Xfinity Gateway vs Modem: All You Need to Know

Xfinity Gateway Vs Modem

Whenever it comes to my internet connection, I’ve always relied on the Gateway supplied by Xfinity, my internet service provider, and haven’t given it much consideration.

It’s generally painless, except for the time my xFi Gateway went down. However, if there are any problems with the connection, I can contact Xfinity Technical Support, and they will take care of the problem for me.

I did the arithmetic one day and concluded that, in the long run, it would be more cost-effective to use my modem than the one provided by the service provider. I was able to save a significant amount of money as a result of this.

Finally, I had a gadget that could use the full internet speed I’d paid for, and I could take the modem with me when I switched Internet service providers. Nevertheless, before I decided, I had to invest a significant amount of time studying to make certain that I fully understood what I was entering into.

To help you select between an Xfinity Gateway and your modem, I wrote this in-depth comparison post. Investing in your modem provides benefits such as quicker internet, greater power, and economic viability. Customer service suffers as a result.

A Closer Look at Modems and Gateways

A modem serves as a link between your computer and your Internet service provider. If you need additional power and have many devices to connect to, it is usually recommended that you pair it with a router.

Routers transmit the internet signal as radio waves over the air, allowing other devices to connect to the internet without connecting directly to the modem/router.

A gateway, often known as a “modem router combo,” combines the two more convenient technologies. You can connect up to four wired devices while also providing Wi-Fi. Your Internet service provider often provides this Gateway.

Here are a few things to keep an eye out for when purchasing a modem router before we go out and get one for ourselves.

  • Compatibility: Xfinity should operate with the majority of modems (and most other ISPs). Xfinity provides a list of compatible modems on their website.
  • Speed: It is possible to find routers on the market capable of handling higher speeds than the Xfinity gateway.
    Your Xfinity Wi-Fi connection isn’t always up to par when it comes to speed. In other words, you can make use of your high-speed internet service now that you have your modem.
  • Range: Making sure your modem router has a broad enough range to reach all of the gadgets in your home is essential to your comfort.
    If one device isn’t enough, you may add extenders to make it work.
  • Wireless Standard: When shopping for a modem router, look for one that supports the Wi-Fi 5 wireless standard. Wi-Fi 6 is the most recent technology available on the market, and it is much quicker.

Rent vs Buy: An In-Depth Look

Purchasing your modem is preferable from a financial standpoint if you want to remain in your present home for at least a year after moving in.

This is because you will get a better product while spending the same amount of money if you pay rent for about the same length of time.

If you are a gamer or conduct online streaming, it may be more cost-effective to get your modem since you will need a device that can manage the increased strain on your internet connection.

xfi gateway modem

Customer Support

One of the few things you’d regret is the absence of customer assistance. If you use a gateway or modem router, you must be familiar with setting it up and fixing it. However, you can acquire all of this information if you devote an hour of your time to it.


Typically, Xfinity supplies you with a gateway, and you are responsible for a monthly charge as well as your internet service payment. This monthly charge would come to about $14 per month for you. If you were to compound this sum over two years, it would cost you a staggering 336 dollars!

If, on the other hand, you were to purchase your Xfinity Voice Modem, you would save a significant amount of money. While the first payment may seem excessive, keep in mind that this is a one-time payment.

In most cases, you’ll be able to use your modem for at least two years before you’ll need to change, which will save you a significant amount of money.

Internet Provider Choice

Having your modem gives you the flexibility to change service providers if you feel you are not getting value for your money.

Think about moving from an area where Xfinity provided you with fast internet to an area where Verizon offers the best connection.

You have to move your equipment and configure it to operate with Verizon’s network after you’ve set it up in your new location.

To avoid the cancellation charge, use the Xfinity Early Termination process if you’re canceling your Xfinity subscription.

What About my Wireless Router?

In its most basic form, a router is a device that connects wireless devices such as computers, phones, tablets, and other similar devices to the internet.

It may be used in conjunction with a modem or purchased with a modem already built-in; such “two-in-one” devices are referred to as gateways.

Internet service providers often provide gateways. If you are thinking about getting your modem, you will need to purchase a router separately or search for a gateway to make a move.

If you already have a modem, you can now look for an Xfinity Compatibility Wi-Fi Router that will work with your service.


