Porting 32 bit C++ code to 64 bit - is it worth it? Why?

Question

I am aware of some the obvious gains of the x64 architecture (higher addressable RAM addresses, etc)... but:

• What if my program has no real need to run in nati

Answer 1

In the case of a dll being called from a 64 bits process then the dll have to be 64 bits as well. Then it does not matter if it's worth it, you simply have no choice.