Telecom and Media Giants Virgin Media today said they will test the world's fastest brodband with download speed upto 1.5gbps. Which means that customers could download a high-quality movie or video game in just 55 seconds. Trials of the super-fast internet connections will begin this month at four companies near Old Street, in London, dubbed the 'Silicon Roundabout', but the service will eventually be used in homes as well as offices.