Originally Posted by williamxaviers
Its obvious that a 32-bit software will run and perform better in a 64-bit computer.
You are wrong. The performance will be the same, a 32-bit program isn't going to be able to suddenly take advantage of the added features in the 64-bit architecture. However since you can have more memory in the computer you can run a lot more 32-bit applications at once but beyond that there is no performance difference for 32-bit applications when running on a 64-bit OS.
Some 64-bit applications can run a lot better than their 32-bit versions such as graphics programs, crypto or any other math heavy programs. Or programs that can benefit from using a lot more memory.
Having 8+GB of RAM can be really nice these days given how cheap memory is. On my home computer I have 16GB of RAM and although I rarely use more than 30% of it, Windows uses the rest for the program cache so all the programs I use load pretty fast which is nice.