Hey Guys,
I am purchasing Windows XP Pro for my PC and it has x86. I wanted to know if my system is compatible with it.
My mobo is a DFI Infinity NF570 M2/G
and my CPU is AMD Athlon 64x2 6400+
However with an x86 version of XP or Vista you'll only be able to utilize < 4GB (~3.25 to 3.8) of RAM. So if you want (or if you're going to install) more than 4 GB of RAM, you'll need a 64-bit Operating System. XP comes in a 64-bit version (some people swear by it - others say avoid it like the plague) and Vista comes in 64-bit as well.
I for one recommend Vista over XP and 64-bit over 32-bit. But that is just my opinion!
Also it looks like you'll have drivers for XP or Vista 32/64 on the DFI website, so things should function fine for you.