Processor & Cache Memory:Intel® Core™ i5 Processor 520M/450M : 2.53 GHz with Turbo Boost up to 2.93/2.66 GHz;
 Intel® Core™ i3 Processor 370M : 2.4 GH
Operating System:Genuine Windows® 7 Ultimate
Genuine Windows® 7 Professional
Genuine Windows® 7 Home Premium
Genuine Windows® 7 Home Basic
Chipset:Mobile Intel® HM55 Express Chipset
Main Memory:DDR3 1333 MHz SDRAM, 2 x SODIMM socket for expansion up to 4GB SDRAM
Display:HD (1366x768) LED backlit 16:9''15.6
Video Graphics & Memory:NVIDIA® GeForce® 425M, with 2GB DDR3 VRAM
Hard Drive:9.5mm SATA 640GB,5400rpm ,500GB,5400rpm;7200rpm
Interface:x Microphone-in jack
1 x Headphone-out jack
 2 x USB 2.0 ports,1 x USB 3
1 x RJ45 LAN Jack for LAN insert
1 x HDMI