with my previous DOCSIS 2.0 modem it be almost impossible for I to use the internet at certain time of day . Performance would be great at like 3am or other low-traffic time , but from about 4pm to 8pm my internet would be cripple . I be confident my other modem be functional and that there be not any issue with Comcast . so I decide to give this modem a shot and see if have multiple channel in use would make a difference . after two week of use I can say that here really be not a major increase in top speed , but I have experience a incredible increase in reliability . I can hop on my computer I use the internet any time of day without any trouble at all . so the DOCSIS 3.0 support for multiple channel be a huge benefit . I would definitely recommend upgrade to a DOCSIS 3.0 modem if you be use a older model and experience slow speed at specific time of day .