How to figure out how much ram my game needs ? - not decided between building on x64 or x86

Hi. How can I know how much ram my game will use. I have some friend that have systems on x86, others on x64 and wish they could test my game. Since on my system, I guess it would take 8-10 hours for the build to finish, I need to choose a single option. Could you give me some tips ?

well, if you’re talking x86 the memory limit is 4GB, but a portion of that is dedicated to the OS.

I would say, do not support 32-Bit, if you are on a computer that has 32-Bit then they probably can’t run the game anyways.

I've tried to package for 32 bits, but after 7 hours of trying to package an 1.5 Gb project I stopped it. Tomorrow I'll leave it for 12 hours to compile for x64.  Is packaging for x64 faster than x32 ? Also, is there a

way to see the packaging progress -a percent or something ?

I remember when I had those packaging times…

The more ram the better…

~ Jason