well as with most 64 bit applications your not going to notice a difference unless you need more memory, and in most cases 64 bit aplications are even a little slower than the 32 bit counterparts because there is more system overhead. so things like models with millions and billions of polies you will notice a difference,…
got to crash it on my first try to test the improved speed... created a highly subdivided box (200x200x200) and toggled in/out of max. but in total it really is faster. the viewport "statistics" could be a bit better, as it is not always updating itself properly and there is no "polycounter" anymore about 64 and 32 bit,…
you dont have to buy 2 licenses when you buy max 9 it comes with both versions, and the files are compatible so you can open files from the 32 bit version and use them on the 64 bit version and vice versa. great if you plan on upgrading your os down the line.