The 4th generation iMac, alongside the Macbook Pro is Apple’s first computer to feature Intel Processors, as Apple plans to transition all existing PowerPC Macs to Intel. The design of the iMac is the same white polycarbonate plastic look as the previous iMac G5.

The iMac (Intel White) came with a: 1.83GHz Intel Core Duo (T2400) Processor, 512MB of DDR2 memory, 160GB or 250GB 7200-rpm SATA hard drive, ATI Radeon X1600 graphics with 128MB GDD3 SDRAM, 17-inch and 20-inch 16:10 widescreen display.

In late 2006, Apple launched a new 24-inch iMac to its existing lineup. The new 24-inch display boasts a 1920 x 1200 resolution, this makes it the first iMac with the ability to display full 1080p High Definition content.

The white polycarbonate plastic design was available until August 2007. The next iMac dropped the polycarbonate plastic design in favour of an aluminium enclosure.