Toshiba Tecra A10: 15.1" Screen, 250GB HDD, 3GB RAM, 2.26 GHz Centrino2, Webcam/Skype, Nvidia graphics, 64-bit Windows Vista Business. Toshiba Tecra A10: 15.5" Screen, 250GB HDD, 4GB RAM, 2.53 GHz Core2Duo, Webcam/Skype, Nvidia graphics, 64-bit Windows Vista Business.