I have manually installed Windows 7 Ultimate on my AMD on 32-bit, but I am not sure if I have 32 or 64 bit.
My Windows 7 system (CP) tells me I have a 32-bit OS, but that my processor is a AMD Athlon64.
So, do I have a 32 or 64 bit?
Is it better to use 64 bit? I don't think so; a lot of programs tell at their websites 'only 32-bit'. It still works, but that would be because I have installed Windows 7 as 32-bit.