How strong is youre computer...

Today we tried to do the enviroment shot "better". with that i meen we tried to use particle system to make all the buildings in the background. That was hard! All the production computers were to low on "RAM" to manage such a big task, when we tryed to duplicate one of the bigger buildings to 200. So what do you do? You turn to youre own hardware and suddenly it whent smooth as soap. So got a earlier file, but with the particle system in place.