Dell Mobile Precision M4600 Laptop Workstation- Intel Core i5-2520M Dual Core 2.50GHz - 2GB DDR3 - 320GB HDD - Windows 7 Professional, 64-bit Intel Core i5-2520M Dual Core 2.50GHz 3MB 2.0GB, DDR3-1333 SDRAM AMD FirePro M5950 Mobility Pro Graphics with 1GB GDDR5 320GB Hard Drive, 7200RPM - 9-cell (97Wh) Primary Battery Windows 7 Professional, 64-bit