iMac Intel Core Duo --------------------- Dual Core 1.83 (17") or 2.0 GHz (20") Intel RAM: DDR-2 667 MHz SODIMMs, 2 sockets, max. 2 Gb - Stock configurations ship with a single 512 or 1 Gb SODIMM, leaving one empty socket (good) - PC5300 667 MHz DDR-2 RAM is not exchangeable with any prior Mac RAM - Uses laptop SODIMMs, not DIMMs like last model - No mention of Dual-channel or 128 bit memory access (which is not surprising, with laptop RAM). DL Superdrive standard Airport Extreme and Bluetooth standard External display supports both spanning and mirroring, up to 1920 x 1200, (higher with analog VGA) does not support 30" dual-link DVI monitors - has a Mini-DVI port (requires adaptor) International power supply 100V - 240V. 667 MHz system buss Analog audio input only, analog and optical digital audio output. No Firewire 800 No Modem -- USB modem optional Can't go to 2.5 Gb RAM like previous G5 model Cannot run Classic (OS9) applications Hard drive and monitors seem to remain the same as prior model. Notes: Previous iMac G5 models are still on sale, have not dropped in price.