Quote: Originally Posted by pparks1
You cannot upgrade from a 32-bit OS to a 64-bit OS. You will have to backup data, clean install and then reinstall the software apps that you are going to use.
Plus, 32-bit versions can handle up to 4GB of RAM..so if you only have 2GB of RAM...that's not a good reason to move to 64-bit. There is a bit more overhead with 64-bit apps...so I wouldn't recommend making the switch until you have at least 4GB of RAM.
I m using 64bit with 2 GB and it has not hampered the performance. Infact, the speed and overall performance is increased to some extent. I m very happy with 64bit. I will make it 4 GB by the end of this month.