Original iMac (1998)

The original iMac (1998) saw a return to an all-in-one design for the Mac, this time with a translucent blue case that became an instant pop-culture icon.

CPU
CPU: PowerPC 750
CPU Speed: 233 MHz
FPU: integrated
Bus Speed: 66 MHz
Data Path Width: 64 bit
Address Width: 32 bit
ROM: 1 MB ROM + 3 MB toolbox ROM loaded into RAM
RAM Type: 144 pin SO-DIMM
Minimum RAM Speed: 100 MHz
Onboard RAM: 0 MB
RAM slots: 2
Maximum RAM: 256 MB
Level 1 Cache: 32 kB data, 32 kB instruction
Level 2 Cache: 512 kB backside, 1:2
Expansion Slots: mezzanine

Video
Monitor: 15″
VRAM: 2 -6 MB SGRAM
Max Resolution: 16 bit 1024×768

Storage
Hard Drive: 4 GB
ATA Bus: EIDE
Optical Drive: 24x CD-ROM

Input/Output
USB: 2
Audio Out: stereo 16 bit mini
Audio In: stereo 16 bit mini
Speaker: stereo, SRS
Microphone: mono

Networking
Modem: 56 kbps
Ethernet: 10/100Base-T

Miscellaneous
Family: iMac
Codename: Columbus
Gestalt ID: 406
Power: 80 Watts
Dimensions: 15.8″ H x 15.2″ W x 17.6″ D
Weight: 40 lbs.
Minimum OS: 8.1
Maximum OS: 10.3.9
Introduced: August 1998
Terminated: January 1999

Notes
The Rev. 2 iMacs included 6 MB of VRAM standard, allowing for 24 bit color at 1024×768.

Photo courtesy Masashige Motoe, licensed under Creative Commons Attribution ShareAlike 2.0

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