I installed Windows 8 x32 on my laptop. It has 3 GB RAM and the processor is x64-based. I don't use my laptop for much other than e-mail, Facebook, YouTube. Here are my questions: Is there any point to switch from x32 to x64? Is there any down side? I read somewhere that I won't be able to run 16-bit applications (I don't even know if they still exist)? Do I need to do a clean install, or can I use the Upgrade install option rather than the Custom (advanced) install option?