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F3-19200CL10Q2-64GBZHD woes

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  • F3-19200CL10Q2-64GBZHD woes

    I have 64GB quad-channel 2400MHz kit of F3-19200CL10Q2-64GBZHD ( my second, I had to return the first because it was defective ) running on a Rampage IV Extreme with a 3970X but for the life of me I cannot get it to run at 2400MHz. I currently have the memory clocked at 9-11-11-31 at 2133MHz and it runs fine. Priming for 24 hours results in no errors. But if I use the default XMP profile #1 and run it at 2400MHz Prime95 will almost immediately stop with a rounding error within at least 10 minutes.

    I've tried following the Rampage IV Extreme RAM Guide and also increasing the latencies / relaxing the timings to no avail -- I get the same rounding errors in Prime95.

    I have to restate that it's running fine at 2133MHz 9-11-11-31-2T.

    Can anyone help?

    thanks,

    jdb2

  • #2
    Since eight modules at DDR3-2400 is probably the very edge of most sandy bridge-e memory controllers capabilities, it will come down to tuning system voltages. It might be easier to get the XMP stability using a Core i7-4xxx series processor, but that is mostly speculation on my part.
    Team HardwareLUXX | Show off your G.SKILL products!

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    • #3
      I do remember Gskill Tech replying to a similar topic. While the SB-E processors are better than the regular SB, the IMC is still SB and is tough to get to 2400 at all much less with a full load. They reccomend a 4XXX IB-E process for 2400 with 32 or 64 gb.
      ASUS P8Z77-V LK / I5 3350P / 2X F3-12800CL9D-8GBRL Running @ 1866mhz / MSI GTX760 TF

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      • #4
        Do you have VCCSA and DRAM Voltage manually set?

        Thank you
        GSKILL TECH

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        • #5
          Originally posted by GSKILL TECH View Post
          Do you have VCCSA and DRAM Voltage manually set?

          Thank you
          GSKILL TECH
          DRAM voltage is set to 1.65 volts. VCCSA is already very high at 1.4V on AUTO. If I set it manually to a lower recommended value ( such as in the G.SKILL RAM Guide ) then my system won't post.

          jdb2
          Last edited by jdb2; 11-21-2013, 12:08 PM.

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          • #6
            Sounds like the CPU is not capable, you may need to upgrade IB-E to fully support the RAM at DDR3-2400.

            Thank you
            GSKILL TECH

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