Looking for the best compatible modem for Xfinity Comcast? Well, your search ends right now because we’ve reviewed some of the fastest, most reliable, and fully compatible modems for Xfinity Comcast.
You’re probably here because you no longer want to spend $14 a month in rental fees for the Xfinity xFi Advanced Gateway Router-Modem combo. That’s a very smart move because paying for a modem that you'll never own every single month is not a wise decision.
Plus if you think about it, it's not really wise to spend $168 every single year in rental fees while you could own a different compatible modem for either the same amount, less or more depending on the brand.
There are countless modems that are compatible with Xfinity high-speed internet speed and the good news is that these modems guarantee top-notch performance- probably even better than the xFi Gateway Modem.
Whether you’re looking to ditch the rental modem from Comcast or want to boost your Wifi performance, here are 9 incredible modems that will make it happen.
Best Compatible Modems for Xfinity Comcast (Our Top 9 Picks)
1. NETGEAR Nighthawk Cable Modem WiFi Router Combo (C7800)
The NetGear Nighthawk C7800 Cable Modem Wifi Router Combo is currently one of the best-selling router-modem combos on Amazon- and it’s for all the right reasons.
With speeds reaching up to 2Gbps, you’ll absolutely love how fast and smoothly this modem streams 4K UHD contents, online games, and other heavy-duty streaming and downloading activities.
Thanks to its amplified antennas and range-boosting Beamforming technology, the Wifi signals will reach every single part of your home (covers up to 3000 square feet), not to mention focusing these signals to only the connected devices.
The result is better, wider coverage, and high-speed internet speeds. You can connect up to 45 devices, which is quite a huge number compared to most modems in the market.
Unlike most modems, this particular model has 32 downstream and 8 upstream channel bonding. The more channels a modem has, the more internet traffic it can accommodate without running into any issues.
This simply means that the NetGear C7000 is perfectly capable of delivering blazing fast speeds even during peak hours, making it perfect for Xfinity High-Speed internet plans.
The C7000 also uses the DOCSIS 3.1 Technology which is the latest version and is 46 times faster than the older 2.0 version. This means faster Wifi speeds on all of your devices.
The modem comes with 4 Gigabit Ethernet Ports for fast wired connections to your PC, gaming station, printer, and other devices.
It also includes Parental Controls and is safe and since it supports the WEP and WPA/WPA2 wireless security protocols, not to mention that it comes with an extremely powerful 1.5GHz dual-core processor that boosts all your wireless, wired, and WAN-to-LAN connections.
2. NETGEAR Nighthawk Cable Modem WiFi 6 Router Combo (CAX80)
Next in line is the NetGear Nighthawk CAX80 Router Modem Combo that hits an all-time high of up to 6Gbps, which is quite impressive.
Since it's built for blazing-fast Wifi connections, this modem is an excellent option for cable provide plans of up to 2 Gigabit speeds,
Even with 45-plus devices connected, this modem guarantees uninterrupted 4k UHD content streaming, online games streaming, heavy content downloads, large file transfers, and other tasks that demand fast and reliable internet speeds.
The modem also uses the newest DOCSIS 3.1 Technology which provides faster speeds than its predecessors- 3.0 and 2.0.
While the DOCSIS 3.0’s highest possible speed is 1Gbps, the 3.1 version is perfectly capable of maxing out to a whopping 10Gbps. So NetGear CAX80 basically guarantees faster speeds than any other available modem.
The modem also offers 32 by 8 channel bonding, which means it's able to dedicate up to 32 channels to download data and up to 8 channels for uploading.
In addition to the modem’s ultra-fast WiFi 6 performance with a wide coverage of up to 3000 square feet, it simply means that even with a higher device capacity, the CAX80 modem will still deliver fast internet speeds to all of your connected devices in every corner of the house.
The modem also comes with 4 Gigabit Ethernet Ports, one 2.5 Gigabit Ethernet Port, and one USB 3.0 port so you can enjoy fast wired connections from your PCs, printer, game box, storage drive, and other devices.
It also supports the WPA/WPA2 wireless security protocols which make your connections safe and secure.
Overall, the NetGear Nighthawk is an amazing option if you’re looking for a fast and reliable modem for your high-speed internet plan with Xfinity Comcast.
3. ARRIS SURFboard SBG8300 DOCSIS 3.1 Gigabit Cable Modem & AC2350 Dual Band Wi-Fi Router
If you’ve signed up for one of XFinity’s high-speed plans, the ARRIS SURFboard SBG8300 Modem/Router Combo is just what you need to achieve blazing fast speeds on all connected devices.
