Apple iMac G5 Desktop with 20" MA064LL/A (2.1 GHz PowerPC G5, 512 MB RAM, 250 GB Hard Drive, SuperDrive) (Discontinued by Manufacturer) IBM PowerPC G5 Processor 2.1GHz 512MBDDR RAM 250GB Hard Drive 20-Inch Screen, ATI Radeon X600 XT Mac OS X 10.4 Tiger