I have a GeForce FX 5500 256MB and it runs better than i thought it would, ofc i have all graphic settings on low but it runs fine.
My others specs are:
AMD Athlon 64 3400+ 2.4Ghz
1GB RAM
More than 80GB of free space on my hardrive
It lags a little bit in the late game on a standard map size but nothing to complain about.
I have one problem with the game, it makes my PC reboot by itself after a couple of hours of play. If anyone knows why this happens plz post here or send me a PM thx.