One BYTE, is 8 BIT, AFAIK. Say you had an internet connection running at 8128KB/s - Divide it by EIGHT, and that, in THEORY is the max speed you could get. Other factors knock it down to around 830Kb/s.
All of your network gear would burst into flames before you had a chance to reach 100% utilization on that kind of speed. Japan might spontaneously combust tomorrow. Keep an eye out.