Reaching up to 4Gbps Wifi speeds, you'll absolutely enjoy lag-free online gaming and even 4KUHD movie or video streaming, not to mention its super-wide coverage easily eliminates dead zones even in rooms that are a little bit further from the device.
The modem uses the latest DOCSIS 3.1 Technology which is 10 times faster than its predecessor, the DOCSIS 3.0. This technology is perfectly capable of bonding up to 32 downstream and 8 upstream DOCSIS 3.0 channels or 2 by 2 OFDM DOCSIS 3.1 channels.
The result is a faster data transfer rate due to an increased bandwidth across all connected devices.
Additionally, this unit comes with 4 Gigabit Ethernet Ports so you can enjoy blazing-fast wired connections on all connected devices.
Overall, the ARRIS SURFboard SBG8300 is an amazing combo that doesn’t disappoint in terms of speeds, reliability, and even coverage. It's fully compatible with Xfinity and a few other cable providers.
4. NETGEAR Nighthawk Cable Modem WiFi Router Combo with Voice C7100V
If you’re looking to purchase the Xfinity Internet Plan plus their Voice Service, you can make things much simpler for you by choosing the NetGear Nighthawk C7100V Cable Modem WiFi Router Combo with Voice.
This modem is only compatible with Xfinity Internet and Voice Service. You cannot use it with any other cable or voice service providers.
Built for ultra-fast internet speeds, this modem is a perfect choice if you’re going Xfinity Internet Plan with speeds of up to 400Mbps and above.
The modem reaches all high speeds of up to 1900Mbps (AC1900), thus ensuring super fast and reliable internet speeds for uninterrupted online gaming, HD video and movie streaming, content downloading, large file transfers, and other heavy-duty tasks that demand blazing fast speeds.
The modem uses the DOCSIS 3.0 technology with 24 by 8 channel bonding, not to mention that it features 4 Gigabit Ethernet Ports as well as 2 USB ports so you can enjoy fast wired connections on your PC, printer, gaming box, storage drive, and other devices.
As a dual-band WiFi modem,(2.4GHz and 5GHz), you get to select the most suitable band for your devices for minimal interference and maximum speeds on up to 30 devices.
The modem provides maximum coverage of up to 1800 square feet, making it a suitable option for a medium-sized home or apartment.
The integrated voice service features two telephone lines that support a range of advanced features including call forwarding, caller ID, 3-way conference calling, and even ensures voice clarity by prioritizing voice over the internet.
Overall, the NetGear Nighthawk C7100V is a convenient and affordable option if you’re looking to bundle your internet plan with voice service from Xfinity.
5. NETGEAR Cable Modem CM1000
Unlike most of the models we’ve reviewed, this particular unit from NetGear is a standalone modem- not a router/modem combo.
The modem is built for speed and is suitable for internet plan speeds of up to 1Gbps. If you want less or more speeds, the CM100 offers a variety of options with the lowest being 100Mbp and the highest 2000 Mbps.
This ultra-fast cable modem allows you to enjoy lag-free online gaming and HD video and movie streaming with raging speeds of up to 6Gbps.
It provides a much wider coverage too and even works effectively with any WiFi router it's connected to.
The CM100 modem uses the DOCSIS 3.1 technology which is up to 10 times faster than the 3.0 version, though it works perfectly with both versions.
With up to 32 by 8 channel bonding on DOCSIS 3.0 or 2by2 OFDM on DOCSIS, this modem gives you the fastest download and upload speeds on countless devices- even during peak hours.
The modem also allows you to achieve a fast wired connection to your PC, router, or other devices with its 1 Gigabit Ethernet Port.
Sadly, you won't be able to connect more than two devices since it only comes with a single port, unlike other models that come with up to 4 ports.
So if you need to connect a few more devices via Ethernet, the CM100 is not a suitable option. You’re better off with the NETGEAR Nighthawk Cable Modem WiFi Router Combo with Voice C7100V which has 4 Gigabit Ethernet Ports.
6. ARRIS SURFboard SB8200 DOCSIS 3.1 Gigabit Cable Modem
The ARRIS SURFboard SB8200 Cable Modem is one of the most stylish and sleek cable modems in the market right now.
Coupled with its ultimately impressive speeds, overall performance, and affordable pricing, it’s no wonder it's currently one of the best-selling cable modems on Amazon.
The ARRIS SB8200 is a compatible modem for the Comcast Xfinity internet plan and is one of the fastest cable modems ever.
This particular modem is a suitable option for internet plans with speeds reaching up to 2Gbps, though you can choose lower speeds depending on your plan.
Supporting the DOCSIS 3.1 technology and 32 by 8 channel bonding, this modem is perfectly capable of delivering up to 10Gbps download speeds, making it a perfect choice for high-speed online gaming and 4K UHD video and movie streaming.
