DOCSIS 3.1 is the current standard for high-speed cable internet, supporting download speeds up to 10 Gbps and upload speeds up to 1 Gbps. If your internet plan offers speeds above 300 Mbps, a DOCSIS 3.1 modem is the right choice to get the full performance you are paying for.
Upgrading to your own DOCSIS 3.1 modem also eliminates the monthly rental fee most cable providers charge, which typically runs between $10 and $15 per month. That means the modem can pay for itself in less than a year.
What to Look For in a DOCSIS 3.1 Modem
The most important specs to compare are the number of OFDM channels, the number of bonded DOCSIS 3.0 channels (for backward compatibility), and the Ethernet port type. Models with a 2.5 Gigabit Ethernet port are ideal for gigabit plans, since a standard 1 Gigabit port can bottleneck speeds above roughly 940 Mbps.
Before purchasing, always confirm that the modem you choose appears on your ISP's approved device list. Most DOCSIS 3.1 modems are compatible with Xfinity, Spectrum, Cox, Mediacom, Sparklight and other major cable providers, but activation requirements vary.
Who Needs DOCSIS 3.1?
If your cable internet plan delivers 500 Mbps or faster, DOCSIS 3.1 is strongly recommended. It is also a smart pick for plans in the 300 to 500 Mbps range if you want headroom for future speed upgrades without buying another modem. For plans under 300 Mbps, a DOCSIS 3.0 modem may still be sufficient.
Browse our recommended DOCSIS 3.1 modems below to find the best match for your internet plan, budget and ISP.
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