Still having the problem that the game freezes after a couple of hours. It is just annoying, everytime I have to restart the OSbot client, but it seems that I'm not the only one facing this problem. Saw a report about this 2 days ago.
You can calculate it yourself.
A OSBot client takes about 280mb ram of your system, if you want 50 accounts x 280mb = 14000mb so 14GB ram.
So I prefer to buy a system with 16gb ram for good stability and a modern processor, quad core xeon will be fine.