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Help Understanding Memtest86 Results for Brothers PC

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  • Help Understanding Memtest86 Results for Brothers PC

    Recently my brother has been having issues with his PC randomly turning off and restarting. We tried a bunch of things but I ended up wanting to test the Ram. I ran the test with both of his sticks in and received 330~ errors. We took out one of the sticks and it received 0 errors then when I tested the other stick it received 330~ through the 4 passes. I do not really know what the errors mean so I'm curious if one of the sticks is bad.

    Here is the basic PC Specs:
    Intel i7 8700k
    Asus Prime z390p
    8x2gb DDR4 3000 G.Skill Riptide V
    GeForce RTX 2060

    Here is the Errors recorded from pass 4 of the memtest:
    2020-08-02 20:54:03 - [MEM ERROR - Data] Test: 3, CPU: 2, Address: 3B84B59B8, Expected: FFFFFFFF, Actual: FFFFFFDF
    2020-08-02 20:55:54 - [MEM ERROR - Data] Test: 4, CPU: 2, Address: 3B84B59B8, Expected: 7F7F7F7F, Actual: 7F7F7F5F
    2020-08-02 20:58:36 - [MEM ERROR - Data] Test: 5, CPU: 2, Address: 3B84B59B8, Expected: 766D16F0, Actual: 766D16D0
    2020-08-02 21:00:32 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3B84B59D8, Expected: BFFFFFFF, Actual: BFFFFFDF
    2020-08-02 21:00:32 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3B84B5A18, Expected: 7FFFFFFF, Actual: 7FFFFFDF
    2020-08-02 21:00:32 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3B84B5A98, Expected: FFFFFFFE, Actual: FFFFFFDE
    2020-08-02 21:00:32 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3B84B5AD8, Expected: FFFFFFFD, Actual: FFFFFFDD
    2020-08-02 21:00:32 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3B84B5B18, Expected: FFFFFFFB, Actual: FFFFFFDB
    2020-08-02 21:00:32 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3B84B5B98, Expected: FFFFFFEF, Actual: FFFFFFCF
    2020-08-02 21:00:32 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3B84B5BB8, Expected: 00000020, Actual: 00000000
    2020-08-02 21:00:32 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3B84B5C18, Expected: FFFFFFBF, Actual: FFFFFF9F
    2020-08-02 21:00:32 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3B84B5D18, Expected: FFFFFBFF, Actual: FFFFFBDF
    2020-08-02 21:00:32 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3B84B5E18, Expected: FFFFBFFF, Actual: FFFFBFDF
    2020-08-02 21:00:32 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3B84B5E58, Expected: FFFF7FFF, Actual: FFFF7FDF
    2020-08-02 21:00:32 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3B84B5ED8, Expected: FFFDFFFF, Actual: FFFDFFDF
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3B84B5F18, Expected: FFFBFFFF, Actual: FFFBFFDF
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3B84B5F98, Expected: FFEFFFFF, Actual: FFEFFFDF
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3B84B5FD8, Expected: FFDFFFFF, Actual: FFDFFFDF
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3B84B6018, Expected: FFBFFFFF, Actual: FFBFFFDF
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3B84B6098, Expected: FEFFFFFF, Actual: FEFFFFDF
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3B84B6118, Expected: FBFFFFFF, Actual: FBFFFFDF
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3B84B6158, Expected: F7FFFFFF, Actual: F7FFFFDF
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3B84B6198, Expected: EFFFFFFF, Actual: EFFFFFDF
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3B84B61D8, Expected: DFFFFFFF, Actual: DFFFFFDF
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3B84B6218, Expected: BFFFFFFF, Actual: BFFFFFDF
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3B84B6258, Expected: 7FFFFFFF, Actual: 7FFFFFDF
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3B84B6298, Expected: FFFFFFFF, Actual: FFFFFFDF
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3B84B62D8, Expected: FFFFFFFE, Actual: FFFFFFDE
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3B84B6358, Expected: FFFFFFFB, Actual: FFFFFFDB
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3B84B6398, Expected: FFFFFFF7, Actual: FFFFFFD7
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3B84B63D8, Expected: FFFFFFEF, Actual: FFFFFFCF
