How fast is your current broadband Home What is superfast broadband How fast is your current broadband How fast is your current broadband? You can find out your current broadband speeds using the thinkbroadband speed tester below, which should work on the majority of internet browsers and devices. Make sure that you are as close as possible to your router when carrying out the speedtest. Connecting to your router with a network cable will produce the most accurate results. If you experience any issues with the tester, please read the troubleshooting section on thinkbroadband's own page.