iMac PowerPC 750 (G3) 1998

Based on the Columbus architecture, the original Apple iMac - Bondi (Rev. A & B) is powered by a 233 MHz PowerPC 750 (G3) processor with a 512k backside level 2 cache. It includes 32 MB of RAM, a 4.0 GB EIDE hard drive, and either ATI Rage IIc graphics with 2 MB of VRAM or ATI Rage Pro Turbo graphics with 6 MB of VRAM. All components are packed into a "bondi blue and ice" colored, "retro-futuristic" all-in-one chassis with a 15-inch "crystal clear" CRT display.

Apple marketed the iMac as a groundbreaking Mac for the internet era, reflected in the "i" prefix. It was distinctive not only for its aesthetics but also for being the first Mac to feature USB ports—a new standard from the Wintel world supporting up to 127 devices—which replaced SCSI, ADB, and Mac serial ports. It was also notable as the first Mac to ship without a floppy drive.

The "revision A" (M6709LL/A) and "revision B" (M6709LL/B) iMacs are identical except for their graphics systems. The "revision A" model, introduced on May 6, 1998, and shipped on August 15, 1998, has ATI Rage IIc graphics with 2 MB of VRAM. The "revision B" model, introduced on October 26, 1998, features ATI Rage Pro Turbo graphics with 6 MB of VRAM.

Symbolizing Apple's resurgence, this first iMac shocked the computer industry with its innovative design and marketing. The translucent Bondi Blue case was a radical departure from the boring beige boxes of the past and captivated many. The decision to abandon legacy ports in favor of USB was controversial at the time but ultimately proved to be ahead of the curve, setting a new industry standard. [42] While its performance was standard for the era, its contribution to making the internet more accessible and computers more personal was immeasurable. [42] The Rev. B model offered improved graphics performance, enhancing its practicality.