

Is 100 Mbps fast? Yes, a speed of 100 Mbps is considered a good download speed.With 400 Mbps speed, you'll have no trouble downloading videos, online gaming, videoconferencing, and more. Is 400 Mbps a good internet speed? Yes, 400 Mbps is on the faster end of the internet speed spectrum.

However, it's not a good speed for more data-intensive tasks, such as downloading videos or playing games online.

CenturyLink Broadband Speed Test (Quest).

Here's more on the official internet speed test sites for a number of popular internet service providers: While it's possible that some of the other more generic speed tests further down our list are technically more accurate, it'll be a hard case to make to your ISP that your service isn't as fast as it should be unless you can show the same with the bandwidth tests they provide. Testing your internet speed between you and your internet service provider is the best way to go if you're planning on making an argument with your ISP about your slow internet connection.
