Originally Posted by Armed & Hammered

It really depends on the games you're running. Some are more processor and bandwidth intensive than others. I have personally had two 16 player counter-strike servers running on a decent P4 server and had no problems. I've hosted UT 2004 games as well as Battlefield 1942/Desert Combat servers (HUGE bandwidth hogs) but not at the same time.

For me, any ping over about 80 is too high.

As far as games go, I would say Desert Combat, Counter-Strike, Unreal Tournament 2004 or maybe even a little Quake 3.