i changed my mind i choosed this one : Asus N73Jn
Processor & Cache Memory
Intel Core i5 Processor 540M, 2.53 GHz with Turbo Boost up to 3.06 GHz
Operating System
Genuine Windows 7 Ultimate
Chipset
Mobile Intel HM55 Express Chipset
Main Memory
DDR3 1066 MHz SDRAM, 2 x SODIMM socket for expansion up to 8GB SDRAM
Display
17.3-inch 16:9 HD+ (1600x900) LED backlit, Asus Splendid Video Intelligent Technology
Video Graphics & Memory
NVIDIA GeForce GT335M, with 1GB VRAM
Hard Drive
2.5 – inch (9.5mm) SATA
640GB,5400rpm
Dual HDD support
Optical Drive
DVD Super Multi Double Layer
Card Reader
5 in 1 card reader SD,MMC,MS,MS-Pro,XD