What is the difference between Windows 10 32-bit and Windows 10 64-bit?
Windows 10 32-bit can run on either x86 or x64 hardware. Similar to Windows XP 32-bit, Windows 10 32-bit provides access only to 32-bit addresses. As a result, even though Windows 10 32-bit will run on x64 hardware, it is limited to using 4 gigabytes of RAM. Windows 10 32-bit cannot run 64-bit versions of drivers or software designed to run natively on 64-bit operating systems.
Windows 10 64-bit can be installed only on x64 hardware. This version of the operating system allows software to use 64-bit addresses to access hardware and can therefore access much larger memory spaces. In order to run successfully on Windows 10 64-bit, all drivers must have native 64-bit support. However, most 32-bit software applications can run within a Windows 10 64-bit emulation layer.
For more detailed information on the difference between Windows 32-bit and 64-bit, see Using NI Products on 32-bit and 64-bit Windows.