The table below describes the differences and similarities among the Power Macintosh 6400, 5400, 6500, 5500, and 4400 series computers.
IMPORTANT: This chart reflects Power Macintosh models available in the US ONLY.
Power Macintosh model
+==========+==========+==========+==========+============
Features |6400 |5400 |6500 |5500 |4400
================+==========+==========+==========+==========+============
Processor Type |PowerPC |PowerPC |PowerPC |PowerPC |PowerPC
|603e |603e |603e |603e |603e
----------------+----------+----------+----------+----------+------------
Processor Speed |180,200 |120,180 |225, 250 |225 |200
----------------+----------+----------+----------+----------+------------
Cache | 256K | 256K | 256K | 256K | 256K
|level-2 |level-2 |level-2 |level-2 |level-2
|cache |cache |cache |cache |cache
----------------+----------+----------+----------+----------+------------
RAM |16-136 MB |16-136 MB |16-128 MB |16-128 MB |0-160 MB
Configurations |8 MB on |8 MB on |0 MB on |0 MB on |0 MB on
|logic |logic |logic |logic |logic
|board |board |board |board |board
----------------+----------+----------+----------+----------+------------
RAM expansion |2 DIMM |2 DIMM |2 DIMM |2 DIMM |3 DIMM
|slots |slots |slots |slots |slots
|168-pin 5-|168-pin 5-|168-pin 5-|168-pin 5-|168-pin 3.3
|volt fast-|volt fast-|volt |volt |volt EDO
|paged DIMM|paged DIMM|EDO DIMMs |EDO DIMMs |DIMMs
----------------+----------+----------+----------+----------+------------
System bus | 64 bits | 64 bits | 64 bits | 64 bits | 64 bits
| 40 MHz | 40 MHz | 50 MHz | 50 MHz | 40 MHz
----------------+----------+----------+----------+----------+------------
Video RAM |1 MB DRAM |1 MB DRAM |2 MB SGRAM|2 MB SGRAM|1-4 MB EDO
| | | | |DRAM,SDRAM,
| | | | |or SGRAM
----------------+----------+----------+----------+----------+------------
Video Input |Optional card for video input, capture, |Third-party
|overlay. Included with some configurations.|PCI card
|Apple Video System |
----------------+----------+----------+----------+----------+------------
Graphics | None | None |2D and 3D |2D and 3D |2D
Acceleration | | |hardware |hardware |hardware
----------------+----------+----------+----------+----------+------------
Sound | 8 or 16 bits/channel stereo in, stereo out|8 or 16 bits/
|SRS surround-sound mode |channel
| |stereo in,
| |stereo out
----------------+----------+----------+----------+----------+------------
Remote control |Built-in IR receiver for optional TV/FM |None
|tuner card |
----------------+----------+----------+----------+----------+------------
Form Factor |Tower |All-in-one|Tower |All-in-one|Modular
----------------+----------+----------+----------+----------+------------
Floppy disk | 1, internal
drive |
----------------+----------+----------+----------+----------+------------
Zip drive | Some | None |1,internal| None | None
| models | | | |
----------------+----------+----------+----------+----------+------------
ADB ports | 1
----------------+----------+----------+----------+----------+------------
Internal hard | 1 (IDE)
disk
----------------+----------+----------+----------+----------+------------
Size of internal|1.6 or 1.4| 1.6 GB |2.0 or 3.0| 2.0 GB | 1.2 GB
hard disk | GB | | GB | |
----------------+----------+----------+----------+----------+------------
Internal CD-ROM |1,8x-speed|1,4x or 8x|1,12x- |1, 12x- |1,8x-speed
| SCSI | SCSI |speed SCSI|speed SCSI| ATAPI
----------------+----------+----------+----------+----------+------------
Internal SCSI |1, for one| None |1, for one| None | None
expansion bay |5.25-inch | |5.25-inch | |
|device | |device | |
----------------+----------+----------+----------+----------+------------
External SCSI | 1
----------------+----------+----------+----------+----------+------------
Communications | 1, for optional modem or Ethernet configuration
slot |
----------------+----------+----------+----------+----------+------------
Expansion slot |2 PCI |1 PCI slot|2 PCI |1 PCI slot|2 PCI
|slots for |for 7-inch|slots for |for 7-inch|slots. One
|7-inch |cards |7-inch |cards |for 7-inch
|cards | |cards | |cards. One
| | | | |for 12-inch
| | | | |cards.
----------------+----------+----------+----------+----------+------------
DMA I/O | 10 DMA channels
----------------+----------+----------+----------+----------+------------
Serial ports | 2, LocalTalk and Geoport supported
----------------+----------+----------+----------+----------+------------