BenQ Joybook S57
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    Acer Aspire AS7551-3634
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    General Class Standard Laptop Desktop replacement
    Operating Sistem Windows Vista Windows 7
    Body Dimensions 14.96 in x 10.24 in x 1.40 in16.34 in x 1.35 in x 10.83 in
    Weight 2.40 kg (5.29 lb)3.30 kg (7.28 lb)
    Color BlackBlack
    Display Size 15.6 inches17.3 inches
    Resolution 1366x7681600x900
    LED YesYes
    3D NoNo
    Processor Name Intel Core 2 Duo P8700
    Frequence 2.53 GHz
    Cores 2 per processor
    Cache L2 Cache:3.0 MB
    Arhitecture 64-bit
    Technology 45nm
    Chipset Mobile Intel PM45 ExpressAMD M880G
    TDP 25W
    Features Front side bus (FSB):1066 MHz
    Graphics Type Dedicated cardIntegrated card
    Name ATI Mobility Radeon HD4650ATI Mobility Radeon HD 4250
    Memory Capacity 1 GB4 GB
    Max Capacity 4 GB8 GB
    Max Capacity Per Slot 2 GB4 GB
    Type DDR2DDR3
    Slots 12
    Total Slots 22
    Storage Capacity 250 GB320 GB
    Size 2.5"
    RPM 5400RPM5400RPM
    Type Hard Disc (HDD)Hard Disc (HDD)
    Interface SATASATA
    Optical Type Reading support: CD DVD BD
    Writing support: CD DVD    		Reading support: CD DVD
    Writing support: CD DVD
    Networking LAN 1000 mbps1000 mbps
    Wifi Yes (802.11a, 802.11b, 802.11g, 802.11n)Yes (802.11b, 802.11g, 802.11n)
    Modem YesNo
    Infrared NoNo
    Wimax NoNo
    UWB NoNo
    Interfaces USB 4 Version:2.03 Version:2.0 Powered while off:No
    HDMI Yes
    VGA YesYes
    LAN RJ-45RJ-45
    ESata Yes (1)No
    FireWire NoNo
    Expansion Slot ExpressCard
    Microphone Microphone in 3.5mmMicrophone in 3.5mm
    Headphone Audio out 3.5mmAudio out 3.5mm
    Card Reader Memory Stick, Memory Stick PRO, MMCMemory Stick, Memory Stick PRO, SD, xD-Picture Card, MMC
    Multi Purpose DriveBay NoNo
    Docking Station Port NoNo
    Devices Keyboard
    Pointing TouchpadTouchpad (2 Buttons)
    Speakers Speakers total power:4W
    Camera Yes, 2 megapixelsYes
    Microphone YesYes
    Security Features Kensington lock
    Baterry Cells 6 cells6 cells
    Type Li-IonLi-Ion
    Capacity 48 WHr / 4400 mAh4400 mAh
    Autonomy 2.5 Hours3 Hours
    Other Adapter power consumption:Typical: 65 W

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