32 to 64bit?

[AssaTM]

As I have a fairly "old" PC now and not really planned to upgrade until now, i've never really followed the 64bit advancement, can anyone tell me the major differences/advantages and disadvantages of 64bit to 32bit, as well as improvements etc of course , many thanks ;p

 

[dayloon]

There are dozens of threads on this already, if you search the forum i'm sure you will find your answer.