ASUS A53E-XE3 15.6-Inch Versatile Entertainment Laptop - Black Intel Pentium B940 (2.0 GHz) 4GB of DDR3 1333MHz DRAM, 2 slots, 8GB Max 500GB Hard Drive (5400 RPM);Super Multi DVD Drive 15.6-Inch HD Display (1366x768) Windows 7 Home Premium (64 bit) Operating System