Re: I think it will be very difficult for AMD to get some developers to port to 64-bits when the architectural differences don't make much of a difference for their application.
Which is exactly why Itanium is doomed and AMD64 will soon be completely dominating servers, workstations, and high end (profitable) desktops.
For many, perhaps most, applications, 64-bits isn't necessary. It isn't even helpful. So those applications, however critical they may be to a few users, won't be ported to 64-bits. So Itanium will never run them. And if there is even one key application that you can't get for a given computer, then it's out of the running as a purchase option.
For the many applications that do benefit from 64-bits, there will soon be Opteron/Athlon 64 versions, and for the rest, they can just run at full speed as 32-bit applications.
But for Itanium, which has no libraries of millions of 32-bit applications to run, the user is just out of luck.
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