8 Gigs of RAM. I can run more bots at once, seemingly just not in the same client.
EDIT: Also adding that when I run multiple bots over night, some clients always seem to crash at some point while the rest stay OK.
... or is that a hardware issue? Whenever I try running a 4th bot in the same client it freezes and stays black with the Osbot logo showing.
I also often encounter java freezing/client crashing. What might cause it?