This computer has a 64 bit ready motherboard and an AMD Phenom 9500 cpu. It originally had Windows Vista Hope Premium 32 bit os installed. I had trouble with Vista eventually an bought Windows 7. both 32 bit and 64 bit. I installed the 32 bit version. Now I'm wondering if the 64 bit version would work better as I get ready to upgrade to Windows 10, because 64 bit systems address more memory. Can anyone help me out?