 | Introduced: October 18, 1993 Terminated: April 1, 1996 |
Logic Board
Processor: 68LC040
Processor Speed: 25 MHz
- The clock input runs at 50 MHz; however, the processor itself is clocked at 25 MHz, so technically it is only a 25 MHz processor.
PMMU: Integrated
FPU: none
Bus Speed: 25 MHz
Data Path: 32-bit
ROM Size: 1 MB
Level 1 Cache: 8K
Level 2 Cache: none
Expansion Slots: 1 LC PDS
Battery: 3.6V Lithium
Memory
RAM Type: 72-pin SIMM
RAM Slots: 1
Min – Max RAM: 4 MB – 36 MB
Minimum RAM Speed: 80 ns
Install in groups of: 1
RAM Sizes: 1, 2, 4, 8, 16, 32 MB
Onboard RAM: 4 MB
Ports
ADB: 1
USB: none
FireWire: none
Video: DB-15
Floppy: none
SCSI: DB-25
Geoports: none
Ethernet: none
Mic Type: PlainTalk
Other ports: Printer, modem, speaker
Video
Standard VRAM: 512K (2 x 256K)
Maximum VRAM: 1 MB (2 x 512K)
Display Resolution:
- 512 x 384, 16-bit (2 x 256K), 16-bit (2 x 512K)
- 640 x 480, 8-bit (2 x 256K), 16-bit (2 x 512K)
- 832 x 624, 8-bit (2 x 256K), 16-bit (2 x 512K)
- 1024 x 768, 4-bit (2 x 256K), 8-bit (2 x 512K)
- 1152 x 870, 4-bit (2 x 256K), 8-bit (2 x 512K)
Storage
Standard CD-ROM: none
Internal Hard Drive: SCSI (160 – 230 MB)
Floppy Disk Drive: 1.44 MB manual
Operating System
Addressing Modes: 24-bit or 32-bit
Original OS: 7.1P3
Original Enabler: System Enabler 364
AppleTalk Version: 57.0.4
Compatible MacOS:
7.1P3
7.1P5
7.1P6
7.5
7.5.1
7.5.3
7.5.5
7.6
7.6.1
8.0
8.1
Miscellaneous
Macintosh Counterpart: Macintosh Quadra 605 or Macintosh LC 475
Form Factor: LC
Dimensions (Inches): 2.9 H x 12.2 W x 15.3 D
Average Weight (lbs): 8.8
Gestalt ID: 89
Original Price: $1600 US
Comments
The education version of the Performa 475 was the Macintosh LC 475. The business version of the Performa 475 was the Macintosh Quadra 605.