10 Best Modem For Xfinity Gigabit 2025 in the United States

The NETGEAR Nighthawk Modem Router Combo (CAX30) is a strong contender for those needing a modem for Xfinity Gigabit internet plans. It utilizes the latest DOCSIS 3.1 standard, ensuring top performance with a speed rating of up to 2.7 Gbps, making it suitable for high-speed internet plans up to 2Gbps. The device features 32x8 channel bonding, which helps maximize your internet speeds and overall performance.

Its dual-band WiFi 6 technology offers robust coverage up to 2,000 sq. ft. and supports up to 25 concurrent devices, making it ideal for busy households or small offices. For wired connections, the modem includes 4 Gigabit Ethernet ports and 1 USB 3.0 port, which are useful for connecting various devices like gaming consoles, computers, and streaming players. It also provides a significant advantage by eliminating rental fees from your ISP, potentially saving you up to $168 annually.

One of the standout features is the built-in NETGEAR Armor security software, which offers real-time protection against cyber threats, though it comes with just a 30-day trial period. On the downside, the modem is not compatible with DSL, satellite, or fiber services like Verizon, AT&T, and CenturyLink, which limits its usability to cable internet subscribers. Additionally, while its feature set is impressive, the price might be a consideration for budget-conscious users. Nevertheless, the easy setup and management through the Nighthawk app add to its convenience. The CAX30 is geared towards users with high-speed cable internet plans looking for a reliable, feature-rich modem router combo with excellent security and connectivity options.

The ARRIS SURFboard SB8200 is a DOCSIS 3.1 cable modem that stands out with its advanced technology and support for gigabit internet speeds, making it a good choice for Xfinity users. Its DOCSIS 3.1 compatibility ensures faster speeds and better security compared to older standards. The modem supports speeds up to 1 Gbps and has 32 downstream and 8 upstream channels, which is excellent for high-speed internet and reduces lag during activities like gaming or streaming 4K content.

Another notable feature is its two 1-gigabit Ethernet ports, allowing you to connect multiple devices directly for a fast and reliable wired connection. However, this modem does not have a built-in router, so you will need a separate router for Wi-Fi connectivity. The setup is straightforward with the SURFboard Central App, and it is compatible with a wide range of U.S. cable internet providers, including Comcast Xfinity, Cox, and Spectrum. One of the benefits of owning this modem is the potential cost savings on rental fees from your ISP.

The modem’s compact size and solid build, along with the dedicated customer support, offer added conveniences. The ARRIS SURFboard SB8200 is a robust choice for users seeking high performance and future-proofing for their gigabit internet plans, provided they don’t mind adding a separate router for Wi-Fi.

The ARRIS (S34) Cable Modem is designed for high-speed internet plans and is compatible with major U.S. cable internet providers like Comcast Xfinity, Cox, and Spectrum. It supports DOCSIS 3.1 technology, making it significantly faster than previous DOCSIS 3.0 models, enhancing security, and reducing lag, particularly beneficial for gamers. The modem can handle internet speeds up to 2.5 Gbps, making it suitable for gigabit internet plans and future-proofing your home connectivity.

It also features optimized upload speeds with switchable upstream filters, though this depends on your provider’s capabilities. Setup is straightforward with the SURFboard Central App, ensuring a secure and easy activation process. For those focused on saving money, owning this modem can cut down on rental fees, with potential savings up to $168 per year, although this varies by provider.

The modem includes a 2.5 Gbps Ethernet port and an additional 1 Gbps port, allowing for combined download speeds up to 3.5 Gbps, which is excellent for heavy internet usage scenarios. However, it lacks a built-in router, meaning you'll need a separate router for Wi-Fi capabilities. It is essential to verify compatibility with your specific internet service provider. The ARRIS (S34) is a strong contender for users needing a high-speed, future-proof modem, with lack of built-in router being a notable drawback.