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Hi, I have a 32-bit operating system of Vista Home Premium, with 3 GB of RAM, and a processor running at 2 GHz. I have passed the system requirements from Windows Upgrade Advisor. I want to upgrade to Windows 7 Professional, but I'm having a difficult time deciding which OS to choose from in Windows 7 Professional. Windows 7 Professional (x86) or Windows 7 Professional (x64)? It's a bit embarrassing, but I'm afraid I don't know the difference between the two. I would be grateful if someone could explain it to me. Thank you.

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Dani AI

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Good quick answers from and — they cover the basics. A few practical points that weren’t mentioned and that will affect the choice.

You cannot do an in-place upgrade from 32-bit Vista to 64-bit Windows 7. Switching architectures requires a clean install, so plan for a full backup of data, application installers, and license keys before you start. Make a short checklist: back up Documents, export browser bookmarks, note product keys, and create recovery media for the current system.

Check driver and legacy‑app compatibility before committing to x64. 64‑bit Windows needs 64‑bit drivers for chipset, video, wireless and printers; 32‑bit drivers will not work. Also, 16‑bit installers/apps won’t run on x64 — XP Mode (included with Windows 7 Professional) or a VM can run older software, but hardware virtualization support may be required. Visit the laptop/vendor support page and confirm Windows 7 x64 drivers exist for your model and for any critical peripherals.

A practical recommendation for the hardware posted: with 3 GB of RAM you’re unlikely to get a big performance win from x64 right away, and the OS itself uses a bit more memory. Choose x64 if you plan to add RAM (4 GB+) or need 64‑bit-only software. Choose x86 if you want maximum driver compatibility and minimal fuss. If you pick x64, download all drivers first, create installation media, perform a custom (clean) install, then install chipset and storage drivers before other peripherals.

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Member Avatar for Rik_

The 32bit version will work on sytems with 32bit and 64bit CPU's. The 64bit version will only work on a system with a 64bit CPU.

Do you know what type of CPU you have?

Edited by Rik_ because: n/a
Member Avatar for ikunu

Hi

The terms 32-bit and 64-bit refer to the way a computer's processor (or say CPU), handles information. The 64-bit version of Windows handles large amounts of random access memory (RAM) more effectively than a 32-bit system.

64 bit windows has improved performance and reliability, enhanced security, and an unprecedented level of compatibility.

Now if we look towards system specifications then a PC having 4GB (or more) RAM and atleast 2.5 GHz (or more) of processor have a good output in x64 bit windows.

Although we can use x64 bit in your system also but the performance will not be upto the mark.

So in this case a 32 BitWindows is recommended.

Member Avatar for Member #754357

The 32bit version will work on sytems with 32bit and 64bit CPU's. The 64bit version will only work on a system with a 64bit CPU.

Do you know what type of CPU you have?

AMD Turion X2 Dual-Core Mobile RM-70 2.00 GHz

Member Avatar for Rik_

That is a 64bit CPU so you can use either 32bit or 64bit windows 7! I am using windows 7 Ultimate 64bit right now and I have to say I really like it!

Member Avatar for Member #754357

I presume the 64-bit OS is Windows 7 Professional (x64) and the 32-bit OS is Windows 7 Professional (x86)?

Member Avatar for Rik_

You presume correctly!

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