Best Modem for Xfinity Gigabit – When shopping for a new modem for gigabit internet, you first need to determine its compatibility with your current internet connection. Check the tech specs or call your provider to make sure the modem works with your internet plan.
Second, make sure that it has a good warranty. You should be able to register the modem with the manufacturer and call customer support if there’s ever a glitch in the hardware.
Finally, get a modem with multiple Ethernet ports. You can link Ethernet ports together to create one super-fast wired connection or use them separately if your internet plan supports multiple IP addresses.
- Model MB7621 is recommended for actual cable Internet service speeds up to 650 Mbps. Wirecutter rates this “the best modem for most people.” A Full-Band Capture Digital Tuner ensures faster, more reliable Internet.
- This cable modem's 1 Gigabit Ethernet port connects to a WiFi router, computer, HDTV, game station, or streaming video device. Great for use with Whole Home WiFi or Mesh networks like eero, Google WiFi, and Orbi. (This cable modem does not have a built-in wireless router or telephone call capability. The Motorola MG7315, MG7540, MG7550, and MG7700 have a built-in wireless router.)
- Requires cable Internet service.Approved by and for use with Comcast Xfinity and Xfinity X1, Cox, Charter Spectrum, Time Warner Cable, BrightHouse, CableOne, SuddenLink, RCN, and other cable service providers. Eliminate cable modem rental fees up to 156 dollars per year. (Savings are shown for Xfinity and vary by cable service provider. No cable modem is compatible with fiber optic, DSL, or satellite services from Verizon, AT&T, CenturyLink, Frontier, and others. Model MB7621 has no phone jack.)
- Setup is fast and easy using the quick start guide.
- Attractive, compact design minimizes shelf space, improves cooling, and extends product life while looking great in any home or office. A 2-year warranty plus rugged lightning and power surge circuits protect your investment.
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.
- 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.
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.
3.ARRIS SURFboard SB8200
- DOCSIS 3 1 Cable Modem best for cable internet speed plans up to 2 Gbps. Note, a 2nd IP address is required from your cable internet provider to reach 2 Gbps.
- 32 downstream x 8 upstream DOCSIS 3 0 bonded channels, 2 downstream x 2 upstream OFDM DOCSIS 3 1 channels
- Two 1-Gigabit Ethernet ports
- Not compatible with ATT, Verizon, CenturyLink or other DSL or Fiber internet providers
- Cable internet service required; Does not inlcude Wi-Fi and does not support cable digital voice service
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.
4.NETGEAR Nighthawk Cable Modem
- Coverage up to 1,800 sq. ft. for up to 30 devices with AC1900 speed (up to 1900Mbps)
- Replaces your cable modem and Wi-Fi router, saving you up to Dollar 168/year in equipment rental fees
- Speeds by carrier: Xfinity (up to 800Mbps), Cox (up to 500Mbps), Spectrum (up to 400Mbps)
- Plug in computers, game consoles, streaming players, and more with 4 x 1G Ethernet ports
- Share a storage drive with any connected device using the 2.0 USB port
Xfinity’s xFi Gateway acts as both a modem and a router, so if you swap to your own equipment, you’ll need both. You can buy a modem and a router separately, or you can go for a combo like the NETGEAR Nighthawk C7000.
And, let’s face it. You could spend almost the same amount for just a modem. So the C7000 might save you more money in the long run.
The router also comes with excellent features like beamforming, which directs your Wi-Fi signal to your devices. (Think of it like lining up for a slam dunk versus blindly throwing 20 balls in every direction and hoping for a basket.)
- 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
Not surprisingly, that’s hard to find these days. But the NETGEAR Nighthawk CM1150V packs in all the features into one six-inch-high black box. You’ll get DOCSIS 3.1 technology that supports wired download speeds up to 1,000 Mbps, and you’ll get two phone jacks that are compatible with Xfinity Voice service.
Granted, all those features cost a pretty penny. So if cost-savings is what you’re after, you might try the cheaper ARRIS SBV3202—just be aware it supports speeds only up to 600 Mbps.
- Compatible with all major cable internet providers with internet speed up to 2Gbps. Currently certified with Spectrum and Cox (up to 1Gbps) and Xfinity (up to 800Mbps). Future speeds with these service providers may change over time. Not compatible with Verizon, AT&T, CenturyLink, DSL providers, DirecTV, DISH and any bundled voice service
- Save monthly rental fees: Model C7800 replaces your cable modem and Wi-Fi router saving you up to Dollar 168/year in equipment rental fees
- Get up to 3000 square feet wireless coverage and 45 devices connected with AC3200 speed (up to 3200 Mbps)
- Four (4) Gigabit Ethernet ports and 2 hi-speed USB 3.0 ports give you fast wired connections to your computer, printer, game box, storage drive, and other devices
- Modem technology: Engineered with 32x8 channel bonding and DOCSIS 3.1
Just as the awe-inspiring name suggests, the Nighthawk C7800 is a formidable beast built for serious gamers and ’net users. This gigabit modem router combo comes out of NETGEAR’s famed Nighthawk hardware series, acclaimed for delivering not just fast gaming speeds but also firewall protection against hackers.
The C78800 delivers dual-band Wi-Fi and works for both DOCSIS 3.1 and DOCSIS 3.0. The four trusty gigabit Ethernet ports will let you set up link aggregation to push past 1,000 Mbps speeds, so long as your cable company has the capacity for higher-speed gigabit plans.
7.ARRIS Surfboard SBG8300-RB
- 3 products in 1: DOCSIS 3 1 Cable Modem, AC2350 Dual band Wi-Fi, 4 port Gigabit Router (cable digital voice service not supported)
- Compatible with major U S Cable Internet Providers including Cox, Spectrum, Xfinity & others Cable internet service required Not compatible with ATT, Verizon, CenturyLink or other DSL or Fiber internet providers
- 32 downstream x 8 upstream DOCSIS channels, 2 downstream x 2 upstream DOCSIS 3 1 OFDM channels Best for cable internet speed plans up to 4 Gbps. Cable internet service required
- Wave 2 AC2350 dual-band concurrent Wi-Fi Router with 4 Gigabit Ethernet ports
- Setup and manage your network with the SURFboard Manager app Add SURFboard skills to your Alexa network for voice management of your Wi-Fi settings
- ARRIS REFURBISHED only SBG8300-RB with part number 1000926-RB
The ARRIS SURFboard SBG8300 is a DOCSIS 3.1 modem with a dual-band Wi-Fi router attached. In that respect, it’s pretty much just like NETGEAR’s Nighthawk C7800, only without the Nighthawk’s red, wavy stripe, cool antennas, or added security features.
The big bonus here is that you can save on space in your home and maybe a little money by opting for a gigabit modem router rather than having to shop for both a modem and a router.
Best Modem for Xfinity Gigabit – While considering buying a modem, it’s important to take note of the average internet speeds available with your internet service provider because it is only worth investing in a high-speed and a costly modem if the internet speed provided by your provider is also high speed. It is smart to buy a modem that supports the maximum internet speed provided by your internet service provider.
No one would want to replace and reinvest in a new modem again soon after buying a new modem. So, do not select extremely slow and low range or extremely cheap modems or the 8×4 modems as the internet service providers are dropping support for these 8×4 modems.