Should I use 32bit version of ubuntu 12.10 or 64bit version?

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http://askubuntu.com – After using Ubuntu 12.10 for awhile on a separate computer, I decided to dual boot on my windows machine. The only bad thing is that I do not know which version of Ubuntu 12.10 to use 32bit or 64bit. I have been using 12.10 on another computer but it was as 32bit version and people have been saying that some hardware might not be supported in 64bit. My build is: -i5 3570k -nvidia 560ti -8gb ram -Asus mobo -Two drives (320gb and 1tb) Any help on which version to use is greatly appreciated (HowTos)