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Comcast Xfinity is one of the leading internet service providers in the US. They occupy the largest market share in both broadband cable and cable TV internet services.

Like other ISPs, Xfinity also provides their modem router combo to subscribers on rent. However, due to high renting fees and average-quality devices, many subscribers find their way out to get their modem router combo.

To enjoy the best internet speeds from Xfinity, you must have a good modem router combo. In most cases, the models rented out by Xfinity are not good enough. This is why subscribers buy their modem as it gives them the freedom to pick a device of their choice. But at the same time, you need to make sure that the modem router combo you choose is approved by Xfinity.

If you are looking for the best modem router combo for Comcast Xfinity, you are in the right place. We have handpicked some of the best-selling models on the market. We have reviewed each of the devices and also covered other details in the post below. So without wasting time, let’s dive into the details.

Best Modem Router Combo For Comcast Xfinity Internet

7 Best Modem Router Combo For Comcast Xfinity Reviews

Here is the curated list of the best cable modem router combo for Comcast:

Must Read: How To Bypass Xfinity WiFi Pause

#1. NETGEAR Nighthawk Cable Modem WiFi Router Combo (C7800): Best Overall

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NETGEAR Nighthawk C7800 is one of the best-selling modem router combos out there. If you want better WiFi performance, then this could be the best choice for you.

The device is packed with more features compared to other cable provider modems with WiFi. This is a DOCSIS 3.1 device designed to give you a high-speed internet connection.

The best thing about this modem router combo is that it is compatible with almost every top cable provider including Comcast, Spectrum, and COX.

Why it is Unique?

It features four gigabit Ethernet ports and 2 high-speed USB 3.0 ports to provide fast wired connections to your devices.

Coming to the modem technology is engineered with 32×8 channel bonding and supports WEP and WPA/WPA2 wireless security protocols.

It also includes parental controls which will prevent your kids from altering the device settings. With this modem router combo, you can enjoy WiFi coverage of up to 3000 sq. ft. This is made possible with the range-boosting Beamforming technology and amplified antennas.

It can support up to 45 devices. It intelligently selects between dual bands to maximize speed and reduce interference.

Buyer’s Experience

Buyers love this device because it is built for ultimate speed. It supports up to 2Gbps speed. This ensures ultra-reliable internet speed for multiplayer gaming, 4K HD streaming, and more.

In most cases, users struggle with setting up their modem. But NETGEAR Nighthawk C7800 takes just 5 minutes to be installed.


  • Connect up to 45 devices.
  • Covers an area of up to 3000 sq. ft.
  • Suitable for 4K HD streaming.
  • Easy 5-minute setup.
  • Dual-band.


  • Poor customer support.

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Best Fit For

This amazing modem router combo from Arris is ideal for speed plans up to 4 Gbps. You can use it to watch movies without buffering and even download heavy files.

#2. ARRIS SURFboard SBG8300 DOCSIS 3.1 Modem & AC2350 Dual Band Wi-Fi Router: Best Performance

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ARRIS Surfboard SBG8300 is a future-proof device based on DOCSIS 3.1 standard. It is 10x faster and packs many features that make it stand out from other models within this range.

If you no longer want to spend monthly rental fees on your Xfinity device, then you should get one of your own. Given the features and specs of this device, it will surely make a great choice for you.

Why is it Unique?

The ARRIS SURFboard SBG8300 is a DOCSIS 3.1 WiFi cable modem that is capable of bonding up to 32 downstream and 8 upstream DOCSIS 3.0 channels. It is designed to provide increased bandwidth for true gigabit-speed capability.

It combines the benefits of 2 products in 1. It includes a DOCSIS 3.1 cable modem and an 802.11ac Wi-Fi router to give you the best internet experience.

This device is perfect for gigabit-speed plans. It has a built-in AC Wave 2 WiFi which is perfect for cable internet speed plans up to 4 Gbps.

Buyer’s Experience

Buyers feel that this device is the perfect addition to their home network. This is because it is compatible with the major cable internet providers in the US. This includes Xfinity, Cox, Spectrum, and others.

Unlike most other routers, this one is easy to set up. With just a few quick cable connections, you can set up a fast home network.


  • Great performance.
  • Suitable for speed plans up to 4Gbps.
  • Approved by major ISPs.
  • DOCSIS 3.1 enabled.


  • Sometimes it drops the connection.

