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Thread: Dual channel memory: ganged or unganged?




  1. #1
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    Default Dual channel memory: ganged or unganged?

    My manual says bios need to be set in ganged for single dual channel. I did set it in unganged though, and cpuz shows "channels # : Dual".
    I remember from a MSI mobo that unganged was needed for dual channel. But I am afraid I mix things up. Any suggestions please?
    Gigabyte MA790GP-DS4H
    Corsair twinx DDR2 2048Mb pc8500 dominator 2x (setup in dual channel at 1066MHz, slots 3 and 4)
    AMD 9850 phenom BE
    Scythe-mugen cooler
    WD 150Gb velociraptor sata300
    Samsung 750Gb sata300
    Samsung 1000Gb sata300 x2
    Gigabyte GV-R4850 512Mb DDR3 x2 in crossfire
    Windows xp professional sp3
    home-networked with KT600 AMD2600+ and some laptops

  2. #2
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Dual channel memory: ganged or unganged?

    Ganged = dual channel mode for ram

    Phenom has two memory controllers on the CPU.

    Ganged is setting both memory controllers to work together which allows data (that is being used by all cores) to await on the queue until they are accessed.

    Unganged means that the two controllers work independently. This allows them to work asynchronously with reference to individual clocks with their one or two Dimms.

  3. #3
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    Default Re: Dual channel memory: ganged or unganged?

    Thanks for the very clear explanation.
    What do you recommend as setting? Ganged or unganged? I have two identical dimms of 1Gb.
    Gigabyte MA790GP-DS4H
    Corsair twinx DDR2 2048Mb pc8500 dominator 2x (setup in dual channel at 1066MHz, slots 3 and 4)
    AMD 9850 phenom BE
    Scythe-mugen cooler
    WD 150Gb velociraptor sata300
    Samsung 750Gb sata300
    Samsung 1000Gb sata300 x2
    Gigabyte GV-R4850 512Mb DDR3 x2 in crossfire
    Windows xp professional sp3
    home-networked with KT600 AMD2600+ and some laptops

  4. #4
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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  5. #5
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    Default Re: Dual channel memory: ganged or unganged?

    Ganged results in higher bandwidth - there are 1x128 bit moved in 1T while unganged gives 2x64 bit.
    GA-FXA990-UD3v4
    AMD FX-8320
    Kingston 2x4GB 1866 HyperX
    Gigabyte R6850C-1GB
    1x WD Blue 1TB / 1x SSHD 1TB Seagate
    Win7x64


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