With this information in mind, I decided to purchase a modem, which has greatly improved my overall internet user experience. The fact that I own my modem beats using Xfinity’s, even if you don’t receive customer support. Take Advantage of Your High-Speed Internet

Please bear in mind that it is critical to balance the internet speed provided by your Internet plan against the maximum speed that your modem is capable of supporting.

You must be certain that your modem can process it at maximum speed; otherwise, you will be unhappy with your service and terminate it.

While you may contact Xfinity Customer Service, they would likely point the finger at your modem and suggest that you buy their Gateway.

Best Seller List of Xfinity Modem:

Bestseller No. 1
Motorola MB7621 Cable Modem | Pairs with Any WiFi Router | Approved by Comcast Xfinity, Cox, and...
24,396 Reviews
Motorola MB7621 Cable Modem | Pairs with Any WiFi Router | Approved by Comcast Xfinity, Cox, and...
  • 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.
SaleBestseller No. 2
ARRIS SURFboard SB6183-RB DOCSIS 3.0 16x4 Cable Modem| Approved on Xfinity, Cox, Spectrum and most...
  • 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
SaleBestseller No. 3
Motorola MG7700 Modem WiFi Router Combo with Power Boost | Approved by Comcast Xfinity, Cox and...
  • Fast 24x8 DOCSIS 3.0 cable Modem Plus a built-in AC1900 Dual band (2.4GHz and 5GHz) Wi-Fi Gigabit Router with four Gigabit (GigE) Ethernet ports, power boost Wi-Fi amplifiers, firewall security, and more. The maximum modem speed is 1000 Mbps, supporting service speeds up to 650.
  • Eliminate up to 156 dollars per year in cable Modem rental fees. (Savings are shown for Comcast Xfinity and vary by cable service provider.) certified by all leading cable service providers including Comcast Xfinity, Cox, Charter spectrum (no cable Modem is compatible with fiber optic, DSL, or satellite services, available from Verizon, AT&T, CenturyLink, Frontier, and others.)
  • Built-in high-speed router with AC1900 wireless and Power boost - Provides internet access for Wi-Fi devices including smartphones, notebooks, tablets, and more. 4 10/100/1000 Gigabit Ethernet LAN ports provide wired connections to Windows and Mac computers and other Ethernet-capable devices. A Broadcom cable Modem Chipset provides security from denial of service attacks.
  • Wireless power boost for better speed and range - Adds high-performance Wi-Fi power amplifiers to boost the wireless signals to the legal limit, giving a significant Boost in speed and range. In addition, anybeam Performing at both 2.4 GHz and 5 GHz frequencies focuses the signal on wireless clients to further enhance performance and range
Bestseller No. 4
NETGEAR Renewed C3700-100NAR C3700-NAR DOCSIS 3.0 WiFi Cable Modem Router with N600 8x4 Download...
  • Netgear Certified Refurbished product is manufacturer refurbished to work and look as new with 90 Day Warranty and email support. All accessories are included with limited documentation and additional information online. Netgear recommends to udpate the firmware for the device to be up to date.
  • DOCSIS 3.0 cable modem unleashes 8x faster download speeds up to 340 Mbps faster, smoother WiFi, and works with all major cable Internet providers (Not Compatible with Cable Bundled Voice Services).
  • Certified to work with Cable Internet Providers like XFINITY from Comcast, Time Warner Cable, Cox, Cablevision, Bright House Networks, & More (Not Compatible with Cable Bundled Voice Services).
  • 8x4 channel bonding with Gigabit Ethernet Ports for fast wired, connections USB port to wirelessly share your hard drive.Double firewall protection (SPI and NAT firewall)
  • "Netgear Refurbished product may have a removed serial number. You will need to state the product is refurbished (state the full part number) if emailing customer support. See the attached (image) flyer to obtain the Serial Number and MAC Address information that maybe needed by your Cable provider before contacting them."
SaleBestseller No. 5
NETGEAR Nighthawk Cable Modem CM1200 - Compatible with all Cable Providers including Xfinity by...
7,041 Reviews
NETGEAR Nighthawk Cable Modem CM1200 - Compatible with all Cable Providers including Xfinity by...
  • 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
