The amount of Memory (RAM) displayed in the System Properties window is less than the amount of RAM physically installed in the computer.
The amount of Random Access Memory (RAM) available to the operating system may be less than the amount of RAM physically installed in the computer. Some video adapters, antivirus applications, and the BIOS cache may utilize system memory. This memory may no longer be available to the operating system and may not be listed in the System Properties window.
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