Apple iMac G5 PowerPC G5 1.8GHz 256MB 80GB CDRW/DVD GeForce FX 5200 Ultra 17" OS X Mac OS X 10.3 pre-installed PowerPC G5 1.8 GHz processor 600 MHz Front Side Bus 256 MB DDR SDRAM (expandable up to 2 GB) 80 GB SATA hard drive