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.
Pros & Cons
- This 16x4 DOCSIS 3.0 cable modem provides speeds up to 686 Mbps, sixteen times faster than DOCSIS 2.0. A Full-Band Capture digital tuner ensures a faster, more reliable Internet.
- Cable modem's Ethernet port connects to a computer, HDTV, game station, or wireless router. (This Model MB7420 cable modem does NOT have a built-in wireless router and does not have a telephone adapter or phone jack. The Motorola MG7310, MG7315, MG7540 and MG7550 have a built-in wireless router.)
- Requires cable Internet service. Certified by Comcast XFINITY for residential speeds up to Extreme 300, by Comcast Business for speeds up to Deluxe 250, Time Warner Cable, Cox, Charter Spectrum, BrightHouse, and other leading cable service providers for modem ownership programs that typically save rental charges of 120 dollar or more per year
- Setup is fast and easy with a few quick steps set out in a Quick Start guide. Experienced USA-based customer support specialists are there to help if you need them.
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
Pros & Cons
- A Trusted Name in Home Connectivity: Better connectivity, better speed. The ARRIS SURFboard S33 DOCSIS 3.1 Cable Modem is designed to bring you superior connectivity, increase your network capability and provide faster streaming and downloading throughout your home. From a trusted brand with over 260 million modems sold and growing.
- Save Money: Own your modem and save. Reduce your cable bill up to $168 dollars per year in cable modem rental fees (Savings vary by cable service provider). Certified for use with most U.S. cable internet service providers. For a complete list see additional details below.
- Modem Technology: DOCSIS 3.1 is the newest technology available from cable internet providers. Its 10x faster than DOCSIS 3.0, provides better security, reduces lag while gaming & enables multi-gig networking (ability to run fast speeds on your copper cable from your internet provider).
- Simple and Secure Set-up: Plug-in the device, download the SURFboard Central App, and follow the instructions to activate the modem. Connect to a Wi-Fi router for networking.
- Compatibility: The SURFboard S33 is compatible with major U.S. cable internet providers including Cox (Gigablast), Spectrum (Internet Gig), Xfinity (Blast!/Extreme Pro) and others. It's approved for cable internet speed plans up to 2.5-Gbps. Check your Internet Service Provider (ISP) website to confirm compatibility.
- What's in the Box: When you purchase you will get an ARRIS SURFboard S33 Cable Modem, Power Supply, Quick-Start guide, and 2-year warranty card.
- Ethernet Ports: Has one 2.5-Gigabit ethernet port and one 1-Gigabit ethernet port to connect to a Wi-Fi router or other wired device.
- Dedicated Customer Support: Live Chat and Phone Support available 8am -1am EST. Product ships with 2-Year Limited Warranty.
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.
Pros & Cons
- Save monthly rental fees: Model CM500 replaces your cable modem, saving you up to $168/yr in equipment rental fees.
- Speeds by carrier: Spectrum (up to 400Mbps), Xfinity (up to 200Mbps), Cox (up to 150Mbps).
- Works with any wifi router: Connect any WiFi router to this modem's Ethernet port to support all your wireless devices.
- Ethernet connections: 1 Gigabit Ethernet port connects to your computer or separate WiFi router.
- Modem technology: Engineered with 16x4 channel bonding and DOCSIS 3.0.
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.
Pros & Cons
- Top Internet Speeds for all Multi-gigabit Speed Tiers - Wirecutter recommends this model as the best cable modem for people using Gigabit Internet plans. Built-in DOCSIS 3.1 and DOCSIS 3.0 32x8 capabilities give top Internet speeds for all cable Internet services.
- Save Money - Eliminate up to 168 dollars per year in cable modem rental fees (Savings are shown for Comcast Xfinity and vary by cable service provider.) Approved by Comcast Xfinity and Xfinity X1, Cox, and CableOne for all speeds including Comcast Gigabit services and Cox Gigablast. Not compatible with RCN. No cable modem is compatible with fiber optic, DSL, or satellite services, available from Verizon, AT&T, CenturyLink, Frontier, and others.)
- Flexible Compatibility - Pair with any Wi-Fi router you’d like, including Whole Home Wi-Fi or Mesh routers like eero, Google Wi-Fi, and Orbi. A 10/100/1000 Gigabit Ethernet port allows connection of any SINGLE device with an Ethernet port including a router, Windows or Mac computer, HDTV, or game station. This cable modem does not have a built-in wireless router or telephone call capability.
- Proactive Network Security - A broadcom chipset provides advanced security from denial-of service attacks.
- Active Queue Management (AQM) - AQM significantly reduces Internet latency on both DOCSIS 3.1 and 3.0 services, resulting in faster page loads for all Web traffic and enhanced interactive applications like online gaming and video conferencing. The MB8600 also includes a full-band capture digital tuner to enhance speed and save energy.
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
Pros & Cons
- APPROVED with Comcast Xfinity, Spectrum (Charter, Time Warner, Brighthouse), Cox and more. If not sure call your cable provider to find out if approved to use. REQUIRES Cable Internet Service. Not compatible with: Verizon, AT&T, or CenturyLink
- Cable Modem only (no WiFi router). NO support for Cable TELCO options
- Internet speeds up to 686 Mbps on 16 Download Channels and 131 Mbps on 4 Upload Channels, based on your cable ISP subscription. Approved for plans up to 400Mbps. Gigabit Ethernet port to connect to computer or router
- Great for streaming HD Video and gaming on multiple devices at a time
- 90 Day Warranty. ARRIS Certified Refurbished. US Technical support. ARRIS Certified Refurbished products will ALWAYS be branded ARRIS, Never Motorola! If you get Motorola branded product they are illegitimate, need to be returned to Seller and Reported to Amazon
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.
Pros & Cons
- Compatible with Comcast Xfinity, Time Warner Cable, Charter, Cox, Cablevision, and more. Requires Cable Internet Service
- Not compatible with: Verizon, AT&T, or CenturyLink
- Cable Modem only (no WiFi router).Memory: 8 MB NOR flash and 128 MB RAM
- Support Cable Internet Service plans up to 300Mbps. Recommended for all speed tiers up to 500 Mbps. Separate router required for WiFi. 24x8 channel bonding
- DOCSIS 3.0 Cable Modem with 1 Gigabit Ethernet port. DOCSIS 3.0 unleashes 8x faster download speeds than DOCSIS 2.0
- Ideal for streaming 4K UHD content, fastest downloads, and high-speed online gaming
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
Pros & Cons
- Supports internet speed up to 2Gbps. Certified with Xfinity Internet & Voice Plans up to 800Mbps speed. Future speed with Xfinity is subject to change
- Works with any WiFi router. Connect any WiFi router to this modem’s Ethernet port to support all your wireless devices
- Save monthly rental fees. Model CM1150V replaces your cable modem saving you up to $150/yr in equipment rental fees
- Four (4) Gigabit Ethernet ports give you fast wired connections to your computer, separate WiFi router, printer, game box, and other devices
- For use with Xfinity Voice service and up to 2 telephone lines with enhanced call features including caller ID, 3 way conference calling, call forwarding and more
- Modem technology: Engineered with 32x8 channel bonding, OFDM 2x2, and DOCSIS 3.1
- Multi-gig Ethernet: Link aggregation combines two 1G ports into one 2G port for faster wired ethernet speed
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.