  • 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 CM1200 replaces your cable modem saving you up to 168 dollars/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
  • Modem technology: Engineered with 32x8 channel bonding, OFDM 2x2, and DOCSIS 3.1
SaleBestseller No. 6
NETGEAR Cable Modem with Built-in WiFi Router (C6230) - Compatible with All Major Cable Providers...
19,592 Reviews
NETGEAR Cable Modem with Built-in WiFi Router (C6230) - Compatible with All Major Cable Providers...
  • Maximum Range : 1200 Sq Ft
  • SPEEDS BY CARRIER: Xfinity (up to 300Mbps), Spectrum (up to 400Mbps), Cox (up to 250Mbps).
  • COMPATIBLE WITH MAJOR CABLE INTERNET PROVIDERS: Including Xfinity, Spectrum, Cox, and more. NOT compatible with Verizon, AT&T, CenturyLink, DSL providers, DirecTV, DISH and any bundled voice service
  • FAST WIFI PERFORMANCE: Simultaneous dual-band WiFi provides coverage for medium sized homes with AC1200 speed (up to 1200Mbps)
  • SAVE MONTHLY RENTAL FEES: Replaces your cable modem and WiFi router saving you up to $168/yr in equipment rental fees
Bestseller No. 7
MOTOROLA 16x4 Cable Modem, Model MB7420, 686 Mbps DOCSIS 3.0, Certified by Comcast XFINITY, Charter...
  • 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.
SaleBestseller No. 8
ARRIS Surfboard SBG10-RB DOCSIS 3.0 Cable Modem & AC1600 Dual Band Wi-Fi Router, Approved for Cox,...
264 Reviews
ARRIS Surfboard SBG10-RB DOCSIS 3.0 Cable Modem & AC1600 Dual Band Wi-Fi Router, Approved for Cox,...
  • 3 products in 1: DOCSIS 3 0 Cable Modem, AC1600 dual-band Wi-Fi Router, 2 Port Gigabit Ethernet Router (cable digital voice service not supported)
  • Wi-Fi 5 AC1600 dual-band concurrent Wi-Fi Router with 2 Gigabit Ethernet ports
  • Setup and manage your network with the SURFboard Manager app
  • 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
  • 16 downstream & 4 upstream channels. Best for cable internet service plans up to 400 Mbps.
SaleBestseller No. 9
Netgear Nighthawk Cable Modem WiFi Router Combo C7000-Compatibility Cable Providers including...
  • input voltage:120 -240V
  • COMPATIBLE WITH ALL MAJOR CABLE INTERNET PROVIDERS: Including certification by Xfinity by Comcast, COX, and Spectrum. NOT compatible with Verizon, AT&T, CenturyLink, DSL providers, DirecTV, DISH and Cable bundled voice services
  • SAVE MONTHLY RENTAL FEES: Model C7000 replaces your cable modem and WiFi router saving you up to $150/yr in equipment rental fees. System Requirements Cable broadband Internet service, Check your cable Internet service provider web site for data speed tier compatibility, Not compatible with Cable bundled voice services, Microsoft Windows 7, 8, Vista, XP, 2000, Mac OS, UNIX, or Linux, Microsoft Internet Explorer 5.0, Firefox 2.0, Safari 1.4, or Google Chrome 11.0 browsers or higher
  • BUILT FOR FAST SPEED: Best for cable provider plans up to 400 Mbps speed
  • FAST Wi Fi PERFORMANCE: Get up to 1800 sq ft wireless coverage and 30 devices connected with AC1900 speed (up to 1900 Mbps)
Bestseller No. 10
NETGEAR Cable Modem DOCSIS 3.0 (CM500) Compatible with All Major Cable Providers Including Xfinity,...
14,120 Reviews
NETGEAR Cable Modem DOCSIS 3.0 (CM500) Compatible with All Major Cable Providers Including Xfinity,...
  • 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.



Do I need a router with Xfinity Gateway?

You don’t have to. The Xfinity Gateway has a built-in router.

Can I stop renting an Xfinity modem?

Yes, if you buy your modem gateway from Xfinity, you will no longer need to rent a modem from them. 

How much does Comcast charge for a lost modem?

If you lose your modem or do not return it to Comcast, you will be charged the full amount for your borrowed equipment.

Do I need to return the Comcast modem?

The modem must be returned, yes. If you don’t, you’ll have to pay.

-our editorial board has reviewed this article and has been approved for publication according to our editorial policy.

Last update on 2022-10-03


Electronic devices are like an addiction to me. Years ago, I started my job at an audio/video installation co. Then I realized that I have a passion for home theaters. It is a perfect scope to share my different experiences about electronics and home theaters.

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