Lenovo Desktop ThinkStation S20 Xeon Six-Core 2.40GHz Bus Speed 5.86GT/s 12 MB Cache RAM 8GB 250GB SATA DVD Multiburner Gigabit Enabled (1.00 Gbps) Local Area Network Capable Quadro 600 59-Pin DMS Microsoft Windows 7 Professional (32-bit) License Included - OS Installed U.S. English Tower Black Media Card Reader