What is the difference between Asrock 939NF4G-VSTA and 939NF4G-SATA2 motherboard
and how well does the built-in graphic work in these two motherboard ?

http://www.asrock.com/mb/index.us.asp?s=939939NF4G-VSTA

    SOCKET 939 for AMD Athlon™ 64FX / 64X2 / 64 Processors
    NVIDIA® GeForce 6100 chipset
    NVIDIA® nForce 410 MCP chipset
    FSB 1000MHz (2.0GT/s), Hyper-Transport Technology and AMD Cool 'n' Quiet Technology
    Integrated NV44 graphics DX9.0 VGA, Pixel Shader 3.0, Max. shared memory 128MB
    Supports Dual Channel DDR400, 4 x DDR DIMM slots
    Untied Overclocking : During overclocking, FSB enjoys better margin due to fixed PCIE/ PCI Buses
    Hybrid Booster - ASRock Safe Overclocking Technology
    1 x PCI Express x16 slot
    2 x SATA2 3.0 Gb/s, support RAID 0, RAID 1, JBOD and "Hot Plug" FUNCTIONS
    7.1 channel with HIGH Definition Audio
    Windows® Vista™ Premium Logo Hardware READY
    HD 8CH I/O: 4 ready-to-use USB Ports, 7.1 channel audio jack

939NF4G-SATA2   
   
    Socket 939 for AMD Athlon™ 64FX / 64X2 / 64 processors
    NVIDIA® GeForce 6100 chipset
    NVIDIA® nForce 410 MCP chipset
    Supports FSB 1000MHz (2.0GT/s), Hyper-Transport Technology and AMD Cool 'n' Quiet Technology
    Integrated NV44 graphics DX9.0 VGA, Pixel Shader 3.0, Max. shared memory 128MB
    Supports Dual Channel DDR400, 4 DIMMs slots
    Hybrid Booster - ASRock Safe Overclocking Technology
    PCI Express x16 slot for VGA interface
    PCI Express x1 slot
    2 ports of SATA2 3.0Gb/s, RAID 0, 1, JBOD, 2 ATA133 IDE ports
    7.1 Channel Superior Quality Audio, 10/100 Ethernet LAN
    ASRock 8CH I/O: 4 ready-to-use USB 2.0 ports, 7.1 channel audio jack

One review says "The integrated video certainly isn't capable of being a gamer's friend, but when it comes to playing videos inside of mplayer or carrying out related desktop or server TASKS, it is certainly satisfactory." This is typical of onboard video.