I thought the theoretical limit for win32 is 2Gb per application, with a breakdown of Vue around 1.5Gb from experience.

I'm afraid there is not many solutions to that problem.

Either get an OS that allows more memory per application (win64 or Mac OS) - expensive.
Or apply strategies to reduce the amount of memory used by Vue - time consuming but possible,

You can use smalled texture maps, limit the number of Undo to 2 or 3, disable OpenGL preview, set the preview window to render on click (and not always render), compose your scenes in smaller chunks instead of one huge scene (unless you do animation)... things of that nature.

• agiel - www.linfa.net