Apple Power Mac G5 Desktop M9455LL/A (Dual 2.0-GHz Power PC G5, 512 MB RAM, 160 GB Hard Drive, SuperDrive) (Discontinued by Manufacturer) Monitor Not Included L2 Cache - 512K per processor FSB (Frontside Bus) - 1GHz per processor 512MB of PC3200 400MHz DDR SDRAM (upgradeable to 8GB) 8 RAM Slots (6 open)