The modem also comes with two 1-Gigabit Ethernet Ports which are capable of delivering up to 2Gbps speeds on wired connections. However, your cable internet provider may require a second IP address to achieve the 2Gbps.
The SB8200 is an excellent compatible modem for Xfinity Comcast for anyone looking to boost their Wifi performance. Plus it’s a more affordable option compared to most of the models we’ve reviewed.
7. NETGEAR Nighthawk Cable Modem WiFi Router Combo C7000
The NetGear Nighthawk C7000 is yet another high-performance cable modem that will make your online streaming tasks much more enjoyable- no lagging or constant interruptions to your network no matter how many devices you’ve connected.
In fact, the modem lets you enjoy wireless connection speeds of up to 1900Mbps in a medium-sized house or apartment of up to 1800 square feet with up to a whopping 30 devices.
The unit uses the DOCSIS 3.0 technology which may not be as fast as the latest 3.1 but it still delivers ultra-fast speeds on up to 30 devices.
It’s engineered with 24 by 8 channel bonding and also features 4 Gigabit Ethernet Ports as well as 2 USB ports that deliver incredibly fast wired connections to your PC, gaming box, printer, storage drive, and other devices.
As far as security is concerned, this modem uses some of the most powerful wireless security protocols (WEP and WPA/WPA2) for the safety of the connected devices and even includes Parental Controls for controlling your kid’s online activity and internet usage.
This NetGear router/modem combo supports maximum download speeds from 300Mbps all the way to 2000 Mbps. This makes it an excellent choice for Xfinity’s high-speed internet plans.
8. NETGEAR Cable Modem CM700
Once again, we review yet another compatible cable modem from NetGear.
The CM700 cable modem from the NetGear line is currently one of the best-selling modems on Amazon right now.
Given that NetGear is reputed for its high-performance and reliable networking devices, it comes as no surprise that a lot of Xfinity internet service users often prefer it for fast internet connections.
This particular modem is ideal for internet plans with speeds going up to 500 Mbs, though you can choose lower or higher speeds depending on your needs.
Like many other modems in this line, this particular model uses the DOCSIS 3.0 technology which is 32 times faster than the older 2.0 and has 32 by 8 channel bonding for blazing-fast speeds even during peak hours, making it an ideal choice for 4K UHD and high-speed online gaming.
The modem also includes 1 Gigabit Ethernet Port that lets you connect your PC, router, or any other device so you can enjoy ultra-fast wired connections.
It works with any router and is compatible with Xfinity by Comcast, Spectrum, and Cox.
Compared to other modems in the NetGear line, the CM700 is one of the cheapest and most affordable options.
9. NETGEAR Cable Modem CM500
The NetGear CM500 Cable Modem is yet another high-speed internet modem that is perfectly capable of delivering ultra-fast speeds of up to 680Mbps.
Coupled with wide coverage and modern technology such as DOCSIS 3.0 ad 16 x4 channel bonding, this modem will allow you to enjoy lag-free online gaming, 4K UHD content streaming, content download and upload, and other heavy-duty internet tasks.
The modem is best for cable provider plans that range from 100Mbps maximum download speeds up to a whopping 2000Mbps.
The modem also lets you achieve fast Ethernet connections on your PC or router through the 1 Gigabit Ethernet Port.
Since this is also one of the most affordable modems in the market, you can ditch the costly rental fees on the xFi Gateway Router Modem from Comcast and save up to $168 per year.
Compatible Modems for Xfinity Comcast- Frequently Asked Questions (FAQs)
1. Can I Use 2 Modems with Xfinity?
It’s not possible to have 2 modems on a single Xfinity plan. To use a second modem, you’ll need to have a second service plan.
Basically, their policy does not allow using two modems on a single plan and in the same household.
You might want to get in touch with Comcast customer support for clarification.
2. Should I Buy my Own Modem for Xfinity?
As I’ve explained earlier, Comcast charges a whopping $14 per month in modem rental fees. This adds up to $168 annually.
Given the fact that you’re basically spending money on a modem that you’ll never own, it's highly advisable to just purchase your own modem for use with Xfinity Internet service.
You can choose any of the above modems since they are completely compatible with Xfinity.
Best Compatible Modems for Xfinity Comcast- Wrapping Up
As an Xfinity customer, you have the option of purchasing your own modem for use with their internet plans. Paying $14 per month is often not a financially sound option for most people.
What you pay in a year in rental fees can easily get you a high-quality, high-performance modem.
Go ahead and take your pick from these 9 best compatible modems for Xfinity Comcast.