Best Answer: 3 mbps is considered broadband speed 10 mbps is a fast connection 20 mbps is outstanding Speaking of which, you can check your actual internet connection speed at http://speedtest.net/ Sometimes the numbers differ significantly from what your Internet Service Provider claims you've been given.Source(s):est Answer: 3 mbps is considered broadband speed 10 mbps is a fast connection 20 mbps is outstanding Speaking of which, you can check your actual internet connection speed at http://speedtest.net/ Sometimes the numbers differ significantly from what your Internet Service Provider claims you've been given. Source(s):