10 Best Xfinity Modems 2025 in the United States

The ARRIS SURFboard SB8200 is a robust cable modem designed for high-speed internet access, especially for users of Comcast Xfinity and other major U.S. providers. It utilizes the advanced DOCSIS 3.1 technology, which significantly increases internet speed potential, offering up to 1 Gbps, making it suitable for heavy streaming and gaming. This modem includes two 1-Gigabit Ethernet ports, providing flexibility for wired connections to other devices or a Wi-Fi router.

One of the key advantages of the SB8200 is its ability to save you money in the long run by eliminating the need for rental fees from your ISP, potentially saving up to $168 annually. It’s compatible with various cable internet providers, which adds to its versatility. The device is also designed for easy setup; users simply need to plug it in and follow the instructions via the SURFboard Central App.

There are a few drawbacks to consider. While the built-in features are excellent for standard use, the SB8200 doesn't have a built-in Wi-Fi router. This means you'll need to purchase a separate router for wireless connectivity, which could be an additional expense. Additionally, while the modem is compatible with most major ISPs, it’s important to confirm compatibility with your specific plan to avoid any service interruptions. Some users may find the initial setup challenging if they're not very tech-savvy.

The NETGEAR Nighthawk Cable Modem WiFi 6 Router Combo is a solid choice for anyone looking to enhance their internet experience, especially for Xfinity users. With DOCSIS 3.1 technology and compatibility with major cable providers like Spectrum and Cox, it supports high-speed plans up to 2Gbps, making it ideal for households with multiple devices. The dual-band WiFi 6 (AX2700) offers impressive coverage of up to 2,500 sq. ft. and supports up to 25 concurrent devices, which is a plus for larger homes or families with many connected devices.

A standout feature is the built-in security provided by NETGEAR Armor, which offers real-time protection against hackers and helps ensure privacy. This is an important consideration for those concerned about the security of their home networks. Plus, the device’s easy setup through the Nighthawk app simplifies the installation process, making it accessible even for tech novices.

This modem/router combo is not compatible with certain internet providers, such as Verizon and AT&T, which may limit its appeal for users who are not on cable services. Additionally, while it does save on equipment rental fees, the initial investment might be higher than renting equipment from your ISP. Furthermore, while the security features are strong, the included subscription is only for 90 days, and continued protection requires an additional fee.

The Motorola MG8702 is a solid choice if you're looking for a modem-router combo compatible with Xfinity and other major cable providers like Cox and Spectrum. It supports the latest DOCSIS 3.1 standard, which means it's ready for the fastest internet plans available today and is future-proof for upcoming speeds. The built-in AC3200 WiFi router offers strong wireless performance with features like Power Boost and Beamforming that help extend your WiFi range and improve signal strength throughout your home.

This combo device can save you money by eliminating rental fees from your ISP, which can add up over time. Setup is made easier with a mobile app that helps you manage your network, including guest access and parental controls. While the MG8702 supports dual-band WiFi, it may not be the best fit for extremely large homes or users needing the absolute top-tier WiFi speeds seen in newer WiFi 6 devices. Some users might also find the device size a bit bulky compared to standalone modems or routers.

It remains reliable and is backed by Motorola’s tech support, making it a user-friendly option for most households looking to upgrade their cable internet experience without dealing with multiple devices.