Memtest and missing (PCI) memory addresses


  1. hucker
    Posts : 73
    Windows 7 Ultimate x64
       New #1

    Memtest and missing (PCI) memory addresses


    If I place a single 4GB stick in my machine and run memtest, I see it's testing only 3.7GB. I assume this is the PCI memory map taking 0.3GB. Does this mean I'm not actually testing all the memory or am I missing something?
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  3. essenbe
    Posts : 26,869
    Windows 11 Pro
       New #2

    I really don't know the answer, but an assumption would be that it takes some memory to run the computer and the test.
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  4. hucker
    Posts : 73
    Windows 7 Ultimate x64
    Thread Starter
       New #3

    Hmmmm so I'm not actually testing all the memory then?
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