Selecting the right modem for your Xfinity internet service is crucial for maximizing your online experience. A good modem not only provides stable connectivity but also ensures that you’re getting the most out of your internet plan. In this article, we’ll guide you through the process of choosing the best Xfinity modem for your needs and address some frequently asked questions.

Xfinity modem

Understanding Xfinity Compatible Modems

Xfinity offers a list of approved modems that are compatible with their service. Choosing a modem from this list ensures compatibility and optimal performance. These modems vary in features, speeds, and price points, catering to different user needs—from basic browsing to high-demand gaming and streaming.

Factors to Consider

1. Internet Plan Compatibility

Ensure the modem you choose can handle the maximum speed of your internet plan. Using a modem that supports higher speeds than your current plan might offer future-proofing if you plan to upgrade.

2. DOCSIS Technology

Xfinity uses the Data Over Cable Service Interface Specification (DOCSIS) standard, with the latest being 3.1. A DOCSIS 3.1 modem is ideal for high-speed internet and is backward compatible with earlier versions.

3. Modem-Router Combo vs. Separate Units

Decide whether you want a modem-router combo or separate devices. A combo is convenient and requires less space, but separate devices often provide better performance and flexibility.

4. Price

Modems vary in price based on their features. While investing in a high-end modem can be cost-effective in the long run, ensure it aligns with your budget and internet usage needs.

Popular Xfinity Modems


The XB7 is a powerful modem-router combo that supports DOCSIS 3.1 technology, offering high-speed internet and enhanced coverage. It’s well-suited for homes with multiple devices and heavy internet usage.


The XB8 is the latest offering from Xfinity, enhancing the features of XB7 with even better speed and more efficient performance, thanks to its support for Wi-Fi 6 technology.

The Netgear Xfinity router is designed to work with the Xfinity network and provides fast and reliable internet speed. It is also certified by Xfinity. In addition, customers may add a third participant to the two-party chat because it features two integrated phone lines facilitating a 3-way conference call. 

Frequently Asked Questions

Can I use a different modem with Xfinity?

Yes, you can use a different modem with Xfinity as long as it is compatible with their service. Check Xfinity’s official list of approved modems to ensure compatibility.

What is the difference between XB7 and XB8?

The main difference is that XB8 supports Wi-Fi 6 technology, which offers better performance and efficiency compared to the Wi-Fi 5 technology in XB7.

How do I tell what Xfinity modem I have?

Look for a model number on the device itself, usually found on the bottom or back of the modem. You can also check this information through your Xfinity account online.

What is the fastest Xfinity router?

The XB8 is currently the fastest Xfinity router, offering support for Wi-Fi 6 technology and optimized for high-speed data transmission.

How fast is Xfinity XB8?

The XB8 supports internet speeds up to 2.5 Gbps, although the actual speeds will depend on your Xfinity internet plan and network conditions.

Does Xfinity allow 2 modems?

No, Xfinity typically does not allow two modems on a single residential account. For additional coverage, consider using Wi-Fi extenders or mesh networks.

What router does Xfinity use?

Xfinity commonly provides its customers with its own branded gateways, like the XB7 and XB8, which function as both modems and routers.

Is Xfinity Wi-Fi 6 or 6E?

Xfinity’s latest device, the XB8, supports Wi-Fi 6. There is no mention of Wi-Fi 6E support as of the latest updates, but technology standards are continually evolving.

Choosing the right Xfinity router involves understanding your internet needs, the technical specifications of available modems, and how these devices fit into your home network. With the right modem, you can enjoy reliable and fast internet, making your online experience smoother and more enjoyable.