来自MSN

4 Quick Steps to Confirm If Your Windows Is 32-Bit or 64-Bit

See if your Windows 11, 10, 8, 7, Vista, or XP install is 32-bit or 64-bit Not sure if your installed version of Windows is 32-bit or 64-bit? One quick way to tell is by looking at information about ...
Ars Technica

If I install Windows 7 32-bit now, can I use the same key later to install 64-bit?

I've been following most of the Windows 7 threads and haven't seen this asked yet... Here's my dilemma. I have pretty old hardware although it will support 64-bit, and only 2GB RAM so I don't ...