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How to reduce or disable shared RAM on Windows 10?

Anonymous
2023-05-10T16:01:10+00:00

I have a dedicated GPU with 8GB and 32GB of RAM but 16GB of RAM is being shared with the CPU; so de OS only can access 16GB.

In the B450-F Asus BIOS doesn't show any way to change this.

I don't know if this is being do it by the BIOS, the Nvidia drivers or by Windows itself.

Please help.

Windows for home | Windows 10 | Settings

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  1. Igor Leyko 110.6K Reputation points Independent Advisor
    2023-05-10T18:28:11+00:00

    Yes, this value MAY (but likely will not) given to a graphic driver if it will be needed for this driver. But system memory is slower than the graphic RAM, so it is used only when driver needs the memory strongly. So, this memory is used by Windows mostly.

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  1. Igor Leyko 110.6K Reputation points Independent Advisor
    2023-05-10T17:13:38+00:00

    Your Windows uses 32 GB RAM (31.9 to be exact), see numbers under Memory word.

    These 16 GB _may_ be shared if GPU will need them, right now it uses 0 GB of system memory.

    This is normal, no need to worry.

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  1. Anonymous
    2023-05-10T17:53:43+00:00

    So Windows is administrating the system shared memory with the GPU and is not locked to be used only for GPU? I'm worried because I never saw the used system memory go beyond 16GB, I have a couple of virtual machines and also heavy IDEs like Android Studio and MS VB.NET, with all that running never saw it goes over the 16GB "barrier". It seems like the systems optimizes the system used memory by each application to fit in 16GB.

    I don't want that the OS use the C: disk as RAM extension, that's why I have 32GB and not 8GB.

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  2. Anonymous
    2023-05-10T17:09:14+00:00

    I think that you misinterpreted what I tried to express; The GPU has 16GB of RAM plus its own 8BG of VRAM

    Maybe the capture will be more explanatory.

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  3. Igor Leyko 110.6K Reputation points Independent Advisor
    2023-05-10T16:34:25+00:00

    Hi,

    My name is Igor, it's a pleasure for me to help others and I'll do all my best to help you.

    CPU should not use RAM, only built-in GPU can, but 32 GB is too much.

    Please show a screenshots with your data. Run built-in resmon tool and show a screenshot of RAM tab.

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