10 Best Gigabit Modems 2025 in the United States

The NETGEAR Nighthawk CAX80 is a solid choice for users with cable internet plans up to 2 Gbps, thanks to its DOCSIS 3.1 technology and 32x8 channel bonding, which help deliver reliable high-speed internet. It stands out with built-in WiFi 6 support, offering faster wireless speeds and better coverage (up to 3,000 sq. ft.) for multiple devices, making it suitable for busy homes with many connected gadgets.

The modem offers a good range of wired connections, featuring one 2.5 Gigabit Ethernet port alongside four standard Gigabit ports, allowing fast and versatile wired setups for computers, gaming consoles, or other devices. Its compatibility with major cable providers like Xfinity, Spectrum, and Cox ensures it will work smoothly for most users with these services, but it does not support DSL providers or bundled voice services. The built-in router supports WPA/WPA2 wireless security protocols to keep your network safe, though it lacks the latest WPA3 security.

By combining modem and router functions, it saves you rental fees, though it is a bit larger and heavier than typical standalone devices. This model suits those needing a high-speed cable modem-router combo with strong WiFi 6 performance and multiple connection options, but it is not suitable if you rely on DSL or require the absolute top-tier security features.

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 NETGEAR Nighthawk CM3000 is a powerful DOCSIS 3.1 cable modem designed for ultra-fast internet plans, supporting speeds up to 2.5Gbps download and 1Gbps upload. It uses mid/high-split technology, making it especially suitable for users on top-tier plans from providers like Xfinity, Spectrum, and Cox. This modem offers three Ethernet ports, including a multi-gig 2.5Gbps port, which allows for very fast wired connections when paired with a compatible router.

While it doesn't have a built-in router, it works well with NETGEAR's WiFi 6E or WiFi 7 routers to create a high-performance home network. Its compatibility with all major US cable providers means it should easily fit into most setups. The modem supports modern security protocols, helping keep your network safe. One clear advantage is the potential to save on monthly rental fees by owning this device.

The modem is made for the US market only and requires a separate router if you need WiFi. Also, although it supports very high speeds, users with slower internet plans might not fully benefit from all its capabilities. This modem is an excellent choice for anyone with a fast cable internet plan looking to maximize speed and reduce ongoing rental costs, provided they have or plan to use a separate router for wireless connectivity.