Best Cable Modems For Comcast Xfinity

Best Cable Modems For Comcast Xfinity Internet 2020

best cable modems for comcast xfinity

Unlike CoxSpectrum, and other ISPs, The Comcast Xfinity is the biggest cable operator in the USA. That’s why it becomes essential for us to find the compatible and fastest modem that supports Comcast internet service. However, finding the ‘best cable modems for Comcast Xfinity’ is difficult unless you follow my advices. Therefore, I’ve shared a buying guide down below so that you can buy one that can fit your requirements. 

For those who are in a hurry, the following paragraph is for you. After that, you’ll see my top 6 recommendations. 

What is the best Comcast cable modem in 2020 to buy? Without any doubt, the Netgear CM1000 is one of the best modems for Comcast Internet service. However, you have to spend a bit more as it is 3.1 DOCSIS supported. Moreover, it is compatible with Spectrum and Cox Internet as well, meaning it is going to be a future-proof option for you. 

1. Netgear Cable Modem CM1000 – Best Overall modem for Comcast Internet

Best Cable Modems For Comcast Xfinity

Highlights:

  • 32×8 Channel Bonding 
  • Download speed of 686mbps and upload speed of 131mbps
  • 1x Gigabit Ethernet port up to 1Gbps
  • DOCSIS 3.1 Supported (OFDM 2×2)

Overview:

The Netgear Cable Modem CM1000 is my top pick when the Comcast Internet is concerned. However, this modem is a bit expensive because of being Docsis 3.1. Meaning, the modem is a future-proof option if you go for this. Unlike CM600, the CM1000 is capable of handling high-speed Internet speed plan up to 1Gbps. On the other hand, this modem supports not only Comcast Xfinity but also Cox and Spectrum. So if you’re planning to switch your ISP, you won’t have to change the modem. 

CM1000 offers 32×8 channel bonding with 2x2OFDM. That’s why I didn’t have any issues while streaming HD content or playing Ultra-Hd videos with it. Moreover, the design itself is quite unique, attractive, and looks great on the desk, unlike Arris modems. 

Pros & Cons:

I like:

  1. It is Comcast approved cable modem and compatible with its high-speed plan of up to 1Gbps. 
  2. New generation Docsis 3.1 supported and compatible with backward 3.0 Docsis.
  3. It works with any wireless router available on the market. 
  4. Setup is quite simple and easy; it only takes 5 minutes. 

I don’t like:

  1. It doesn’t support Verizon, AT&T, and Century Link. 

Summary:

After testing and comparing it with other modems on this list, I found the CM1000 far better in terms of features, technologies, and speeds. However, the price can be an issue with some people, which is quite obvious because of equipped with Docsis 3.1. 

2. ARRIS SURFboard Cable Modem (SB6183) 

Best Cable Modems For Comcast Xfinity

Highlights:

  • 4 upload and 16 download channels
  • Download speed of 686mbps and upload speed of 131mbps
  • 1x Gigabit Ethernet port 
  • DOCSIS 3.0 Supported
  • A 2-year of warranty

Overview:

The ARRIS SURFboards have earned a high reputation in the present days as they help in saving an ample amount of money of the customers. They have become the prime choice of customers owing to the ultra-fast download speeds. Equipped with DOCSIS 3.0 power, this modem offers channel bonding of almost 16 downstream channels.

You are going to enjoy online gaming and HD video streaming to a whole different level by choosing these cable modems. If you are familiar with experiences such as finding Comcast internet so slow all of a sudden, it is time to get the ultra-speed with the aid of these modems.

Pros & Cons:

I like:

  1. It is approved with Comcast Xfinity, Charter Spectrum, Cox, and many other US ISPs. 
  2. HD streaming is smooth and gives a lag-free experience. 
  3. It is easy to hook up and setup. 
  4. It comes with a well-informed user manual. 
  5. It offers a maximum Download Speed of up to 868mbps. 
  6. The design is incredible and looks small. 

I don’t like:

  1. I wish it had some more ports. 

Summary:

If you are looking for a modem that offers an internet experienced at superfast broadband speed, you can opt for this product. You are sure to get the ultimate experience of working, downloading, gaming, HD video streaming in an effective manner by choosing this modem.

