Define what you mean by "any lateness", specify your hardware, number of nodes, the amount of memory, the OS and JVM you're going to use.
Then test it yourself.
If you don't like his question don't post a response. There is no need to be a jerk - thats what the forums are for
I wasn't being a jerk. I gave him the only realistic answer. If you don't like it, you can go police some other forum.