Best Xfinity Compatible Modems 2025

Our experts sorted through over 80 Xfinity-approved modems!



Gigabit Extra

ARRIS S33

  • Price*: $154.90
  • Max recommended speed: 1,200 Mbps
  • Channel bonding: 32x8

View on Amazon

Best for Gigabit

Motorola MB8600

  • Price*: $139.98
  • Max recommended speed: 1,000 Mbps
  • Channel bonding: 32x8

View on Amazon

Best for Fast

ARRIS SB6183

  • Price:$49.00
  • Max recommended speed: 400 Mbps
  • Channel bonding: 16x4

View on Amazon

Best for Connect

NETGEAR CM400

  • Price: $69.99
  • Max recommended speed: 100 Mbps
  • Channel bonding: 8x4

View on Amazon

Best for voice plan

NETGEAR CM1150V

  • Price: $129.98
  • Max recommended speed: 1,200 Mbps
  • Channel bonding: 32x8

View on Amazon



    The ARRIS S33 is the top choice for an Xfinity-approved modem that can handle any download speed. However, if you have a slower internet plan, such as Performance Starter or Performance Select, a more affordable modem like the NETGEAR CM400 will still suffice.

    Although leasing the fancy Xfinity XFi Gateway has its advantages, purchasing an Xfinity-compatible modem is ultimately a more cost-effective decision. So, let's help you save some money by recommending the best modems for Xfinity from Comcast.

    Best Xfinity-compatible modems 2025

    - ARRIS S33 is best for Gigabit Extra and Gigabit Plus plans ($154.90)

    - Motorola MB8600: Best for Gigabit and Ultrafast plan ($139.98)

    - ARRIS SB6183 is best for Fast plan ($49.00)

    - NETGEAR CM400: Best for Connect plan ($69.99)

    - NETGEAR CM1150V: Best for voice plans: ($129.98)

    Compare Xfinity-compatible modems

    Model/service

    Price

    Max recommended speed

    Channel bonding

    ARRIS S33

    $154.90

    1,200 Mbps

    32×8

    Motorola MB8600

    $139.98

    1,000 Mbps

    32×8

    ARRIS SB6183

    $49.00

    400 Mbps

    16×4

    NETGEAR CM400

    $69.99

    100 Mbps

    8×4

    NETGEAR CM1150V

    $129.98

    1,200 Mbps

    32×8

     

    Best Xfinity-compatible modems in depth

    ARRIS S33: Best for Gigabit Extra and Gigabit Plus

    The ARRIS S33 is a top-of-the-line modem that is specifically designed for Gigabit Extra and Gigabit Plus internet plans. With its advanced DOCSIS 3.1 technology, this modem offers lightning-fast Internet speeds of up to 10 Gbps downstream and 1 Gbps upstream. It is equipped with 2 Gigabit Ethernet ports for seamless and high-speed wired connections. The S33 also features backward compatibility with DOCSIS 3.0 devices, ensuring excellent performance even with older devices. The sleek and compact design of the ARRIS S33 makes it a perfect choice for users who demand exceptional speed and reliability for their high-bandwidth activities.

    Motorola MB8600: Best for Gigabit and Ultrafast

    The Motorola MB8600 is a top choice for those seeking gigabit and ultrafast internet connections. With its advanced DOCSIS 3.1 technology, this modem delivers lightning-fast speeds and reliable performance. It supports download speeds of up to 6 Gbps and upload speeds of up to 1 Gbps, making it ideal for heavy internet usage, online gaming, and 4K streaming. The MB8600 features a sleek and compact design that saves space while providing maximum functionality. Its compatibility with major cable providers ensures easy setup and compatibility, making it the best choice for those looking for high-speed internet connectivity.

    ARRIS SB6183: Best for Fast

    The ARRIS SB6183 is an excellent choice for those seeking a fast and reliable internet connection. With its DOCSIS 3.0 technology, this modem delivers impressive download speeds of up to 686 Mbps and upload speeds of up to 131 Mbps. Its 16x4 channel bonding ensures smooth and uninterrupted data transmission, making it ideal for online gaming, streaming, and other bandwidth-intensive activities. The compact and sleek design of the SB6183 allows for easy installation and placement. Overall, the ARRIS SB6183 is a top-notch modem that provides lightning-fast Internet speeds for a seamless online experience.

