okay, i am running a 1.8 ghz p4 and a old geforce2, and i uffered little lag with a totoal poly count of a little over 80000. There are some things you should know about the sage engine and polys. First, only high poly animated models and particle FX will lag your computer, second, the lag for a non animated high poly unit is only when the unit is fist built. The prism tank is the only model with a poly count of over about 5000, the rest are below that. As for where i got them, go here:
http://www.cnc-source.com/files/pafi...on=file&id=267 there are many more models in there, including 2 helicopters, and new base walls for each side.