I have a 64 bit Windows 7 desktop PC (Intel i3 2nd generation 2120, 8 GB RAM). Software like Opera, VLC, uTorrent, CDBurnerXP and more are available in 32 as well as 64-bit versions and 64-bit Windows 7 can run 64 as well as 32-bit versions of applications (using WoW).
I understand that a 64-bit OS enables a larger address space. But it also uses 64-bit pointers that cause 64-bit applications to use more memory than their 32 bit versions.
What value-addition does running 64-bit versions of applications provide on a 64-bit OS?