10 Best Gigabit Modems 2025 in the United States

The NETGEAR Nighthawk Modem Router Combo (CAX30) is a versatile and powerful choice for those looking for a gigabit modem with added router functionality. It uses the latest DOCSIS 3.1 standard and supports 32x8 channel bonding, ensuring high-speed internet and efficient data handling. This makes it suitable for cable provider plans up to 2Gbps, catering well to users with high-speed internet needs. It is compatible with major cable providers like Xfinity, Spectrum, and Cox, though it won't work with Verizon, AT&T, CenturyLink, DSL providers, or satellite services like DirecTV and DISH. This may limit its utility for some users depending on their internet service provider.

The dual-band WiFi 6 capability offers speeds up to 2.7Gbps and can cover up to 2,000 square feet, supporting up to 25 devices simultaneously, making it ideal for medium to large homes with multiple devices. The four Gigabit Ethernet ports support port aggregation, useful for devices like gaming consoles and PCs that benefit from wired connections. However, the absence of higher-speed Ethernet ports may be a drawback for some advanced users. Security is a strong point with NETGEAR Armor providing real-time protection against cyber threats and automatic firmware updates to ensure the latest safety features. The initial 30-day trial of security software is a nice addition but will require a subscription afterward.

Setup and management are straightforward via the Nighthawk app, which simplifies the process for less tech-savvy users. The modem router's ability to replace separate modem and router units can result in cost savings on rental fees, which is a significant advantage. Potential buyers should be mindful of its compatibility limitations and consider their specific needs regarding Ethernet port speeds and ongoing security software costs.

The ARRIS S34 modem is a high-performance device that supports the latest DOCSIS 3.1 standard, making it a great option for those looking to future-proof their home internet. This modem is 10 times faster than the previous DOCSIS 3.0 standard, ensuring better security and reduced lag for activities like gaming. It is compatible with major U.S. cable internet providers such as Comcast Xfinity, Cox, and Spectrum, making it a versatile choice for many users.

Additionally, it supports internet speed plans up to 2.5 Gbps, which is beneficial for households with high data demands. The modem features a 2.5 Gbps Ethernet port and an additional 1 Gbps Ethernet port, allowing for combined download speeds up to 3.5 Gbps. This setup makes it suitable for connecting multiple devices, such as laptops, gaming consoles, and smart televisions, which is particularly useful for tech-savvy households or small offices.

It's important to note that this modem does not have a built-in router, so users will need to connect it to a separate Wi-Fi router for wireless networking. The setup process is straightforward with the SURFboard Central App, ensuring a secure and simple activation. One of the main advantages is the potential cost savings by eliminating the need for rental fees from your ISP, which can add up over time. On the downside, the device's reliance on ISP-specific upstream filters for optimized upload speeds means that the full benefits might vary depending on your provider's capabilities.

The ARRIS S33 Cable Modem is a strong contender in the gigabit modems category, boasting the latest DOCSIS 3.1 technology. This makes it significantly faster than the older DOCSIS 3.0 standard, ensures better security, and reduces lag, which is a big plus for gamers. The modem supports multi-gigabit networking, which means it can handle very fast speeds on existing copper cables, making it future-proof for speed upgrades up to 2.5 Gbps.

It includes both 1 Gbps and 2.5 Gbps Ethernet ports, catering to different user needs and setups. These ports also make it versatile for connecting various devices like personal computers and routers. However, it is worth noting that the modem does not have a built-in router, so users will need to purchase a separate Wi-Fi router for wireless networking. Setting up the ARRIS S33 is straightforward with the SURFboard Central App, allowing for a secure and easy activation process.

Its compact size (4.74 x 1.8 x 5.14 inches) makes it easy to place in any home setup. Compatibility is another major strength, as it works with major U.S. cable internet providers like Comcast Xfinity, Cox, and Spectrum, ensuring broad usability. This modem is also a cost-effective solution for those looking to save on rental fees from their ISP, potentially offering significant annual savings. A potential drawback is that it is primarily suited for cable internet users, so it won't work for DSL or fiber optic connections.