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Thread: CPU-Z reporting to different pc3 memory

  1. #11
    profJim's Avatar
    profJim is offline Chief Munchkin + moderator
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    Dec 2008
    Tacoma, WA. [USA]

    Default Re: CPU-Z reporting to different pc3 memory

    Quote Originally Posted by parsec View Post
    Prof. Jim, although your technique of matching memory to a mother board works apparently for you, I don't trust ALL memory manufactures to have competent personnel available to answer questions. Given how many times I have had memory that the manufacture said would work in a certain platform just flat out fail, I live by the QVL list. I may be missing things here, but it has saved me a lot of time and grief, since in my experience, the QVL is always right.
    In the past, many memory QVL lists contained a very small sample of tested memory models, and many or most of the listings did not include popular or best selling kits. I like G.Skills approach where they include a list of tested motherboards for each memory kit and they also have an online ram configuration tool that lets you search for compatible memory for your specific motherboard.

    If you contact the memory vendor's tech support and ask if memory model XYZ will work with my model ABC motherboard you might not get the correct answer. A better approach would be to ask them to email a list of all tested memory kits that are compatible with your motherboard.

    Will the motherboard tech support people help you with settings if the recommended memory doesn't work? Maybe.
    Will they help you with memory overclock settings? No.

    I have a lot more faith in the memory manufacturer's tech support to help you with your lifetime warrantied memory.
    Last edited by profJim; 09-26-2012 at 07:31 PM.
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  2. #12
    mach1korea is offline Junior Member
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    Jul 2012
    Jinhae Korea

    Default Re: CPU-Z reporting to different pc3 memory

    I did but it didn't make any difference changing the timings, the thing is the memory modules I'm using F3-12800CL9-2GBNQ G.Skill are listed on the Asrock QVL but not on the G.skill site for the motherboard.

    I did play around with them the weekend and tried them in single channel mode one mudule at a time in the same slot, the original set I bought no problems they showed up as PC3-12800. But the new set just running single channel one module both ot them showed as PC3-10700. I think there is something wrong with them, I have contacted the supplier and they are going to exchange them. ONLY problem is here in Korea it's 'thanks giving' week so there will be a delay.

  3. #13
    parsec's Avatar
    parsec is offline Senior Member
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    Jun 2012
    Third stone from the sun

    Default Re: CPU-Z reporting to different pc3 memory

    There is nothing really wrong with the new set of memory. Modern DRAM memory contains what is called SPD information, which is data in a standard format that is stored in each DIMM, that tells a mother boards BIOS what the memory settings, including speed, the memory will operate at. As we know, your two sets of memory have different SPD data, one set is set to 12800, the other set is set to 10700. You board is simply reading that data and setting the speed to what the data tells it to. Your first post clearly shows the SPD data is different in the two sets of memory you have. Why it is different, we don't know, but it clearly is different.

    Your two sets of memory, and your mother board, are all working fine. The problem is the two sets of memory, with the same model number, have different timing and speed data programmed into them. All you need is for the timing and speed data on both sets of memory to be matched at the speed you want (12800), which is not what you have now.

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