Samsung RV510 15.6" Notebook (2.3GHz Intel Pentium Dual-C T4500 4GB RAM 320GB HDD DL DVD-RW Microsoft Windows 7 Home Premium 64-bit) Samsung RV510 15.6" Notebook (2.3GHz Intel Pentium Dual-C T4500 4GB RAM 320GB HDD DL DVD-RW Microsoft Windows 7 Home Premium 64-bit)