windows 7 memory limits? speed and capacity?

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  1. Posts : 13
    Windows 7 Professional X64
       #1

    windows 7 memory limits? speed and capacity?


    hey everyone.. im curious if anyone has the numbers for windows 7 memory limits, im using 64 bit ultimate, and i know capacity its capable of some number ive never met a motherboard that could even handle.. but, what about the speed/frequency of the memory? i hear theres a limit somewhere, and faster RAM gets throttled down to match the OS.. is this true? if so, whats the limit?
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  2. Posts : 25,847
    Windows 10 Pro. 64/ version 1709 Windows 7 Pro/64
       #2

    Memory speed is is controlled by the bios, the ram, cpu, motherboard you have installed before it ever gets to the operating system. I know of no speed limit for ram in Windows 7.
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  3. Posts : 13
    Windows 7 Professional X64
    Thread Starter
       #3

    i heard windows itself had a limit, which is less than the limits of the newer motherboards
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  4. Posts : 25,847
    Windows 10 Pro. 64/ version 1709 Windows 7 Pro/64
       #4

    Okay where did you hear that? Windows 7 Pro has a amount limit of 192 gig but no speed is mentioned any place I have looked.
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  5. Posts : 13
    Windows 7 Professional X64
    Thread Starter
       #5

    its third party information, which is why im looking here for a confirmation and proof that there is such a limit, or proof that there isnt
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  6. Posts : 1
    Windows Home Premium 64bit
       #6

    1332Mhz
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  7. Posts : 21,482
    Win 7 x64 Home Premium (and x86 VirtualBox VM)/Win10
       #7

    So far as I'm aware, there are no speed restrictions on modern Windows memory - unlike the older DOS-based Windows 9x series, and possibly Windows NT.
    Modern RAM has speeds well exceeding 1332MHz - and even Windows XP will run happily on higher speeds than that.
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  8. Posts : 2,497
    Windows 7 Pro 64 bit
       #8

    The OS has no idea what RAM speed is and couldn't care less. The very idea is alien to any OS. Speed limits are imposed by your hardware, not the OS.
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  9. Posts : 21,482
    Win 7 x64 Home Premium (and x86 VirtualBox VM)/Win10
       #9

    LMiller7 said:
    The OS has no idea what RAM speed is and couldn't care less. The very idea is alien to any OS. Speed limits are imposed by your hardware, not the OS.
    Not quite true, I'm afraid - DOS was very aware of RAM speed, and had issues with anything that exceeded its parameters.
    More recent Windows versions have been less dependent on the hardware.
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  10. Posts : 21,482
    Win 7 x64 Home Premium (and x86 VirtualBox VM)/Win10
       #10

    LMiller7 said:
    The OS has no idea what RAM speed is and couldn't care less. The very idea is alien to any OS. Speed limits are imposed by your hardware, not the OS.
    Not quite true, I'm afraid.
    Win9x and DOS were very dependent on RAM speed - but later incarnations are very much more independent of the hardware.
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