My system
- P4 2,0 GHZ
- 512 MB DDR Ram
- ATI Mobility Radeon M6-P (32 MB)

has handeled about 5000 Units, only Problem: Textures on battlefield are very low and shadows don´t work. But units are fine in high detail just as the buildings...

I was positively surprised by that, as the demo didn´t work on my system. Anyway, I bought Rome..(these total war games are addictive..)