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 CAX80 is a strong contender in the modem category, particularly for users with cable internet plans up to 6Gbps. Its compatibility with major providers like Xfinity, Spectrum, and Cox makes it a versatile choice for many households. The built-in WiFi 6 router offers impressive coverage of up to 2,500 square feet, supporting up to 30 devices simultaneously, which is ideal for homes with multiple users. With its DOCSIS 3.1 standard and 32x8 channel bonding, users can expect reliable high-speed internet for activities like streaming or gaming, especially with the ability to aggregate two ports for ultra-fast connectivity.

However, there are a few drawbacks worth mentioning. First, it’s not compatible with Verizon, AT&T, or DSL providers, which could limit options for some users. While the built-in security features, including the NETGEAR Armor software, offer enhanced protection, the 30-day trial means users will need to decide quickly about ongoing protection. Additionally, although it replaces both a modem and router, the upfront investment may be higher than sticking with rentals from ISPs, even if it saves money in the long run.

In terms of setup, the Nighthawk app simplifies the process, making it user-friendly for non-tech-savvy individuals. However, potential buyers should evaluate if they truly need the full capabilities of this modem-router combo, especially if their internet plans do not require such high speeds. This device is a powerful option for those who demand speed and coverage, suitable for modern households with heavy internet usage.

The NETGEAR Nighthawk Modem Router Combo C7000 is a capable device for Xfinity, Spectrum, and Cox users with internet plans up to 800Mbps. Featuring DOCSIS 3.0, it supports high-speed internet up to 1900Mbps with dual-band WiFi, ensuring robust and reliable performance. With coverage of up to 1,800 sq. ft. and the ability to connect up to 30 devices, it is well-suited for medium to large homes with multiple users and devices.

The built-in router with AC1900 speed eliminates the need for separate devices, potentially saving up to $168 annually on rental fees. Equipped with 4 Gigabit Ethernet ports and 1 USB 2.0 port, it offers ample connectivity options for wired devices like gaming consoles and computers. The security features are quite comprehensive, including WPA/WPA2 protocols and NETGEAR Armor software, which provides real-time protection against cyber threats, though only a 30-day trial is included.

The Nighthawk app makes setup and management convenient, even for users who aren't tech-savvy. However, the modem router is not compatible with DSL providers, Verizon, AT&T, or bundled voice services, limiting its versatility. Additionally, some users might find the lack of future-proofing concerning, as DOCSIS 3.1 is not supported. Despite these limitations, the C7000 remains a strong choice for users looking to streamline their home network setup with reliable performance and robust security features.