IBM ThinkCentre M58 Intel Core 2 Duo E8500 3.16GHz 4GB 2TB DVD&plusmn;RW Win7Pro (Black) Intel Core Duo E8500 3.16GHz; 2000GB SATA; 4GB DDR2 Intel Graphics Media Accelerator 4500 0MB No Wireless; Bluetooth Small Form Factor; No Optical Drive; Microsoft Windows 7 Professional