32/64 Bit

Hello guys, I have a question to ask. It might seem stupid but i don’t know…
What is the different between 32 or 64 bit… (example: Windows XP 32 bit or 64 bit) Can they run on any system or do some systems only run certain ones. ?
And what is better?
Answer #1
Well, since it is 64 bit you’ll be able to use a 64 setting desktop menu. Your computer will be a little faster and would look a little better. Also, you would be able to use more than 4 GB of RAM if it’s relevant for you. When installing Windows XP X64 you won’t need to mount SATA drivers as well as they are already combined with the installation. Good luck mate^^
Answer #2
don’t use xp 64 i did within a day or two i said ~censored~ it and then i installed vista 64.which runs 200x better.if you play games a lot stick to a 32bit os because you’ll get higher fps.