What are the major differences between 64-bit and 32-bit OS? And do they require different hardware?

Question

I am looking for more information and details about 64-bit Operating Systems (including both XP Professional and Vista Ultimate) and if they require any special motherboards or processors? Specifically, I would just like to know the major differences between 32-bit and 64-bit architectures in terms of the software environment (OS).

I am building a computer that will have 8gb of RAM. So sufficient memory is not a problem; however, I am interested in a 64-bit architecture because from what I understand it has more functionality. In addition, I am a power user who makes wide use of various technology, including the lateset software that might require a 64-bit environment.

Answer 1

64bit OSes can only run on 64bit CPUs. 32 bit OSes can run on either 32bit or 64bit CPUs. Current CPUs are 64bit anyway though. 64bit OSes on 64bit CPUs run faster, but there are not a lot of 64bit drivers available. Most consumers have 32bit OSes.

Shame on the first Answerer for saying that 64bit is for developers. That is like saying the wireless A/B standards are for office buildings. Also, 32bit can address a lot more than 3Gigs of memory. Motherboard manufacturers just didn't see a need to have more than 4 Gigs on most motherboards years ago. Yahoo lets any ignorant person answer computer questions.

Although current and new software applications may have a 64bit version available, 64bit software versions are still relatively rare, because most consumers/corporations still have 32bit environments. 32bit applications will continue to be the standard for years to come. I would advise you to choose the 32bit OS. If you choose a 64bit OS, then you may very well have a hard time finding all the drivers that you need. Also, there are not a lot of Vista drivers available right now. In fact, Asus still has Vista Beta versions of BIOS.

When it comes to 64bit computer building, any new CPU that you pick will be 64bit. As for the rest of the hardware, just make sure that 64bit drivers are available (Vista versions if you're going with Vista).

32bit is still the environment of choice, regardless of the status of the end-user.

Answer 2

1. Theoretically yes, but in normal use you won't see/feel any difference. It's only when doing processor intensive tasks like video encoding that you'll spot the difference. The real main advantage of 64 bit is the ability to handle a much higher amount of installed RAM and to 'see' it correctly - 32 bit Windows systems can only 'see' just over 3 GB, even if you had 8 GB installed. 2. Any modern CPU/Motherboard should support it. It would have to be 3 or more years older not to support 64 bit.. 3. Any 32 bit program should also run on 64 bit. You may need 64 bit hardware drivers though, which are not always easy to source. If you're think you'll get double performance - you won't., or anything even close to that. Despite it being out for years, it's almost impossible to run a pure 64 bit system, there is still no (official) 64 bit version of the Flash browser plugin for example.

Answer 3

there is no diffrence. i do not know y ppl put x64 on there computers. there is limited driver support. 64 bit is 4 developers, it make use of 3gb or more of memory. u do not need it, stick with 32 bit, there is no diffrence.