The basic configuration would be as follows:
* iMac with Intel Core 2 Duo processor (E8135) @ 2.4Ghz * Built-in 20in widescreen TFT LCD display (up to 1680 x 1050 resolution) * 1Gb RAM DDR2 PC2-6400 (800Mhz) SDRAM SO-DIMM * 250Gb Serial-ATA hard drive; 7200rpm * Slot-loading 8x SuperDrive optical drive -- reads/writes/rewrites CDs and DVDs * ATI Radeon HD 2400 XT with 128MB DDR3 SDRAM; PCI Expresss * Built-in iSight camera * Built-in stereo speakers, built-in microphone, headphone/optical digital audio output, audio line in * Built-in 10/100/1000BASE-T (Gigabit) Ethernet * Built-in AirPort Extreme wireless 802.11a/b/g/n * Built-in Bluetooth 2.1 + EDR (Enhanced Data Rate) module * 1x Mini SVGA video out (mirror only) with support for VGA, S-video, and composite video * 1x FireWire 400 port (up to 400 Mbps) * 1x FireWire 800 port (up to 800 Mbps) * 3x USB 2.0 ports (up to 480 Mbps) * Apple model: A1124, MB323 * Apple description: iMac (20-inch Early 2008) [codename Penryn] * Introduced: April 2008 * Discontinued: March 2009