Windows 10: Can I upgrade from Windows 10 x86 to Windows 10 x64?

This shows that your CPU is 64-bit, great. Now please determine the maximum memory the computer can handle so we can move forward on what you need to know. Whether the result is good or bad news, the best way to use your computer can be determined.

 

I like to use this little utility from Gibson Research that will report whether or not the cpu is 64-bit capable or not.

GRC | SecurAble: Determine Processor Security Features |  

 

Well, the only way is the try.
I might try the x64, and I post the results.

 

Another thing to bear in mind is that if your system is 32 bit and only supports 4GB of memory, your system will still boot and run fine with, for example, 8GB installed. Windows will use the first 4GB and extra memory will just sit there all day doing nothing. If you then upgrade to 64 bit, it will use the full 8GB.

 

Probably the best idea. Your main issue will be if drivers exist for x64 or not (I run x64 as I can't get x32 drivers for my 2006 MacBook). If they exist try it.

You'll notice x64 is a couple of GB larger (which may or may not be important to you) but there are security advantages to run x64 as mentioned above. I don't care about that and run 32 bit (which subjectively seems to run faster on my old hardware) mainly for it taking less space. I never properly tested the speed so may be talking out of my hat on that front - could be my imagination.

For all the nay-sayers, the new Snapdragon based Windows is 32 bit only (64 bit programs will not even run) so 32 bit support isn't planned to be going away yet. But then Win RT didn't last so who knows. We will see *Smile

 

Didn't you see my post regarding the Securable utility?

 

Excellent summary.