3. ARRIS SURFboard SB6141 Cable Modem

Best Cable Modems For Comcast Xfinity

Highlights:

  • 8 Download & 4 Upload Channels
  • IPv6 Internet standard supported
  • DOCSIS 3.0 Supported
  • 1x Gigabit Ethernet port 
  • A 2-year warranty

Overview:

By supporting IPv4 and IPv6, ARRIS SURFboard SB6141 is compatible with most of the largest cable providers in the United States. Depending on the provider of your cable internet service, the cable gives you an opportunity to enjoy excellently fast download Wi-Fi and upload speeds to a maximum of 343 Mbps and 131 Mbps, thanks to its DOCSIS 3.0 and 802.11ac technologies.

The beamforming utilized by this modem allows you to stream your favorite videos and play online games from any area of your home at ultrafast speeds. Use the cable’s pre-set Wi-Fi security to secure your network from malicious intrusion.

Pros & Cons:

I like:

  1. Depending on your Internet service provider Arris Surfboard ensures that you enjoy fast download and upload speeds of up to 343 Mbps for downloads and 131 Mbps for uploads.
  2. It can work with a wide range of internet service providers such as COX TWC and Comcast.
  3. It has a straightforward installation process. Therefore, you must not be a techie to set up the Arris Surfboard modem.
  4. Has pre-configured Wi-Fi security to ensure that your network is free from malicious unauthorized access.

I don’t like:

  1. Its activity status LEDs are a bit bright, especially a blue one. 

Summary:

Arris Surfboard has supersonic speed. This enables the user to perform online tasks without experiencing low connectivity. It is recommendable to users who perform multiple tasks on the Internet because of its multiple channels. However, its lack of power button is a disadvantage to some users.

4. Linksys High-Speed DOCSIS 3.0 24×8 CM3024

Linksys CM3024 - comcast xfinity compatible modems

Highlights:

  • 24×8 channel bonding
  • DOCSIS 3.0 supported with up to 960Mbps Download & 240 Upload speed
  • Support up to 300Mbps Comcast’s Plans
  • 1x Gigabit Ethernet Port

Overview:

Linksys DOCSIS 3.0 Cable Modem has added more fun to the playing of online games, streaming HD videos and surfing the web, because of its incredibly fast Wi-Fi speeds up to a maximum of 300Mbps. You can use the modem on all main providers of cable services due to its wide-range compatibility.

Therefore, with this modem, you will save some bucks that you would have otherwise used for modem monthly rental fees. Replacing your old modem with Linksys DOCSIS 3.0 Cable Modem is a piece of cake since its setup process is incredibly easy. Besides, the modem comes with a comprehensive and easy startup guide.

Pros & Cons:

I like:

  1. It works with all main cable providers: Comcast Xfinity, Time Warner Cable, Charter, Cox, and many others. 
  2. With high WI-FI speeds of up to 300 Mbps, it enhances fast downloads.
  3. It is a 24×8 cable modem that delivers stable internet connectivity hence reducing internet congestion. Additionally, the user can enjoy simultaneous live media streaming as well as web browsing.
  4. It is easy to set up because there is no CD required.

I don’t like:

  1. It is not compatible with AT&T, Verizon, and CenturyLink. 

Summary:

With a supersonic speed of up to 300 Mbps, Linksys CM3024 is ideal for high bandwidth transfer rates, which make it be a good option for heavy downloads, video streaming, and online gaming. However, its lack of a back battery can lead to a setback in case of a power failure.

 5. ARRIS SURFboard SB6121 – Budget-friendly Comcast Modem

ARRIS SURFboard SB6121 - comcast xfinity compatible cable modems

Highlights:

  • 4×4 Channel Bonding
  • 172Mbps Download & 131Mbps
  • Docsis 3.0 Compatible
  • 1x Ethernet Port 
  • A 2-year warranty

Overview:

Connect ARRIS SURFboard SB6121 Cable Modem to your computer or router using the Gigabit Ethernet port. Then, download what you need on the Internet at unbelievably high speeds of up to 172 Mbps. You will finish uploading a file within a brief time over the modem’s four upload channels at speeds up to 131 Mbps.

