Operating SystemGenuine Windows Vista® Ultimate(English Version) Pre-installed Multilanguage User InterfaceTraditional Chinese CPUIntel® Core™2 Duo Processor T9300(2.50 GHz) ChipsetMobile Intel® PM965 Express Chipset Main Memory2GB DDR2 SDRAM (upgradeable up to 4GB) Hard Disk300GB (Serial ATA, 4200rpm) Graphics AcceleratorNVIDIA® GeForce® 8600M GSnotebook graphics processing unit (GPU) Dedicated Video Memory256MB Display15.4" Wide (WXGA: 1280 x 800) TFT Colour display(Clear Bright High Colour LCD 90) Memory Card SlotMemory Stick Duo Slot SD/SDHC Memory Card Slot Optical DriveBlu-ray Disc™ Drive(DVD±RW/±R DL/RAM compatible) Wireless NetworkIEEE 802.11a/b/g/Draft n, Bluetooth Dimensions (WxHxD)355.8 x 24.9 - 34.5 x 254.4 mm Weight(with battery)2.8 kg (including the supplied battery)