Sony VAIO VGN-SR29XN
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    Lenovo ThinkPad W520
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    General Class Portable Laptop Standard Laptop
    Operating Sistem Windows Vista Windows 7
    Body Dimensions 12.40 in x 1.34 in x 9.20 in14.68 in x 1.41 in x 9.65 in
    Weight 1.95 kg (4.3 lb)2.70 kg (5.95 lb)
    Color GrayBlack
    Display Size 13.3 inches15.6 inches
    Resolution 1280x800
    LED YesYes
    3D NoNo
    Processor Name Intel Core 2 Duo P8400Intel Core i5 2520M
    Frequence 2.26 GHz2.5 GHz
    Cores 2 per processor2 per processor
    Cache L2 Cache:3.0 MBL3 Cache:3.0 MB
    Arhitecture 64-bit64-bit
    Technology 45nm32nm
    TDP 25W35W
    Graphics Type Integrated cardDedicated card
    Name Intel GMA 4500MHDNVIDIA Quadro 1000M
    Memory up to 1340 MB2048 MB
    Memory Capacity 4 GB
    Max Capacity 4 GB32 GB
    Max Capacity Per Slot 2 GB8 GB
    Type DDR2DDR3
    Slots 2
    Total Slots 24
    Storage Capacity 250 GB160 GB
    RPM 5400RPM7200RPM
    Type Hard Disc (HDD)Hard Disc (HDD)
    Interface SATASATA
    Features Accelerometer for HDD protection:Yes
    Optical Type Reading support: CD DVD
    Writing support: CD DVD    		Yes
    Networking LAN 100 mbps
    Wifi Yes (802.11a, 802.11b, 802.11g, 802.11n)Yes (802.11a, 802.11g, 802.11n)
    Bluetooth Yes Version:2.1 EDR:Yes
    Modem Yes
    Infrared No
    Wimax No
    UWB No
    Interfaces USB 2 Version:2.03 Powered while off:Yes
    VGA YesYes
    LAN RJ-45
    ESata Yes (1)
    FireWire Yes (1)No
    Expansion Slot ExpressCard (34)ExpressCard (34), PCI Express Mini
    Microphone Microphone in 3.5mmMicrophone in 3.5mm
    Headphone Audio out 3.5mmAudio out 3.5mm
    Card Reader Memory Stick, Memory Stick Duo, Memory Stick PRO, Memory Stick PRO Duo, SDMMC
    Multi Purpose DriveBay No
    Docking Station Port Yes
    Devices Keyboard
    Pointing Touchpad (2 Buttons)Touchpad (2 Buttons), Pointing stick (2 Buttons)
    Camera Yes, 1.3 megapixelsYes
    Microphone YesYes
    Security Features
    Baterry Cells 9 cells
    Type Li-IonLi-Ion
    Autonomy 3.6 Hours10.7 Hours

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