Capped broadband offers you Guaranteed Unshaped access 24 / 7 with a usage limit. Because Capped accounts have an ultimate usage limit, we give this product type a very high priority on the network. This means that When a Capped client requests something from the web, they will receive it before an Uncapped client.
Now day-to-day this does not really make a big difference, but when a network event such as a cable break occurs, Capped clients will hardly notice the issue, where Uncapped clients might experience a slower performance.
If latency is important to you, such as Gaming, Streaming and VOIP, Capped is definitely the right option for you due to the extremely high priority it gets on the network.