In preparation for a RAM upgrade, a technician wants to know how much physical memory the operating system can address. According to Microsoft specifications, what is the maximum amount of RAM that a 64-bit installation of Windows 10 Home can use?
2 TB
There is no practical RAM limit in a 64-bit OS
64 GB
128 GB
Microsoft documentation lists a 128 GB ceiling for Windows 10 Home (64-bit). Higher editions raise this limit: Pro and Education support up to 2 TB, while Enterprise and Pro for Workstations can use as much as 6 TB. These limits are set by Microsoft licensing-not by the 64-bit architecture itself.
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