, spivonious wrote

Word, Excel, and homegrown VB6 apps don't benefit at all from a move to 64-bit.

Not exactly. Any 32-bit applications can get full 32-bit range of address space in 64-bit environment, if the machine have more than enough RAM (It's not that they can't have that in 32-bit machine, but some of the memory content will be on disk then, and this could mean a performance hit).

This fact can be useful for applications made with out-of-proc COM+ components.