Want to Upgrade my Comcast Modem Tags: Performance Modem Motorola Cable Networking Last response: October 18, 2012 5:08 AM in Networking Share trchilson October 17, 2012 7:08:33 PM I'm looking to upgrade my SB-5100 Motorola Cable modem that I now rent from Comcast. My main objective is to increase my internet performance. More about : upgrade comcast modem john-b691 October 18, 2012 5:08:50 AM You could try a modem that has docsis 3 support but if comcast is only using docsis 2 in your area the new modem will just revert back to docsis 2. Modems are pretty stupid they either work or they don't. Can't find your answer ? Ask ! Publish Related resources: ForumBest modem for Comcast ??? ForumComcast says i need a new modem ; do I? ForumDo I really need a new modem for faster internet or is Comcast lying? ForumComcast Houston modem recommendations... ForumProblem with my Comcast Modem ForumWanting to watch Comcast through my pc ... ForumCan I replace Comcast ' modem /router with one on Amazon? ForumWhat comcast digital adapter can I buy? ForumUpgrading Router, Should I Upgrade My Modem Too? ForumBest modem for comcast plan ForumWill trendnet work with a comcast modem ? ForumSignal from Comcast interrupted throughout the day using a splitter ForumWill trendnet work with a comcast modem ? ForumDocsis 3 cable modem for comcast xfinity ForumHow to setup a 1GB Gigabyte Network ForumMy computer wont read my usb extension to my modem ForumI want to register with you ForumConnection/slow speed issues, modem vs router vs swtich ForumI want to active my new dlink 192 168 0 1 router how I can ForumHow Can I leave blogger if I want to make my own design? More resources Read discussions in other Networking categories Routers Gateways VPN LAN WAN Firewalls Cisco Netgear !