Can't understand the question, how much is enough one server womza one 1000kbs stream from the program wirecast or XSplit or the like. The stream then is inserted in the player rtmp link and then on the website. Will that be enough for 1000 people? Support there keeping quiet, apparently reluctant to communicate and perepisyvatsya with a noob in this topic.
If that PC settings
conventional network card, probably 1000Mb