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3BA4B59B8, Expected: BFFFFFFF, Actual: BFFFFFDF
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3BA4B59F8, Expected: 7FFFFFFF, Actual: 7FFFFFDF
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3BA4B5A78, Expected: FFFFFFFE, Actual: FFFFFFDE
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3BA4B5AB8, Expected: FFFFFFFD, Actual: FFFFFFDD
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3BA4B5AF8, Expected: FFFFFFFB, Actual: FFFFFFDB
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3BA4B5B78, Expected: FFFFFFEF, Actual: FFFFFFCF
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3BA4B5B98, Expected: 00000020, Actual: 00000000
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3BA4B5BF8, Expected: FFFFFFBF, Actual: FFFFFF9F
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3BA4B5CF8, Expected: FFFFFBFF, Actual: FFFFFBDF
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3BA4B5DF8, Expected: FFFFBFFF, Actual: FFFFBFDF
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3BA4B5E38, Expected: FFFF7FFF, Actual: FFFF7FDF
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3BA4B5EB8, Expected: FFFDFFFF, Actual: FFFDFFDF
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3BA4B5EF8, Expected: FFFBFFFF, Actual: FFFBFFDF
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3BA4B5F78, Expected: FFEFFFFF, Actual: FFEFFFDF
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3BA4B5FB8, Expected: FFDFFFFF, Actual: FFDFFFDF
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3BA4B5FF8, Expected: FFBFFFFF, Actual: FFBFFFDF
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3BA4B6078, Expected: FEFFFFFF, Actual: FEFFFFDF
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3BA4B60F8, Expected: FBFFFFFF, Actual: FBFFFFDF
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3BA4B6138, Expected: F7FFFFFF, Actual: F7FFFFDF
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3BA4B6178, Expected: EFFFFFFF, Actual: EFFFFFDF
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3BA4B61B8, Expected: DFFFFFFF, Actual: DFFFFFDF
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3BA4B61F8, Expected: BFFFFFFF, Actual: BFFFFFDF
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3BA4B6238, Expected: 7FFFFFFF, Actual: 7FFFFFDF
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3BA4B6278, Expected: FFFFFFFF, Actual: FFFFFFDF
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3BA4B62B8, Expected: FFFFFFFE, Actual: FFFFFFDE
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3BA4B6338, Expected: FFFFFFFB, Actual: FFFFFFDB
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3BA4B6378, Expected: FFFFFFF7, Actual: FFFFFFD7
    2020-08-02 21:00:33 - [MEM ERROR - Data] Test: 6, CPU: 2, Address: 3BA4B63B8, Expected: FFFFFFEF, Actual: FFFFFFCF
    2020-08-02 21:11:46 - [MEM ERROR - Data] Test: 8, CPU: 2, Address: 3B84B59B8, Expected: 4A88EC64, Actual: 4A88EC44
    2020-08-02 21:18:32 - [MEM ERROR - Data] Test: 9, CPU: 2, Address: 3B84B59B8, Expected: 0402653B, Actual: 0402651B
    2020-08-02 21:32:40 - [MEM WARNING] Test: 13, CPU: 0, Address: 3B84B59B8, Expected: B7ACF2FA, Actual: B7ACF2DA

    From what I read online it looks like a bad ram stick to me. But just to be sure I went and made sure that my motherboards XMP was set to the correct mhz, timing (16 - 18 - 18 - 3 and voltage. We have tried wiping and reinstalling windows as well as making sure all his parts were clean in his pc. The fans all run and the heat monitor doesn't show any excessive heat.

    Is there anything else I should check?

    And I have a question about replacement ram (if the ram is infact bad), I plan to keep the good ram stick in the system. I just need to match the Old rams Timing, MHz, and Voltage right? It doesn't have to be the same stick? And would getting a total of 3 ram sticks in my system be bad? or should I stick to just replacing the single stick and leaving it at 2 sticks?


  • #2
    Yes, looks like bad RAM.

    Matched RAM sticks are better. Less compatibility and performance issues. Non matched does work most of the time however.

    The Intel i7 8700k only supports up to dual channel DDR4-2666. So faster RAM is probably a waste and 2 sticks (or 4 sticks) is better than 3 sticks.

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