Sharp M4000 WideNote Notebook PC CPU Intel Pentium M 740, 1.73 GHz, 2MB L2 Cache, 533 MHz FSB Operating System Microsoft Windows XP Professional SP 2 Memory 512MB (base) / Expandable to 1536MB. Dual channel supported. Display SHARP 13.3 WXGA TFT LCD, 300 cd/m2 Hard Drive Approx. 80GB, 5400 RPM, Ultra ATA intertace