Is the "ubuntustudio-12.04.3-dvd-i386.iso" file 64 bit or 32 bit? If I have to download 64 bit version for my Intel PC (which has a 64 bit processor), which one should I download?
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This link: Difference between the i386 download and the amd64? solves it.. if you need a 64 bit version, it's amd64 that you're looking for.. – rusty Jan 26 '14 at 17:31
2 Answers
Here is the link for 64bit (AMD) download and you can install in intel also
http://www.ubuntu.com/download/desktop
All Intel Core 2 Duo and Intel Core i3, i5 and i7 support either 32 Bit or 64 bit. You will not have a problem with this. With what you might have a problem is with the amount of memory you need. For 32 Bit the minimum for a good running system is 512MB, the maximum is 4GB. For 64Bit the minimum recommended is 2GB and the maximum is "let your imagination fly!!!". I have tested 64Bit versions on 1GB and they can run very slow sometimes. The more memory the better.
If your Core 2 Duo laptop has at least 4 GB of ram I would recommend 64 bit but since it is a laptop and the more memory you have in a 64 bit the better, I would recommend sticking with the 32 Bit version. You actually don't loose to try both but for your case I would go more with the 32 Bit version (Except if it is some kind of 4GB+ Ram Laptop).

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32 and 64 bit go with several different names, listed below:
32 bit
i386
i586
i686
x86
64 bit
amd64
x86_64
So, to answer your question, "ubuntustudio-12.04.3-dvd-i386.iso" is 32 bit because it has i386
in it.
To download the 64 bit version, get a .iso file with one of the 64 bit names in its filename.

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