Apple Power Mac G5 Dual PowerPC G5 1.8GHz 1GB 80GB DVD&plusmn;RW OS X Apple PowerMac G5 Dual PowerPC G5 1.8 GHz Tower System General Features: Mac OS X pre-installed Dual 1.8 GHz PowerPC G5 processors 512 KB L2 cache per processor 900 MHz Front Side Bus per processor 512 MB PC-3200 DDR RAM (supports up to 4 GB) 80 GB SATA hard drive CD-RW/DVD-ROM combo drive NVIDIA GeForce FX 5200 Ultra AGP video card w/64 MB DDR SDRAM