy", is shared with the [[Macintosh Power Macintosh 5400|Power Macintosh 5400]] all-in-one and [[Macintosh Performa 6360|Performa 6360]] desktop models. The Alchemy board improved upon its 5200/6200 predecessors by providing a 64-bit data path to main memory.
The logic board, codenamed "Alchemy", is shared with the [[Power Macintosh 5400|Power Macintosh 5400]] all-in-one and [[Macintosh Performa 6360|Performa 6360]] desktop models. The Alchemy board improved upon its 5200/6200 predecessors by providing a 64-bit data path to main memory.


Though initially considered non-upgradable, third-party CPU upgrades became available that overrode the soldered CPU via the L2 cache slot.
Though initially considered non-upgradable, third-party CPU upgrades became available that overrode the soldered CPU via the L2 cache slot.
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! Specification !! Value
! Specification !! Value
|-
|-
| Input Voltage || 100V–125V or 200V–240V AC
| Input voltage || '''90–130 or 180–264 VAC, set manually''' on the rear voltage switch
|-
|-
| Frequency || 47–63 Hz
| Frequency || 47–63 Hz
|-
|-
| Maximum Power || 220 W
| Maximum power || 220 W continuous (Performa/Power Macintosh 6400); 140 W on the 6500
|}
|}


== References ==
== Apple service data ==
<references />
 
Apple's own figures, from the ''Performa/Power Macintosh 6400 and 6500 Series'' Service Source volume
hosted on this wiki.<ref name="ss6400">Apple Computer, ''Performa/Power Macintosh 6400 and 6500 Series'', Service Source. Hosted here as [[Performa/Power Macintosh 6400 and 6500 Series Service Source]] ([[:File:Powermac.perf_6400.6500.pdf]]). Basics, Specifications and Additional Procedures &mdash; Battery Verification chapters.</ref>
 
<templatestyles src="Template:StyledTable/styles.css" />
{| class="wikitable styled-table" style="width:90%;"
! Item !! Apple's figure
|-
| Processor || '''PowerPC 603ev''' throughout: 180 MHz (6400/180, 6410), 200 MHz (6400/200, 6420), 225/250/275/300 MHz (6500)
|-
| Processor bus || 64-bit wide, '''40 MHz''' on the 6400 and '''50 MHz''' on the 6500, supporting split address and data tenures
|-
| DRAM (Performa 6400, 6410, 6420) || 16 MB &mdash; '''the 6420 ships with up to 24 MB''' &mdash; expandable to 136 MB in two sockets, '''168-pin fast-paged mode, 70 ns or faster, 2K refresh'''
|-
| DRAM (Power Macintosh 6400) || 16 MB, expandable to 136 MB, '''168-pin extended data out (EDO), 60 ns or faster, 1K or 2K refresh''' &mdash; not the same part as the Performa takes
|-
| DRAM (6500) || 32 MB (48 MB on some /275, 64 MB on the /300), expandable to '''128 MB''', 168-pin '''5-volt buffered EDO''', 60 ns or faster, 2K refresh
|-
| ROM / PRAM || 4 MB ROM; 8K of non-volatile parameter memory
|-
| VRAM || 1 MB built in on the 6400; '''2 MB of 88 MHz synchronous graphic RAM''' on the 6500
|-
| Level 2 cache || Optional 256K on the 6400, 6410 and 6500/225–250 base; '''standard 256K on the 6420''' and on the 6400/200 with Zip drive; '''standard 512K on the 6500/275 and 6500/300'''
|-
| CD-ROM || '''AppleCD 600i on the 6400''' (4X); AppleCD 1200i 8X on the 6410, 6420 and the 6400/200 with Zip; 12X or 24X on the 6500
|-
| Hard drive || 1.2 GB IDE (6400), 1.6 GB (6410), 2.4 GB (6420 and 6400/200 with Zip), 2 GB (6500/225), 3 or 4 GB (6500/250), 4 or 6 GB (6500/275, /300)
|-
| SCSI || One external port supporting up to '''six''' external devices, or '''five''' if the optional Zip drive is fitted
|-
| Expansion || '''Two''' PCI slots; one communications slot (PCI-bus configuration); a TV/FM tuner port; a video-in slot whose 60-pin DAV connector takes an optional real-time video card, with an adapter cable for backward compatibility with Power Macintosh 5200 DVA cards
|-
| Sound || 16-bit stereo in and out with '''SRS 3D Surround Sound'''; sample rates 11.025, 22.05 and 44.1 kHz; one rear line-level output, one front headphone jack, one stereo input
|-
| Speaker || '''One built-in, full-range, monophonic speaker/subwoofer.''' Stereo comes only from external speakers, headphones or the monitor
|-
| Electrical || '''90–130 or 180–264 VAC, set manually''' by the voltage switch; 47–63 Hz. '''220 W maximum continuous on the 6400; 140 W maximum continuous on the 6500'''
|-
| Case || Height 16 in. (406 mm), width 7 13/16 in. (198 mm), depth 16 7/8 in. (428 mm); '''44.5 lb. (20.18 kg) without CD-ROM'''
|-
| Expansion bay || Configured for '''5.25-inch''' SCSI devices; a 3.5-inch SCSI device fits with a modified carrier
|-
| PRAM battery || On a hook-and-loop base with a pull-up connector. Verify on the 10 V DC scale; '''replace below 3.0 V'''. Apple warns it is a '''lithium''' pack that could explode if mishandled &mdash; neutralise leakage with '''sodium bicarbonate''', never vinegar
|}
 
=== The voltage switch ===
 
'''This machine has a manually set voltage switch and Apple's own wording is that it "must be set
correctly to avoid damaging the computer."''' Insert a screwdriver in the slot and set it to show
'''"115" for supplies between 100 and 130 V''' or '''"230" for supplies between 200 and 270 V'''. Apple
gives the line voltage as '''90–130 or 180–264 VAC configured manually''', at 47–63 Hz &mdash; not a
universal auto-ranging input. Apple's volume also prints a country-by-country voltage table, and notes
that some countries use two standardised voltages.<ref name="ss6400" />
 
=== Things that are not faults ===
 
* '''With external speakers attached the subwoofer works as a bass speaker; without them it produces
  full-range sound instead of just bass.''' The subwoofer balance control only does anything when
  external speakers are connected.<ref name="ss6400" />
* Inserting a plug into '''either''' output jack disconnects the internal speaker, and the rear jack is
  muted when headphones are in the front jack. That is by design.<ref name="ss6400" />


== See Also ==
== See Also ==
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* [[Power Macintosh 6500]]
* [[Power Macintosh 6500]]
* [[Macintosh Performa 6360|Performa 6360]]
* [[Macintosh Performa 6360|Performa 6360]]
* [[Macintosh Power Macintosh 5400|Power Macintosh 5400]]
* [[Power Macintosh 5400|Power Macintosh 5400]]
 
== References ==
 
<references />


[[Category:Apple Vintage Computers]]
[[Category:Apple Vintage Computers]]
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