Let me just finish... Yeah read the whole article it is interesting. By installing a RAMDisk you can use more than the 3GB of memory in 32 bit windows. Also with the virtual memory turned off it crashed in some tests. Unacceptable and kludgy.
I'm sticking with 32-bit for at least two more years, I shouldn't have to mess around with virtual machines to run old software, one example being Mavis Beacon typing of Windows 95 era. Pirates from Windows XP era is another example that doesn't like 64-bit.
The only thing that ever requires more than 3GB is some seriously huge productivity stuff. Why not just keep that away from your general purpose home computer.
Lastly: Hey if apple could have seamless emulation why can't windows?