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    How come I have DUAL Channel Memory?

    Discussion in 'ASUS Gaming Notebook Forum' started by ibbi1337, Jul 6, 2013.

  1. ibbi1337

    ibbi1337 Notebook Consultant

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    I always thought that in order to have DUAL CHANNEL memory you need to install RAM Chips in identical pairs

    as in, have slot 1 = 8 GB 1600 Mhz. RAM
    slot 2 = 8 GB 1600 Mhz. RAM
    slot 3 = 8 GB 1600 Mhz. RAM
    slot 4 = 8 GB 1600 Mhz. RAM

    I recently got an ASUS G750JX with 24 GB DDR3 1600 Mhz. RAM and there is one out of the 4 SODIMM slots empty

    So I was thinking I definitely must be running on single channel since one slot is empty thus defying the above theory of having RAM chips installed in pairs

    to my surprise, upon opening Speccy, it reports that the RAM is running in Dual Channel mode?!

    How come? can someone explain please?

    [​IMG]

    Note: with my previous G75VW which had 16GB 1600 Mhz. RAM running in Dual Channel mode I used to get 7.8 in the WEI index score for memory but now with my current laptop I get 7.9

    I wonder why would ASUS choose such a silly number as 24 GB instead og either 16 GB or 32 GB to stay in Dual channel mode
     
    ibbi1337, Jul 6, 2013
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  2. tijo

    tijo Sacred Blame

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    You're running in asynchronous dual channel mode, meaning the first 16 GB will run in dual channel and if you hit more than that, the other 8 GB will run in single channel.

    24 GB is more than most of the population needs anyways.
     
    tijo, Jul 6, 2013
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  3. ibbi1337

    ibbi1337 Notebook Consultant

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    So I guess this is the new Intel Flex Mode heh?

    I went to the Computer Plaza here in Dubai to purchase another 8 GB Stick of 1600 Hz. RAM but all they have are the older 1.5V RAM I need 1.28 - 1.35V RAM to work properly with Haswell otherwise the higher voltage older RAM will cause more heat and instability for the new Haswell CPUs

    Guess I have to wait for a while until 1.35 V RAM is more common here in Dubai
     
    ibbi1337, Jul 6, 2013
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