Processor AMD Athlon 64 3800+ 2.4 GHz Network Interface Gigabit Ethernet- Integrated Installed OS Genuine Windows Vista Business Slots and bays (total/available) 4(4) x 4(1) Memory (std/max) 1 GB/2 GB Disk capacity 80 GB (Serial ATA) Form factor Tower Audio ADI 1986 A Configuration type Tower, PCI/PCI Express Graphics subsystem Intel Graphics Media Accelerator 3000, and PCI Express Media Device CD-RW/DVD-ROM Combo:16X Max; Fax/modem speed -- Unique System Features The smart choice for small business computing needs and budgets.