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RAM upgrade

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nricko61 -  

Hello,

I have an ASUS Prime A320M-K motherboard with 8GB of DDR4 DIMM RAM - 2666MHz and I just bought 2 sticks of 8GB DDR4 3200MHz. After installing the sticks, the PC won't start. I rolled back and the PC works correctly. Do you know why?

6 answers

  1.  luckydu43

    Hello,

    Physically, no limitation, it should boot. The 3200s are an XMP profile, not a JEDEC profile, so the RAM should natively default to a JEDEC profile (2133/2400) before enabling, from the BIOS, applying an XMP profile.


    So the two sticks, after learning, will still be seen only at 2133/2400.


    Memory learning can take time and may make it seem like a KO boot.


    You must wait 10 minutes or the PC may shut down outright before concluding a KO.

    After that you can help the BIOS from the currently functioning config:

    - Disable XMP

    - F5 or "load defaults" after saving the existing config into a profile

    - Try a first learning with a single 3200 stick and let it run for 10 good minutes

    Stay tuned ;-)

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    You feel my Big Data?
    Sacrifice some liberties for more security and you lose THEM ALL.
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    1. Winux01

      Hello,

      Just having DDR4 isn’t enough for it to work; you have to consider the motherboard and processor memory controller and the compatibility list for the RAM sticks to be sure it works 100%, even though most of the time it does, but if a kit doesn’t work you should return it and try another one.

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      1. nricko61 Author

        The clips aren’t on the list, but I managed to get them working. Remaining task: optimization. Thanks

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      2. jfmimi Contributor
        @nricko61

        Hello

        as for the 3200MHz, you may have restrictions due to the memory controller on the motherboard and/or the CPU

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      3. flo88 Contributor
        @jfmimi

        Hello

        +1 with jfmimi.

        I would add that we should check if the XMP is active, it is the one that will validate the 3200MHz (1600 in real speed).

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    2. nricko61
      Default BIOS, 1 stick installed, 25 minutes after startup still nothing. The PC does not shut down, however.
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      1. luckydu43

        Arf.

        I’m not sure it's still in learning mode: even my CM Workstation doesn't take this long to change a CPU --'

        We can try updating the BIOS from the functional config

        With the BIOS Update Manual here : 

        If despite that, it’s still KO :

        - still to check all RAM slots with the 2 sticks alone, 8 boot if 4 slots

        - and give the CPU and RAM sticks ref. There might be a chance that they don’t have EXPO profile but it doesn’t matter, for me the JEDEC default profile should have taken precedence and allowed the boot, even with a degraded frequency/latency pair.

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      2. nricko61 Author
        @luckydu43

        EZ update tells me that my BIOS is up to date.

        I only have 2 RAM slots. I’m running with an old 2666MHz stick in slot 1. I tried one of the two new sticks in slot 1, I’ll try the second one alone. Can I try a new stick with the old one at 2666MHz even if the frequencies differ?

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      3. nricko61 Author
        @nricko61Miracle,

        After putting the sticks in slot 2 with the old one in slot 1, I did indeed have 16 GB but not optimal with 2 different frequencies. I put them in solo afterward, 8 GB each without issue, and now I have both and it works.

        However, the frequency at 1466 MHz (see photo) is that normal?
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      4. luckydu43
        @nricko61

        GG, and that deserves an upvote for detailing how you tackled it ;-)

        DRAM frequency is still halved.

        TheDouble Data-Rate (DDR) explains the doubled commercial frequency, in other words.

        For you, 1466.4 x 2 equals 2933MHz, a frequency not too bad in DDR4. There’s surely a way to push higher. Especially seeing the latencies. We’re at 2933 22-21-21-47-1T, I can’t believe that isn’t JEDEC.


        Already, re-enable the XMP profile and see if that immediately fixes the problem by moving to 3200 with latencies closer to 16~18

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      5. nricko61 Author
        @luckydu43

        I didn’t find the A-XMP in the BIOS, but I tried RAM overclocking by forcing the frequency instead of auto mode. There’s a boot refusal between 3000 and 3200. That’s why I’m at 2933. My processor runs at 3500 at best, so I’ve gained a bit, but mainly 8GB more.

        Thanks for everything

        See you some day

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    3. flo88 Contributor

      Hi

      Can we assume that the 3200MHz kit is used?

      That could explain... if that’s the case.

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      3. bazfile Moderator

        Hello @nricko61 StatusMember .

        Here is the type of RAM compatible:

        bazfile
        Moderator/Security Contributor.
        a hello, a reply, a thank you always brings joy.

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