The iMac G4/1.25 20-inch Flat Panel featured a 1.25 GHz PowerPC 7445 (G4) processor, 256 MB of RAM (333 MHz PC2700 DDR SDRAM), an 80.0 GB Ultra ATA/100 hard drive (7200 RPM), a tray-loading 4X SuperDrive, support for AirPort Extreme (802.11g)/Bluetooth with optional cards, and a 20-inch TFT Active Matrix LCD display at 1680×1050.
The internal components of this iMac are contained in a 10.6-inch half-sphere. Protruding from the top of the half sphere was a chrome stainless steel neck supporting the display. This design is sometimes referred to as the “sunflower iMac.” In addition to the polished stainless steel, the case and display are “ice white.” It shipped with two clear spherical external Apple Pro Speakers.
This iMac shipped with MacOS X 10.3 Panther and cannot boot into “Classic Mode” (MacOS 9).