Depends on what they are accessing. If one pc starts pulling the max, say a large download, and then the other 7 start downloading a large file they can all slow down or the first will slow down just a little and the rest will be painfully slow. All depends on how the router handles the connections. Without setting QoS, beyond this discussion, you can't really do much about it. If all you have is a 320kb/s line then ideally the 8 computers would be limited to 40kb/s if all were maxed out at the same time say, downloading torrents. Unfortunately equal speed like that doesn't happen in real life. Gameing shouldn't be a big problem, but could be. Too many variables to go through. Only thing you can do is hook them up and see how things go.