The router offers you one of a kind online gaming and video streaming experience. No more dead spots in your network area; you will be able to access fast internet connections everywhere within your network. This modem matches all the primary cable service providers, such as Comcast, Cox, and many others.

Pros & Cons:

I like:

  1. It is compatible with primary U.S cable providers like Time Warner, Mediacom, Cox, and of course – the Comcast Xfinity.  
  2. It has download speeds of up to 172 Mbps download and 131 Mbps upload. This makes it possible for online streaming and gaming.
  3. It has 4×4 channels that reduce internet congestion. This means that it offers reliable internet access.
  4. The IPv6 latest Internet standard supported. 
  5. A quite affordable option, it comes under $30. 

I don’t like:

  1. It is not compatible with Verizon Fios and AT&T U-verse. 

Summary:

ARRIS SB6121 is compatible with major cable providers. This makes it compatible with major US Internet providers. With 4×4 channels, online video streaming is an effortless affair. Besides, these numerous channels reduce internet congestion.

However, it lacks a wireless router prompting the need to buy a router and a modem separately, hence additional costs.

6. Motorola MB7420 Cable Modem

Motorola MB7420 - Comcast Xfinity Compatible Modems

Highlights:

  • 16×4 channel bonding
  • Docsis 3.0 compatible
  • Supports high-speed Internet plan up to 300mbps. 
  • 1x Gigabit Ethernet port

Overview:

Enjoy reliable and fast internet connections with speeds up to 686 Mbps, thanks to Motorola 16×4 Cable Modem, Model MB7420. The modem has an Ethernet port that allows you to connect your TV, wireless modem as well as play station to your cable network.

Once you get this modem, you won’t break your back while trying to use it since its set up process is straightforward, and it is well described in a simple, quick start guide.

The compact shape is something about this modem that should excite you mainly if you have limited space in your house, and you fear that a large-sized modem can fall off due to congestion. Besides, this modem has an alluring design that will most probably match your interior décor.

Pros & Cons:

I like:

  1. It enhances reliable and fast Internet with speeds of up to 686 Mbps. This allows the user to take the shortest time possible to perform tasks on the Internet.
  2. It has an Ethernet port that allows internet connection to your TV, play station as well as WI-FI connection.
  3. It has 16 download channels and 4 upload channels, which make the Internet fast and reliable.
  4. The design of the modem is quite compact, attractive.  

I don’t like:

  1. I had to face some issues while configuring with IPv6. 

Summary:

Motorola MB7420 has multiple advantages, among them, being its reliability, fast Internet, and provision of various services to the user. This makes Motorola MB7420 the first choice for any internet user as a result of its advantages over other types of modem. However, this model lacks inbuilt a wireless router, and the user may be forced to buy the router in a separate package. 

7. NETGEAR CM600 Cable Modem 

Netgear CM600 - comcast xfinity compatible cable modems

Highlights:

  • 24×8 Channel Bonding
  • Supports up to 400Mbps Internet Plans
  • Docsis 3.0 supported 
  • 1 Gigabit Ethernet Port

With maximum cable internet speeds of 960Mbps, CM600 DOCSIS 3.0 Cable Modem ensures that you enjoy fast and high-end streaming of HD videos, lightening-speed downloads, and ultra-fast online games.

Its set up process includes a very easy-to-understand user web interface, which helps you have the modem operating within a short time without having to call the support team for assistance.

The dual-band technology of the modem offers you constant internet connections throughout your home. The modem’s USB port allows you to connect your printer or storage device to your network. Additionally, you can control access to your network by setting up a guest network for some of your users.

Pros & Cons:

I like:

  1. It is compatible with most internet service providers, including Comcast Xfinity, Cox, and Spectrum. This enhances flexibility while choosing your ISP.
  2. NETGEAR CM600 manages network congestion as well. This means that it is capable of accommodating the performance of multiple tasks online without experiencing internet connection snags.
  3. It ensures a high internet speed for ultra-fast downloads, among other online tasks.
  4. It can be set up within 5 minutes, and it requires only three steps. 

I don’t like:

  1. Not compatible with Docsis 3.1. 

Summary:

NETGEAR CM600 is unique in that it has a port that allows the user to connect his/her printer or storage device to his/her network. It is a lightning-fast speed modem. And its set up process is easy and simple, saving the user time to call for assistance from customer care.