    NETGEAR CM400: Best for Connect

    The NETGEAR CM400 is a high-speed cable modem that is best known for its reliable and fast Internet connection. With download speeds of up to 300 Mbps, it provides a seamless online experience for streaming, gaming, and browsing. Its compatibility with major cable internet service providers ensures widespread availability. The CM400 is easy to install and supports multiple devices, making it a great choice for households with multiple users. With its compact design and affordable price, the NETGEAR CM400 is an excellent option for those looking for a dependable and efficient cable modem.

    NETGEAR CM1150V: Best for voice plans

    The NETGEAR CM1150V is a top-notch option for those seeking the best voice plans. Equipped with DOCSIS 3.1 technology, this cable modem offers ultra-fast Internet speeds to support high-quality voice calls without any interruption. With its compatibility with various VoIP voice providers, the CM1150V ensures a reliable and seamless communication experience. The modem is also designed with advanced features like voice quality enhancement and extensive network management capabilities, allowing users to enjoy crystal-clear voice calls and optimal performance. Its sleek and compact design makes it easy to install and saves space, making it an excellent choice for homes and small businesses in need of reliable voice communication.

    Buy Xfinity-compatible modems now!

    What to look for in a modem

    1. Connection Speed: One of the first things to consider is the modem's connection speed. Look for a modem that supports your desired internet speed. This will ensure fast and seamless browsing, streaming, and downloading experiences.

    2. Compatibility:

    Check whether the modem is compatible with your internet service provider (ISP) and offers support for the type of internet connection you have (DSL, cable, fiber, etc.). Ensure the modem is approved by your ISP to guarantee seamless functionality.

    3. DOCSIS Standards:

    If you're opting for a cable modem, consider the Data Over Cable Service Interface Specification (DOCSIS) standard. Choose a modem that adheres to the latest DOCSIS version supported by your ISP. This will ensure better performance and compatibility.

    4. Channel Bonding:

    Modems that support channel bonding combine multiple channels to provide faster download and upload speeds. Look for a modem that has more downstream and upstream channels, as this can significantly enhance your internet speeds, especially during peak hours.

    5. Built-in Router vs. Standalone Modem:

    Decide whether you need a modem with a built-in router or prefer using a standalone modem paired with a separate router. A combination device offers convenience and saves space, while standalone modems allow for more flexibility and the option to upgrade your router independently.

    6. Security Features:

    Ensure that your modem has adequate security features to safeguard your network. Look for modems with built-in firewalls, enabled encryption protocols (such as WPA2), and the ability to create guest networks, if desired. These features help prevent unauthorized access and protect your data.

    7.IPv6 Support:

    With the growing number of internet-connected devices, having IPv6 support in your modem is crucial. IPv6 provides a larger address space and improved scalability, allowing for easier communication between devices on the internet.

    8. Warranty and Customer Support:

    Choose a modem from a reputable manufacturer that offers a warranty and reliable customer support. A good warranty can provide peace of mind, and responsive customer support ensures the quick resolution of any technical issues that may arise.

    9. Budget and Future-Proofing:

    Lastly, consider your budget and the future needs of your internet usage. While it's tempting to go for the cheapest option, investing in a modem with future-proof features like higher speeds and better security may save you the hassle of upgrading shortly.

    Compare Xfinity-compatible routers

    Model

    Price

    Max recommended speed

    Coverage

    ARRIS AX6600

    $355.89

    2,500 Mbps

    5,500 sq. ft.

    NETGEAR Nighthawk X6

    $125.00

    1,000 Mbps

    3,500 sq. ft.

    TP-Link A1C750

    $52.99

    450 Mbps

    2,500 sq. ft.

    NETGEAR R6230

    $72.74

    300 Mbps

    1,200 sq. ft.

