Understanding the UEFI BIOS Gigabyte H81M-S for Windows 10 Pro x64

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  1. sygnus21's Avatar
    Posts : 5,359
    Win 10 Pro (x64) 20H2 (19042.928)
       #21

    Matthew Wai said:
    Unfortunately, my DDR3-1333 is lower than 2133MHz. Anyway, thanks for the info, which might be useful in the future.
    The 2133MHz spec is for DDR4. For DDR3 its lower - if memory (no pun intended) serves it's 1066MHz. BTW, when DDR5 arrives the JEDEC spec will probably be higher than 2133MHz.
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  2. Matthew Wai's Avatar
    Posts : 5,057
    Windows 10 Home 20H2
       #22

    @sygnus21, do you mean I should enable XMP for my DDR3-1333, which is higher than 1066MHz?
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  3. sygnus21's Avatar
    Posts : 5,359
    Win 10 Pro (x64) 20H2 (19042.928)
       #23

    Matthew Wai said:
    @sygnus21, do you mean I should enable XMP for my DDR3-1333, which is higher than 1066MHz?
    Please re-read my post here regarding CPU-Z. Then download and install the app. It will show you what your memory can do, and whether your board supports XMP. Further questions should be followed by screenshots of the tabs mentioned.

    Here's the bottom line.... If the board and RAM supports higher speeds than currently set you should enable XMP to get those higher speeds. CPU-Z can give you the info needed to make that decision.

    Again, I'll need screenshots to adequately answer your question(s) since I need to know for certain what your RAM specs are. Don't want to damage equipment due to misinformation.
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  4. inwell's Avatar
    Posts : 92
    Win10 Pro
    Thread Starter
       #24

    As i said,it was my very first GPT-UEFI CLEAN Installation,i have a query .
    Understanding the UEFI BIOS Gigabyte H81M-S for Windows 10 Pro x64-screenshot-1-.pngUnderstanding the UEFI BIOS Gigabyte H81M-S for Windows 10 Pro x64-screenshot-2-.png

    1.Is that UEFI partition always visible in Windows Explorer? Do i need to hide it or let it be ?
    2.The single partition on boot drive (C:237GB) can be further partitioned? With windows already installed?
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  5. CountMike's Avatar
    Posts : 18,354
    W10+Developer Insider + Linux
       #25

    inwell said:
    As i said,it was my very first GPT-UEFI CLEAN Installation,i have a query .
    Understanding the UEFI BIOS Gigabyte H81M-S for Windows 10 Pro x64-screenshot-1-.pngUnderstanding the UEFI BIOS Gigabyte H81M-S for Windows 10 Pro x64-screenshot-2-.png

    1.Is that UEFI partition always visible in Windows Explorer? Do i need to hide it or let it be ?
    2.The single partition on boot drive (C:237GB) can be further partitioned? With windows already installed?
    1. It's all normal, don't have to do anything to it.
    2. Yes it can be done but with 3rd party SW because it's active windows partition and windows won't let you do it while running. I wouldn't partition it because 237GB is not too much for windows.
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  6. inwell's Avatar
    Posts : 92
    Win10 Pro
    Thread Starter
       #26

    sygnus21 said:
    Again, I'll need screenshots to adequately answer your question(s) since I need to know for certain what your RAM specs are. Don't want to damage equipment due to misinformation.
    Understanding the UEFI BIOS Gigabyte H81M-S for Windows 10 Pro x64-screenshot-3-.pngUnderstanding the UEFI BIOS Gigabyte H81M-S for Windows 10 Pro x64-screenshot-4-.png

    What can you tell from these? I totally don't know anything about XMP,where it is, and how it's enabled..
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  7. CountMike's Avatar
    Posts : 18,354
    W10+Developer Insider + Linux
       #27

    That RAM doesn't have XMP profile otherwise it would show here
    Understanding the UEFI BIOS Gigabyte H81M-S for Windows 10 Pro x64-image.png
    I have same RAM on my FX 6350 machine.
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  8. inwell's Avatar
    Posts : 92
    Win10 Pro
    Thread Starter
       #28

    CountMike said:
    That RAM doesn't have XMP profile otherwise it would show here

    I have same RAM on my FX 6350 machine.
    Ohh ok.Thank you for the help.
    When this discussion is over,i will make the thread solved/closed.
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  9. Matthew Wai's Avatar
    Posts : 5,057
    Windows 10 Home 20H2
       #29

    sygnus21 said:
    whether your board supports XMP.
    The manual says "Support for Extreme Memory Profile (XMP) memory modules".

    sygnus21 said:
    Here's the bottom line.... If the board and RAM supports higher speeds than currently set you should enable XMP to get those higher speeds. CPU-Z can give you the info needed to make that decision.
    CPU-Z shows no XMP for my RAM.

    Understanding the UEFI BIOS Gigabyte H81M-S for Windows 10 Pro x64-cpu-z.jpg
      My Computer

  10. CountMike's Avatar
    Posts : 18,354
    W10+Developer Insider + Linux
       #30

    Matthew Wai said:
    The manual says "Support for Extreme Memory Profile (XMP) memory modules".


    CPU-Z shows no XMP for my RAM.

    Understanding the UEFI BIOS Gigabyte H81M-S for Windows 10 Pro x64-cpu-z.jpg
    Memory has to have XMP as well for them to work together. XMP is in the RAM's controller firmware. It's just a suggestion for BIOS how to set memory for best results. If it's not there BIOS uses only JEDEC values.
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