In the market for a new modem? Don’t forget to read the specifications. DOCSIS 2 modems are still in demand and available for purchase. However DOCSIS 3 modems include channel bonding which is a feature that provides much more speed capability. Channel bonding using multiple frequency channels on a modem to transmit data, thereby increasing the overall download and upload speed. For example the ARRIS Surfboard 32X Cable Modem - White (SB6190) is listed as a “32X”, which means 8 downstream by 4 upstream channels.-1 No, 32X isn’t the highest there are 256x modems available for gigabit speeds.
For the average user I would recommend a DOCSIS 3 modem. Although most users don’t require speeds in excess of 30 Mbps for future assurance of quality service, you should choose a DOCSIS 3 or higher. To me, the best thing about DOCSIS 3 is that you have the ability to maintain consistent download/upload speeds during peak service times with channel bonding.-2 Check with your internet provider to determine which channel bonding combination is best for your desired speed.
1- http://kb.netgear.com/app/answers/detail/a_id/24802/~/DOCSIS -2-vs.-DOCSIS -3-differences?cid=wmt_netgear_organic
2- https://www.youtube.com/watch?v=X4-9ZtThZHs (great description of channel bonding)
3- Based on the specifications of the ARRIS / Motorola SURFboard SB5101U DOCSIS 2.0 Cable Modem
4- Based on the specifications of the ARRIS - SURFboard 600 Series DOCSIS 3.0 Cable Modem – White - 32x
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