32-bit and 64-bit:
What is the difference between 32-bit and 64-bit versions of Windows?
The terms 32-bit and 64-bit refer to the way a computer’s processor (also called a CPU) handles information. The 32-bit and 64-bit versions are designed for use in computers with 32-bit and 64-bit processors, respectively.
Can my computer run a 64-bit version of Windows?
To run a 64-bit version of Windows, your computer must have a 64-bit processor. To find your computer's processor speed, do the following:
1. Open System by clicking the Start button , clicking Control Panel, clicking System and Maintenance, and then clicking System.
2. Under System, you can view the processor type and speed.
Can I upgrade from a 32-bit version of Windows to a 64-bit version of Windows?
No. If you are currently running a 32-bit version of Windows, you can only perform an upgrade to another 32-bit version of Windows. Similarly, if you are running a 64-bit version of Windows Vista, you can only perform an upgrade to another 64-bit version of Windows Vista.
Can I run 32-bit programs on a 64-bit computer?
Many programs designed for a computer running a 32-bit version of Windows will work on a computer running 64-bit versions of Windows without any changes. However, in some cases there might be differences in performance. If you have a 64-bit computer, it's best to run programs designed to run on a 64-bit computer.
Would I benefit from using a 64-bit computer?
A 64-bit computer can process twice as much information as a 32-bit computer, and can have significantly more random access memory (RAM). This makes a 64-bit computer a good choice if you're working with video, large database searches, or games and other programs that require complex calculations and a lot of memory. A 32-bit computer works very well for most programs, however. For example, spreadsheet programs, web browsers, and word processing programs will run at about the same speed on either a 32-bit or a 64-bit computer.
If I'm running a 64-bit version of Windows, do I need 64-bit drivers for my devices?
Yes, all hardware devices need 64-bit drivers to work on a 64-bit version of Windows. To learn how to check for drivers, see Repair or update a driver or go to the device manufacturer's website. You can also get information about drivers by going to the Windows Vista Upgrade Advisor website.
Should I purchase the 32-bit or the 64-bit version of Windows Vista?
If you have a processor that is capable of handling 64-bit instructions then their is no reason to go for the 32-bit edition. You won't see a massive performance increase going from a 32-bit to a 64-bit operating system as of yet since many programs have been written for 32-bit architectures.
However this will be changing in the future because with 64bit being more recognized, more and more programs will be written under 64-bit architectures. When programs are released that are written specifically for 64-bit, you will then start to see a performance increase from 32-bit applications.
The only real concern i can see some of you may have about going to Vista 64-bit is the whole compatibility issue. When Windows Vista was first released their were quite a few problems concerning the compatibility of hardware and software. However, the support for Windows Vista is now excellent and the majority of hardware and software that is currently out their now work absolutely fine on Vista x64. This support will only get better so have no hesitation going for Vista 64-bit.