a few month ago , I order the 20 mbp speed from my isp , upgrade from 12 mbp due to multiple reload of streaming hd movie such as Netflix and Amazon movie . however , the speed be inconsistent . from time to time , my speed test would burst to 17 to 18 mbp , but most often stay around 12 mbp . I call technician out , I swap modem provide by my isp -lrb- rca dcm425 -rrb- , and I replace the cabling in my house . all to no avail . speed still consistently float around 12 mbp with infrequent burst of up to 18 . after struggle for month with my isp over not get the speed I be pay for , I finally break down and buy this modem as a last resort . honestly , I do not think it would make that much of a difference . I be convince the problem be with my isp . imagine my surprise when I plug this thing up , have my isp provision it , and run a speed test . speed test after speed test show a average of around 19 mbp , with the lowest speed at 18 mbp , and with burst up to 25 mbp . the speed be consistent from test to test . they most often float between 18 and 20 , but 1 time out of 10 , I 'll get a result of 25 . the packaging be very simple and the instruction be only one page . if you be a techno-geek , you 'll love the diagnostic build into this modem . the modem provide the downstream power level , upstream power level , snr , and much more . these stats come in very handy when it be time to call you isp support tech . and , you can compare you result with optimal range , easily find by search online for modem snr , downstream power , etc. . I can not say whether this product will solve you speed problem , but it do not hurt to try . even if it do not speed you connection up , you can return you rental modem back in and save yourself several dollar per month . in my case , it be save I $ 8 per month - and that be enough to pay for the recent Netflix price increase . \*\*\*\* Update \*\*\*\* this product be still go strong . it be still much more stable than my old rca cable modem . I have far fewer drop internet connection and fewer call to tech support . speed be still impressive . even when my connection drop to half for what I pay , this modem continue to deliver stable and consistent speed . rarely do my online streaming movie reset the connection during the middle of the movie , even at the lower speed .