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For a computer and/or laptop used for developing and as server purposes, of course, it according with the hardware itself.

Question

With what command is possible know the mainboard requirements about the RAM? It such as:

  • DDR type
  • MHz
  • ECC or non-UCC
  • Buffered or Unbuffered

Goal

Confirm that all the Mobo requirements were matched by the installed RAM, according with my understanding the dmidecode command covers the current RAM installed.

Therefore, for example, about the MHz is need it to detect if the installed RAM, , is downgraded due if it has a higher frequency than the Mainboard's requested. For example if the Mobo requests 1333MHz and the RAM has 1600MHz, so the latter is downgraded because the former only can work with 1333MHz.

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  • The question and the wording used are almost entirely wrong. Maybe English is not your native language, I don't know. The motherboard doesn't have "requirements" about the RAM, it only specifies what type of RAM is supported. And then the memory controller has been part of the CPU for over a decade now thus what CPU supports is a lot more relevant. The motherboard may only limit the amount of RAM being installed and its maximum clocks.
    – Artem S. Tashkinov
    Commented Oct 2, 2023 at 18:35
  • @ArtemS.Tashkinov yes - it is about "it only specifies what type of RAM is supported" ...
    – Manuel Jordan
    Commented Oct 2, 2023 at 18:39
  • Again, it's only the type of RAM that is relevant. Supported RAM speeds mostly come from your CPU, not motherboard. And when we are talking about exceeding JEDEC specifications, that is on your motherboard and CPU. Consult with your motherboard OEM website, not dmidecode.
    – Artem S. Tashkinov
    Commented Oct 2, 2023 at 18:41
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    dmidecode/lshw show only what's installed and at what speed it's running. These utils won't tell you what your motherboard supports or not.
    – Artem S. Tashkinov
    Commented Oct 2, 2023 at 18:44
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    No way, right. Consult with your motherboard manual (tech specs) and CPU specs. For instance to use ECC memory, both motherboard and CPU must support it.
    – Artem S. Tashkinov
    Commented Oct 2, 2023 at 18:46

1 Answer 1

Reset to default
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dmidecode -t 2

Done as root (or sudo dmidecode -t 2) will print out enough main board info.

From there you have to go to the motherboard manufacturer documentation (website) for that model main board to determine its RAM compatibility. Linux does not provide a database telling you that information.

To show information on all RAM DIMM's currently installed :

dmidecode --type 17

Also, the lshw > lshw_output.txt command can provide a lot of useful info of that nature as well; pipe that output to a text file it's a lot.

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    Or -t baseboard, -t memory
    – Stéphane Chazelas
    Commented Oct 2, 2023 at 16:00
  • A wrong answer for the wrong question.
    – Artem S. Tashkinov
    Commented Oct 2, 2023 at 18:48
  • @ArtemS.Tashkinov I'm confused. Your earlier comments indicate that you need to consult with the motherboard OEM to see what RAM is supported. This answer gives the info on which OEM to contact and with what specific info is required for an answer. This just seems to be an elaboration on those comments.
    – doneal24
    Commented Oct 2, 2023 at 20:25

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