as a Charter subscriber with a `` up to '' 100mb line , this modem have serve I very well . my speedtest result usually yield between the high 70 's and the low 90 's -lrb- in megabit per second , -rrb- but I believe that be a Charter throttle as oppose to a modem dysfunction . result with the 100mb package on my old docsis 2 modem be in the mid 20 's .