Best Docsis 3.0 Cable Modem for Comcast

Best Docsis 3.0 Cable Modem for Comcast – The best cable modem probably isn’t something you think about, but it should be at the front of your mind the next time you get your internet bill. If you buy your own cable modem instead of using whatever your internet service provider dropped off, you can probably save money on your internet service by eliminating a needless equipment rental fee.


1.ARRIS SURFboard SB8200

New DOCSIS 3.1 tech gives the SB8200 enough power for 2 Gbps speeds.

The SURFboard SB8200 uses newer DOCSIS 3.1 technology to support download speeds up to 2,000 Mbps (or 2 Gbps).3 That’s perfect if you’re rocking Xfinity’s Gigabit internet plan—or if you’re running your home business on its 2,000 Mbps Gigabit Pro plan.

We’ve recommended ARRIS’s SURFboard routers before, so it’s no surprise to us that the SB8200 made it into our top-five lineup.

2.Motorola MB7621

A low price and speeds up to a gig make the MB7621 best for most Xfinity plans.

The Motorola MB7621 is an Xfinity-certified cable modem that comes with wired speeds of up to 1,000 Mbps.1 That covers pretty much every single Xfinity internet plan (aside from its extremely limited 2,000 Mbps plan).

At about 8 inches tall and 2 inches wide, the MB7621 is fairly inconspicuous. That’s perfect if you’re trying to keep electronic equipment from being the star of your home office.


If you don’t get Xfinity’s Gigabit plan, you can save a little money with the budget-priced NETGEAR CM500 modem. It supports wired internet speeds up to 680 Mbps.2

User reviews of the CM500 note that its installation was a breeze. So if you’re putting off getting your own modem because you’re not tech-savvy, give the CM500 a go.

Our only complaint about this modem (and all NETGEAR modems) is that it comes with only a one-year, limited hardware warranty.


NETGEAR CM1000 is also one of the latest cable modems, despite supporting DOCSIS 3.1, it’s not exactly a high-speed modem offering slower transfer rates than the DOCSIS 3.1 ARRIS SB8200. The company could have made this product better by using better Ethernet ports, as the current limitation for the DOCSIS 3.1 connection in this product is the 1 Gbps Ethernet ports.

If the Ethernet ports would have provided better transfer rates, then a maximum transfer rate of 6 Gbps could have been achieved. This isn’t a huge deal since internet speeds will still only rarely meet this standard, but all things being equal this costs more for less speed than the SB8200.


If you don’t want to spend too much money and have the Performance Pro internet plan or below, the Motorola MG7540 is perfect for you.

During testing, its Wi-Fi reached 301.85 Mbps from 5 feet, 102.38 Mbps from 25 feet, and 49.06 Mbps from 50 feet. All using the 5GHz band.

Considering its price, these are some pretty good results that would be enough for one to three 4K streams.

6.Motorola MB8611

Don’t get a gigabit modem unless you already have gigabit service or know it’s available. The added expense of the DOCSIS 3.1 modems isn’t worth it until you’re on one of these new (and pricey) plans—especially since your ISP may roll out gigabit over fiber rather than cable.

And they may not even let you bring your own modem once they do roll out gigabit servic

7.NETGEAR Nighthawk

The Netgear Nighthawk is one of the best gateways I have tested, and it will work for any Xfinity internet plan.

We didn’t even find its max speed in testing since the internet plan we had access to was only 800 Mpbs.

The testing results were 800+ Mbps from 5 feet, 583.15 Mbps from 25 feet, and 298.47 Mbps from 50 feet. All using the 5GHz channel.


Best Docsis 3.0 Cable Modem for Comcast – That being said, there are some– tedious– things you should be aware of. For instance, modems are only supported by specific ISPs. For this article, we will be discussing the best cable modems for DOCSIS 3.0 and DOCSIS 3.1 in this article, which is the main protocol used for cable internet.