I have a "supposedly" 10mbps downstream connection, but it's cable so it's relevant to how busy the network is. It's loser to 6mbps most of the time .Upstream is pretty slow at 192kbps...
I have an old intel P4 now, but I'm going for a major upgrade in a few months and I'm definetly going to buy and AMD. They might have lower clock speeds but they have better performance for games