11n - 40-50 Mbps typical, varying greatly depending on configuration, whether it is mixed or N-only network, the number of bonded channels, etc. Specifying a channel, and using 40MHz channels can help achieve 70-80Mbps with some newer routers. With modern fiber systems achieving up to 1. 7 petabits per second, understanding fiber optic cable bandwidth capabilities is crucial for making informed infrastructure decisions. While a Cat6 cable tops out around 10 Gbps over short distances, fiber can reach terabit-level capacities under the right conditions – orders of magnitude more.