What are the things you should consider and keep in mind before buying any Comcast Compatible Modem?

After spotting the best Comcast compatible cable modem to purchase, you need to confirm if it is going to offer you the value that you are looking for.

Hardware & Design:

Cable modems are supposed to be functional, so when it comes to their design, the simpler the design, the better. The ports should be well-spaced to provide ample space for cables to attach and detach without interfering with other connections. If the router is designed with ventilation holes, always leave the holes open for better cooling.

Docsis 2.0, Docsis 3.0, or Docsis 3.1?

All cable modems are compliant with certain standards, whether it is Docsis 2.0 or 3.0. You should, therefore, ensure that your cable modem is compliant with DOCSIS 3.0 standard if you want to enjoy the fastest internet speeds.

Docsis 3.1 is the next-gen internet standard for ISPs that provide cable internet. With this new standard, users will get data transfer speeds of up to 10 Mbps and enhanced download efficiency with better queue management for multiple downloads.

What’s more, Docsis 3.1 provides increased internet stability even at slow speeds. Even though Docsis 3.0 is capable of delivering gigabit speed, its data transfer speed is rated at a maximum of 1 Gbps, which is 10 times slower than Docsis 3.1.

The good thing about the Docsis 3.1 standard for ISPs is that they can easily upgrade from DOCSIS 3.0 to 3.1 without having to change their cable infrastructure.

And since Docsis 3.1 is completely compatible with Docsis 3.0, subscribers with DOCSIS 3.0 modems won’t be obliged to purchase new modems but will get the option of upgrading to the new DOCSIS 3.1 modems if they want to enjoy the benefits of this new standard.

Internet Protocols: 

Also, due to the increasing number of devices accessing the Internet, ISPs have moved from IPV4 to IPV6 (Internet Protocol Version 6). The reason is that IPV6 allows more data transmission within a network and also more devices to connect to the network than IPV4.

Comcast Cable Modems: FAQs

Is your Modem Compatible with your cable provider?

Not all modems work with all cable providers. It can be frustrating to buy one only to find that it isn’t compatible with your ISP. Therefore, it is paramount to check whether the modem appears in the ISP’s list of the compatible modems before you make a purchase. If the provider doesn’t have the list, get relevant information from customer forums, or enquire it from the customer care representative.

Is your Comcast Modem capable of handling fast Internet speed?

With fast a fast modem and fast cable Internet plan, you will be able to enjoy fast internet connection speeds. You can know how fast a modem is by confirming whether the modem utilizes DOCSIS 3.0 technology, which helps cable modems offer high internet speeds.

What further information should I know about Comcast Modems?

Reliability and efficiency are vital; thus, not relying only on the modem’s approval by Comcast. Seek to find further information from the relevant customer reviews about the reliability and efficiency of the modem.

What technologies and Standards compliance are considered the essential ones in a modem?

Standards Compliance refers to the technology used by ISPs to communicate with devices in their networks. Nowadays, most ISPs use Docsis 3.0, which is a newer version of Docsis 2.0 to provide superfast internet speeds. 

Buying of a Used Modem for Accessing Comcast Connection: Is it a good idea?

As much as it may seem to be a cheap option, don’t even think about buying a used modem for accessing Comcast internet connection.

There are high chances another Comcast user may have used a modem that’s not new, hence added to their accounts.

The other user may be from a different state from where you reside, and their account is normally closed. However, the MAC address of the modem remains in their account.

Therefore, you won’t be able to delete the MAC address from the account, hence the inability to add it to your account since the address is limited to a single account.

For that reason, you will have to take the used modem to a cable store of Comcast for its verification and addition to your Comcast account.

Final Verdict:

After the thorough guide, I don’t think you will be having any issues when it comes to buying the best cable modems for Comcast Xfinity Internet on your own. In other words, you can buy any Comcast compatible modem easily in no time. 

And I don’t want you guys to continue paying high monthly modem bills while experiencing annoyingly slow cable internet connections. Get the value of your money and replace your slow modem with a one-time purchase fast Comcast modem that will make you forget about all your internet issues. 

Choose the modem which is efficient and reliable, as well as the one that matches your cable internet plan and cable internet service provider – Comcast Xfinity.

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