If you have installed a 32-bit operating system, you may change it to a 64-bit system. But most of you may choose to install the 64-bit version instead of the 32-bit version. When installing Windows 7, 8 or Windows 10, you can choose to install 32-bit or 64-bit version of Windows.
The 32-bit version is also known as the x86 version while the 64-bit version is known as the 圆4 version. Microsoft offers both 32-bit and 64-bit versions of Windows 10/8/7. Why Upgrade 32 Bit to 64 Bit in Windows 10/8/7
Why Upgrade 32 Bit to 64 Bit in Windows 10/8/7.