I have a 3 GHz P4, a 128 MB ATI 9800, and 2GB RAM, and EB runs good. Only if I fight a battle at a bridge (what I try to avoid), I get realy serious problems, with about 1 - 2 fps. It's really a pain, these battles take ages. In the open countryside, my Compi can handle 6000 to 7000 soldiers without problems, with 8000 it gets difficult already.