Toshiba Satellite A305-S6916 Core 2 Duo T6400 2.0GHz 4GB 320GB DVD&plusmn;RW 15.4" Vista Home Premium 64-bit w/Webcam Toshiba Satellite A305-S6916 Core 2 Duo T6400 2.0 GHz 15.4-inch Widescreen Notebook General Features: Fusion Finish with Kinetic Pattern Microsoft Windows Vista Home Premium 64-bit pre-installed w/COA Intel Core 2 Duo T6400 2.0 GHz processor Intel Centrino Inside Mobile Intel GM45 Express Chipset 4 GB PC6400 DDR2 SDRAM (4 GB maximum supported)