unity out of memory?

How much memory is Unity allowed to use (everything in SystemInfo.systemMemorySize)? How does Unity respond when it runs out of memory-- crash? out of memory error? null pointer exceptions?

How much memory is Unity allowed to use?

You can open up your Mac's Activity Monitor to see how much the app is using

(~/Applications/Utilities/ActivityMonitor.app)

How does Unity respond when it runs out of memory-- crash? out of memory error? null pointer exceptions?

You may want to check this Unify Community thread out as well.

Also, Unity's Profile is pretty useful (Pro Only)

From my own experience I can tell, Unity can use up memory until your system runs out of free physical memory (in my case that was around 2GB). Then the application becomes very very slow for a few seconds and Unity crashes to desktop.