Best Xfinity Cable Modem

Best Xfinity Cable Modem – 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.



The MB16x4 isn’t as tall as the Netgear CM500, our previous pick for the best cable modem, though some people may prefer the more compact size of the Arris Surfboard modems. At least, the MB7420 looks stylish, with rounded corners and vented sides. Its gray color should blend in well with other networking equipment.

The blue and green lights on the MB7420 are bright enough to read at a distance without turning a dark room into a laser light show at night. I also found the modem easy to set up with a coaxial connector sticking out of the modem’s backside at a comfortable distance from its lone ethernet port.

2.ARRIS Surfboard S33

ARRIS S33 is our pick for the best modem for Xfinity. This absolute beaut’ from ARRIS makes our hearts go pitter-patter. It comes with the latest DOCSIS 3.1 technology, which is just what you need to get the most out of your Xfinity Gigabit plan—even with the new speed hike up to 1,200 Mbps.

But if you want to be on the cutting-edge of modem tech, it’ll cost ya. To be fair, if you’re already shelling out for Xfinity’s Gigabit plan, you’ve probably got enough cash flow that you’re not worried about the $199.99 upfront price tag in exchange for long-term savings. As for the rest of us, we’ll stick with the bargain modems.


The Netgear CM500 works with the biggest cable providers and supports speeds of up to 300 Mbps, which should be enough for the vast majority of Internet users out there. (If you’ve got a high-speed plan, look for a faster modem.)

There’s actually very little performance difference among the best cable modems in our testing, so it’s seemingly slight distinctions that separate these devices. Opt for Netgear’s CM500, and you’ll get a modem that’s just as capable as the Motorola MB7420 or the Arris SB6183. However, Netgear only offers a one-year warranty, compared with two years for those rival modems.

4.Motorola MB8600

The Motorola MB8600 supports up to 1,000 Mbps download speed. But since Xfinity upped its Gigabit plans to 1,200 Mbps, we suggest you use it only for Xfinity’s Extreme Pro and lower-speed plans.

If you’re living in the fast lane, you’ll appreciate how smoothly this modem streams 4K Ultra HD content and handles high-speed online gaming. And it’s durable, too, so you can expect it to keep you up to speed for years to come.

5.ARRIS Surfboard SB6183-RB

While the ARRIS SB6183 runs on DOCSIS 3.0 tech—older than the DOCSIS 3.1 of the two previous devices—it’s still a zippy little modem.

If you have an Xfinity Blast! or Blast! Pro Plus plan, go for this device to get the speeds you need without forking out a ton of dough.


While most homes opt for internet plans that promise speeds of around 100 to 300 Mbps, some people prefer higher-speed service. If your plan promises download speeds that top 300 Mbps, you’ll want a cable modem that can take advantage of that greater performance. Netgear’s CM600 is the best cable modem for those higher speeds, though you’ll pay a little bit more than you would for the CM500.

Netgear’s modem doesn’t use the same Intel Puma 6 chipset that’s been blamed for latency issues with some other high-speed modems, such as the Arris Surfboard SB6190

7.NETGEAR Nighthawk

If you’re getting a voice plan from Xfinity, the NETGEAR will help connect your phone service as well as your internet service. Then you can call and tell all your friends about it (lol).

This modem is about as souped-up as the ARRIS S33, so it can handle Xfinity’s Gigabit plan, no sweat.

But this little baby from NETGEAR is a bit pricey, so if you’ve got a slower plan, you can save some money with another product like ARRIS SVG2482AC. This second option can handle speeds up to 600 Mbps, and it comes with a Wi-Fi router built-in too.


Best Xfinity Cable Modem – For most people, the best cable modem is the Motorola MB7420. It works with a wide variety of internet providers, including Comcast, Spectrum and Cox, and it delivers speeds that will serve the greatest number of people (anyone whose internet plan tops out at 300 Mbps).

Its two-year warranty is twice as long as the warranty for the Netgear CM500, which also performed reliably in our tests. Since the CM500 usually costs less than the MB7420, it’s a worthy alternative for bargain hunters.