     

    What to look for in a router

    1. Speed and Range:

    One of the primary aspects to consider when choosing a router are its speed and range. Look for a router that supports the latest wireless standards, like 802.11ac or 802.11ax. Higher speeds will ensure smoother browsing, faster downloads, and an enhanced streaming experience. Additionally, consider the range or coverage area of the router, particularly if you have a large home or office space.

    1. Bandwidth and Channels:

    To avoid network congestion and inconsistent performance, it's important to choose a router with ample bandwidth and multiple channels. Dual-band routers (2.4 GHz and 5 GHz) offer superior flexibility and can handle multiple devices simultaneously without sacrificing speed. Look for routers that support wide channel ranges, as this will provide better connectivity options.

    1. Security Features:

    In an era where cyber threats are becoming increasingly common, ensuring the security of your network is paramount. Look for routers with built-in security features like WPA2/WPA3 encryption, guest network access controls, and firewall protection. Advanced security options will help safeguard your network and protect your personal information.

    1. Parental Control Options:

    If you have children or want to manage internet usage within your household, routers with robust parental control features are a must. Look for routers that allow you to block specific websites, customize access schedules, and monitor activity. These features will enable you to create a safe and controlled online environment for your family.

    1. Compatibility and Ease of Setup:

    Before purchasing a router, ensure its compatibility with your internet service provider (ISP) and the devices you plan to connect. Most routers are compatible with major ISPs, but it never hurts to double-check. Also, opt for routers that come with easy-to-follow setup instructions or mobile apps that make the installation process hassle-free.

    1. Ethernet Ports and Additional Features:

    Consider the number and type of Ethernet ports available on the router. Having multiple ports will allow you to connect devices through wired connections for optimal speed and stability. Additionally, pay attention to any additional features offered, such as USB ports for file sharing or printer connectivity, advanced antenna technology, or support for mesh networking.

    Conclusion

    There are many Xfinity-supported modems available, but these particular five are ideal for specific plans. Choose the one that corresponds with your package to enjoy an excellent Xfinity experience without having to pay monthly fees for leasing a modem.

    Buy Xfinity-compatible modems now!

    FAQ

    What is an Xfinity modem?

    An Xfinity modem is a device that connects your home or business to the internet through Comcast's Xfinity internet service. It allows you to access high-speed internet and enjoy various online activities such as streaming, gaming, and browsing the web.

    How does an Xfinity modem work?

    An Xfinity modem connects to your broadband cable line and translates the incoming signal into internet service. It then broadcasts the internet connection wirelessly, allowing multiple devices in your home or business to connect to the internet simultaneously.

    Can I use my own modem with Xfinity?

    Yes, you have the option to use your own compatible modem with Xfinity service. However, it is important to check with Comcast to ensure that the modem you plan to use is compatible with their network. Using your own modem can save you from paying a monthly rental fee for the equipment provided by Comcast.

    Why should I rent an Xfinity modem instead of using my own?

    Renting an Xfinity modem from Comcast provides you with technical support and equipment upgrades. If the rented modem malfunctions or becomes outdated, Comcast will replace it at no extra cost. Additionally, renting ensures compatibility with their network, minimizing any potential issues.

    How do I rent an Xfinity modem?

    When you sign up for

    Is there a fee for renting an Xfinity modem?

    Yes, there is a monthly rental fee for the Xfinity modem. The price may vary depending on the specific model of the modem. The rental fee is typically included in your monthly bill from Xfinity.

    Can I upgrade my Xfinity modem?

    Yes, you can upgrade your Xfinity modem at any time. If you are experiencing speed or connectivity issues or if you want to take advantage of newer technologies, you can contact Comcast customer support to inquire about available upgrade options.

    What should I do if my Xfinity modem is not working?

    If your Xfinity modem is not functioning properly, there are a few troubleshooting steps you can take. First, try restarting the modem by unplugging it from the power source, waiting for a few seconds, and then plugging it back in. If this does not resolve the issue, contact Xfinity customer support for further assistance.

    Can I use my Xfinity modem with a different internet service provider?

    Xfinity modems are specifically designed to work with Comcast's Xfinity internet service. While it may be technically possible to use the modem with a different internet service provider, it is recommended that you use a modem that is compatible with the network of your chosen provider to ensure optimal performance.