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Best Fit For

This modem is built for extreme streaming. You can use it for 4K HD streaming and multiplayer gaming.

#3. Motorola MG7700 Cable Modem Plus AC1900 Dual Band Wi-Fi Gigabit Router: Best Budget

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If you are on a tight budget yet want a good modem, then Motorola MG770 Cable Modem could be the best choice for you. This is a 4.5-star rated modem packed with plenty of features.

Best of all you can work this modem with most of the cable providers on the market. It is certified by Cox, Comcast Xfinity, Spectrum, and others. Coming from a leading brand like Motorola you can expect high performance and speed.

Why is it Unique?

This modem is equipped with Power Boost technology that amplifies the wireless signal to the limit set by the FCC. It is designed to deliver higher Wi-Fi speeds and also extend the Wi-Fi range.

It also comes with a built-in router that provides you with high-speed internet access to all your devices.

AnyBeam WiFi beamforming at 5 GHz and 2.4 GHz directs the wireless signal on your devices to further improve wireless performance.

Check out the comparison of Motorola MB8611 vs MB8600

Buyer’s Experience

Buyers want a modem that will give them high-speed internet. They are satisfied with the performance of this modem.

Another thing they like about this device is that it gives the benefit of both a modem and a router. This helps them reduce clutter, wires, and power cubes and also provides a single-user interface.

Some buyers have also praised the vertical design as it looks great in any home or office. They also feel confident to buy this device as it is backed by a 2-year warranty.


  • Affordable.
  • Vertical design.
  • Space-saving.
  • 2 years warranty.
  • Power boost technology.


  • None to mention.

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Best Fit For

This budget-friendly modem is great for home use. From watching movies to casually surfing the internet, you can use it for all your daily online activities.

#4. ARRIS SURFboard SBG10 DOCSIS 3.0 Cable Modem & AC1600 Dual Band Wi-Fi Router: Best For Home Use

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We have yet another great modem router combo from Arris. If you want to enjoy a high-speed internet experience, then this device is the best fit for you.

It combines the goodness of two separate devices. By getting this device you no longer have to buy a router and a modem separately. This is not only efficient, but it also saves money.

Why is it Unique?

The ARRIS SURFboard SBG10 is a DOCSIS 3.0-enabled cable modem that makes a perfect choice for home internet use.

This is an all-in-one modem & router combo which eliminates the need to invest. It is best suited for cable internet speed plans of up to 400 Mbps.

Unlike many other modems, this one is compatible with major U.S. cable internet providers including Xfinity, Cox, and others.

Buyer’s Experience

According to buyers, they find the ARRIS SURFboard SBG10 cable modem to be an ideal device for home internet use. It is suitable for a house with fewer devices.

Buyers are also impressed because the device offers a quick and easy setup, so they don’t have to spend much time struggling.

This modem is equipped with two 1-gigabit Ethernet ports for superfast wired networking. This makes it perfect for connecting gaming consoles, smart TVs, and more.


  • Affordable.
  • Easy & quick setup.
  • Works with major ISPs.
  • High-speed internet.


  • Doesn’t support many devices.

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Best Fit For

As already mentioned once, this modem is ideal for home use. You can connect it to gaming consoles, PCs, smart TVs, and other devices.

#5. ARRIS Surfboard S33 DOCSIS 3.1 Multi-Gigabit Cable Modem: Best For Speed

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Next up, we have the ARRIS Surfboard S33 Multi-Gigabit Cable Modem which is one of the best modems you will find on the market. It is built for speed, so you can enjoy blazing-fast internet in your home.

Just like the rest of the devices on our list, ARRIS Surfboard S33 is also compatible with most of the top ISPs including Cox, Spectrum, Xfinity, etc.

Why is it Unique?

With this DOCSIS 3.1 cable modem, you can enjoy the best internet speeds. It is equipped with a 2.5 Gbps Ethernet port along with a 1 Gbps Ethernet port. This enables the device to combine download speeds up to 3.5 Gbps. 

Despite the low price tag, this is the fastest modem you will find in the entire SURFboard lineup. This device is also equipped with the latest technology to give you the best internet experience.

With DOCSIS 3.1 technology and multi-gigabit networking, you can future-proof your home network easily

Buyer’s Experience

The first thing that draws buyers to this device is the sleek new, modern design. The vertical design of the device can easily fit into any home or office.

