View the full list of DOCSIS 3.1 Gigabit cable modems below. If you subscribe to Gigabit plans such as XFINITY 1 Gig or Gigabit Pro, Cable One GigaOne, or COX Gigablast, or Mediacom Xtream Gig, you’ll need a DOCSIS 3.1 modem. Some may be offered only through your cable company. However, some companies may let you buy your own modem.


DOCSIS 3.1 Modems List

These DOCSIS 3.1 modems do not have WiFi built-in. For optimal performance, use a WiFi-6 or WiFi-6E router. There are 3 modems on this list that also have voice capabilities.

Brand / MPNVoice CompatibilityTop SpeedEst. Price
ARRIS SURFboard S33No2.5 Gbps$199.99
ARRIS SURFboard SB8200No1 Gbps$142.11
ARRIS SURFboard T25Yes1 Gbps$177.00
NETGEAR CM1000No1 Gbps$169.99
NETGEAR CM1150VYes1 Gbps$249.99
NETGEAR CM1200No2 Gbps$199.99
NETGEAR CM2000No2.5 Gbps$199.99
NETGEAR CM2050VYes2.5 Gbps$242.97
Motorola MB8611No2.5 Gbps$149.99
DOCSIS 3.1 Modems List: No WiFi

DOCSIS 3.1 Modem Router Combos

The modems on this list are DOCSIS 3.1 with built-in WiFi. You will see the type of WiFi outlined below. AC2350 = WiFi-5 @2350 Mbps. AC is a.k.a. WiFi-5 and AX is WiFi-6. The set of numbers that follow are the speed at which the router will operate in Mbps.

Brand / MPNWireless TypeVoice CompatibilityTop SpeedEst. Price
ARRIS SURFboard G34 / G36AX3000No2.5 Gbps$279 / $299
ARRIS SURFboard SBG8300AC2350No1 Gbps$296.00
ASUS CMAX6000AX6000No1 Gbps$349.99
NETGEAR Nighthawk CAX80AX6000No1.2 Gbps$384.00
NETGEAR Nighthawk CAX30 / CAX30SAX2700No1 Gbps$312.18
NETGEAR Nighthawk C7800AC3200No1 Gbps$329.99
NETGEAR Orbi CBR750AX4200No1 Gbps$379.99
Motorola Zoom MG8702AC3200No1 Gbps$269.99
DOCSIS 3.1 Modem Router Combos w/ WiFi

DOCSIS 3.1 vs DOCSIS 3.0

DOCSIS 3.1 can provide download speeds up to 10 Gbps and upload speeds up to 1 Gbps. On the other side, DOCSIS 3.0 can provide download speeds up to 1 Gbps and 300 Mbps upload speeds. Additionally, with each upgrade in DOCSIS comes higher security.

Some Internet Providers such as Midco and Mediacom tell their customers they can only use a DOCSIS 3.1 cable modem.

Best DOCSIS 3.1 Modem

ARRIS SURFboard SB8200 DOCSIS 3.1 Modem
ARRIS SURFboard SB8200 DOCSIS 3.1 Modem

The ARRIS SB8200 is the top DOCSIS 3.1 modem in terms of the number of units sold. It also has the best feedback among Comcast 1 Gig and COX Gigablast subscribers. The SB8200 is perfect for 1000 Mbps tiers and lower. With a price point of only $149.99, it is also the cheapest DOCSIS 3.1 modem available today. View more about the ARRIS SURFboard SB8200.

Do I Need a DOCSIS 3.1 Cable Modem?

If you subscribe to XFINITY Gig, COX Gigablast, or other like speeds from other providers, yes. You will need to use one of these or one provided by your Internet provider.

Resources:

Introducing XFINITY Gigabit Internet