Virtual Memory Compared to the 400X

I think pretty much everyone understands that a 64-bit OS Is much preferable to a 32-bit OS. However, reading the various posts, performance is highly dependent on the particular system so one size does not fit all and performance varies among 64-bit environments.. Sooooo I have a question. Only as far as virtual memory is concerned and with all other hardware and software factors remaining constant, does the NGX use: 1. More virtual memory (how much more ?)2. Less virtual memory (how much less ?)3. About the same This is a benchmarking question hopefully the developers can answer. If anyone else has any input, please let me know. Thanks,Zach