This device enables buyers to power their home network with the latest technology. It is needless to say they are also able to save a lot of money on renting modems.


  • Sleek design.
  • Easy to install.
  • DOCSIS 3.1.
  • Suitable for both home and office.


  • Gets a bit heated.

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Best Fit For

This DOCSIS 3.1 modem is suitable for both home and office. It gives you good enough speed to perform all types of work. From downloading files to watching movies without buffering, it makes everything possible.

#6. NETGEAR C3700-100NAR C3700-NAR DOCSIS 3.0 Wi-Fi Cable Modem Router: Best Renewed


Buy from Amazon

This modem router combo is slightly different from the other models on the list. It is a renewed device that has been checked and tested professionally. If you want a second-hand device, then you could consider opting for this one.

This device has received a full 4-star rating on Amazon, which is good. Since this is a renewed device, it is cheap and affordable.

Why is it Unique?

This is a DOCSIS 3.0-enabled cable modem that comes with 8x faster download speeds up to 340 Mbps. With this modem, you can enjoy a smoother, faster Wi-Fi network.

It is also certified to work with internet service providers like XFINITY, Time Warner Cable, Cablevision, Cox, Bright House Networks, etc.

It has an 8×4 channel bonding with more than one gigabit Ethernet port for easy wired connections. Another great feature is the double firewall protection; SPI and NAT firewall.

Buyer’s Experience

Despite being a renewed device, it has received positive reviews from buyers. This product is tested and checked for performance and quality. So even if you are buying a renewed device, you have nothing to worry about.


  • Works with major ISPs.
  • Great speed.
  • Can be connected to multiple devices.
  • 8×4 channel bonding.


  • Renewed.

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Best Fit For

Given the features of this device, it is suitable for both home and office use. You can enjoy the decent speed with this modem.

#7. Motorola MG7550 16×4 Cable Modem Plus AC1900 Dual Band Wi-Fi Gigabit Router: Best Buy

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Lastly, we have the Motorola MG7550 which is a perfect device for fast internet speed. With this device, you can improve your WiFi network at home or office.

The good thing is that you can use this device with many of the internet service providers in the market. Not only that, but you can also connect it to all your devices. From smartphones to consoles, PCs to HDTVs, it works with almost any device you want.

Why is it Unique?

It is equipped with Power Boost technology that helps improve the wireless signal and thus, delivers higher WiFi speeds.

Wi-Fi beamforming at 2.4 GHz and 5 GHz helps focus the wireless signal on your devices to further boost performance.

Buyer’s Experience

Coming to buyers, like the sleek and modern design of the device. That’s the first thing they notice about this modem.

They are also satisfied with the price tag as this is an affordable model. Another reason they love this device is that it is easy to set up.

The device combines the benefits of a modem and a router in a single device. This helps buyers save money as they don’t have to buy both devices separately.


  • Modern design. 
  • Quick setup.
  • High-speed.
  • Can be connected to a large variety of devices.


  • None to mention.

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Best Fit For

With this modem and router combo, you can enjoy smooth streaming, gaming, watching movies, and everything else you want to do.

What To Look For When Buying A Best Modem Router Combo for Comcast Xfinity

While picking a modem router combo for Xfinity, you must keep a few things in mind. Certain important factors influence your choice, so you must pay close attention to every detail. To make your buying process easier, we have pointed out the factors that you need to look into.

1. Speed

When it comes to buying a router, speed is probably the most important thing to consider. If you have been using an Xfinity router, then you know that the standard one is not great in terms of throughput.

Using a router with good throughput can help improve your internet speed. It will provide you with extra bandwidth to ensure you have a stable connection. Moreover, the actual speed delivered by a router is only one-third of the theoretically specified speed. This is why you need a router with greater throughput than the speed mentioned in your internet plan.

2. Wireless Standard

The next important aspect of a router is the protocol used for communication or wireless standards. This is represented by letters and numbers like 802.11. This signifies the range and speed offered by the router. Speaking of which there exist three main standards and they are:

  • 802.11ac or WiFi-5 is the standard that provides speeds up to 1.3Gbps. This is the most reliable and efficient option available.
  • 802.11ax and 802.11ad which is also known as WiFi 6 are the newly introduced standard. It comes with four times the throughput offered by WiFi 5. But the problem is that most internet connections cannot yet use this standard. At this point, the performance is not worth the money.
  • 802.11n was mainly found in previous-generation devices. However, you might still come across them in some average-performing routers.

