Put simply, the bandwidth is a measure of how quickly data can be sent through a circuit. It's usually measured in bits per second (bps). The larger the bandwidth of a line, the quicker it can transfer data. Think of a beach-bound, two-lane highway: day-to-day traffic flows just dandy, but on a heat-waved Labor Day weekend? Forget it - that quaint highway's a parking lot. But if the highway were replaced with an 8-lane freeway, you'd have the sand between your toes in no time. When it comes to bandwidth, a T3 is that 8-lane highway: It's about thirty times as fast as a T1 line, which is 50 times as fast as a 28.8 modem, which is twice as fast as a 14.4 (the two-lane highway). Though just because you're sitting at the end of a blazing T3 doesn't mean you're at the beach yet. You may be able to receive data like lightning, but if the info's being dished up via a meager connection on the server end, you still have to sit and wait for it just like everybody else.