Sorry for double posting, I can't find an edit option anywhere.
At
hi density low density ram I see this
"Also note that any application running in Windows XP 32bit is limited to 2GB and will not address anything above 2GB. This is lifted in 64bit, however if you are running a 32bit application in a 64bit OS, you still have the 2GB limit."
So how does more RAM benefit me then?