3. Band

This is yet another important factor to consider. Dual-band routers can broadcast signals of two frequencies: 5 GHz and 2.4 GHz. Hence, they can host two different networks. Newer devices are designed to automatically connect to the 5GHz one. As far as the older models are concerned, they will use the 2.4GHz line.

Besides dual-band routers, we also have tri-band routers that come with an additional 5GHz network. This extra 5GHz line can be beneficial in many ways. It serves as an alternate route and thus, helps in reducing congestion on the main route. In other words, devices connecting to one 5GHz can now be distributed among two networks. This in return will help improve performance and speed.

This is why you should always check the number of bands a router has. After all, it has a direct impact on the overall performance of the router.

4. Coverage

When buying a router keep the router coverage in mind. It refers to the total area that a router can cover. Or you can simply say the area of the router where the signals are the strongest and it can reach the wireless devices.

The 2.4GHz signals have a long range but are prone to disturbance and interference from neighboring networks. It can even be interrupted by Bluetooth devices. If this happens, then it will lead to an unstable and poor connection.

As far as the 5GHz signals are concerned, it is immune to any type of interference despite having a shorter range. Also, it provides a more reliable connection within the reduced range.

If you don’t want to use WiFi extenders, then we recommend you opt for routers with maximum coverage. However, you should know that the ranges mentioned in spec sheets can be misleading at times. That’s because the actual range is subject to the placement of your router. It is also affected by the presence of any obstructions around it.

Related Post: Return Xfinity Equipment

Benefits of Buying Own Modem Router Combo For Comcast

Some of you must be wondering why to buy your device when you are getting a standard one from Xfinity. There is more than one legitimate reason or benefit of buying your own approved modem router combo for Comcast.

  • Save Money

When you rent a router from Xfinity you are charged a monthly fee of $13. But you could save your monthly router rent by getting your own. It is a one-time investment and will help you save a lot of money per year. When you buy your device you will be able to recoup the initial cost in a year.

  • Can Buy a Router of Your Choice

When you decide to buy your device you get the freedom to buy whichever model you want. You can choose the best device based on your requirements. This will help you improve your internet speed. Also, buying a modem of your choice is any day better than using the standard one offered by Xfinity.

  • Full Control of Your Device

Buying your device means you can have full control over it. If you are a tech-savvy person you will surely enjoy this type of liberty with your modem. You can install a VPN on your device, tweak the settings, etc. There are so many things you can do to your device without worrying about anything.

When buying a device of your own, just make sure that it is compatible with Xfinity. Otherwise, it is of no use.

FAQ on Modem Router Combo for Comcast

Q1. Why buying a modem is better than renting an Xfinity modem?

Ans: First of all, you can save a lot of money once you get your modem. You will be free from paying monthly rental charges. Secondly, you can choose a better modem for yourself.

Q2. Are Xfinity rental modems any good?

Ans: Xfinity offers standard modems on rent. These modems are good enough for home use. But if you want faster speed, then you should buy a modem of your choice. Xfinity modems are not suitable for 4k streaming or online multiplayer games.

Q3. Why is my Xfinity WiFi slow?

Ans: Your Xfinity WiFi might be slow because you don’t have enough bandwidth. However, if your router is fine, but your internet connection is sluggish, especially when there are multiple people online, it would be better for you to upgrade your plan.

Q4. What is the fastest internet speed offered by Xfinity?

Ans: The fastest internet speed offered by Xfinity is 2000 Mbps. Xfinity is one of the leading internet providers on the market. The company consistently delivers on advertised speeds.

Q5. What does it indicate when my Xfinity modem light blinks blue?

Ans: The blinking blue light on your Xfinity modem indicates that the WPS mode is on. It implies that the modem is trying to establish a connection with another wireless device. The blinking light will automatically turn solid once it gets connected to the other wireless device.

Final Words

Having a powerful Modem Router Combo For Comcast Xfinity Internet can help you get the most out of your Xfinity Internet plan. You just have to make sure that you get a device that is compatible with your Xfinity connection. Also, buying your device spares you from the headache of paying rental fees every month. If you are planning to buy a new modem and router combo for Xfinity, you can pick any of the models mentioned in this post. These are all high-rated devices and are preferred by most buyers online.

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