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10 Best Cable Modem 2025 in the United States

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Our Top Picks

#1

Winner

ARRIS (S34) - Cable Modem - Fast DOCSIS 3.1 Multi-Gigabit Cable Modem, for Comcast Xfinity, Cox, Spectrum & More, 2.5 Gbps Max Internet Speeds, Next-Generation Upload Optimized, 2 Year Warranty

The ARRIS S34 is a solid choice for anyone needing a cable modem that supports high-speed internet, particularly with DOCSIS 3.1 technology. With a maximum speed of 2.5 Gbps, it’s designed for users who want to future-proof their internet setup, making it ideal for gaming, streaming, and heavy internet usage. One of its strengths is compatibility with major U.S. providers like Comcast Xfinity, Cox, and Spectrum, which ensures that many users can benefit from its features. The ability to save on rental fees is notable; owning this modem could potentially save you up to $168 per year, depending on your provider's fees.

The modem also excels in upload speeds, being optimized for the new upload service tiers, which is great for users who often upload large files or engage in video conferencing. The device comes with two Ethernet ports, including a 2.5 Gbps port, allowing for multiple wired connections without sacrificing speed.

While the setup is generally user-friendly, it does require a Wi-Fi router for full functionality, meaning that those who don’t already own one will need to make an additional purchase. Additionally, some users might find it slightly bulky compared to other models. If you’re looking for a powerful modem that can handle heavy internet usage and save you money in the long run, the ARRIS S34 is definitely worth considering. Just keep in mind that you will need to pair it with a compatible router to take full advantage of its features.

Customer Highlights

A summary of real customer reviews to highlight what shoppers are saying!
DOCSIS Standard
The modem handles future bandwidth upgrades well, with 32 x 8 channels for DOCSIS 3.0 and 2 x 2 channels for DOCSIS 3.1.
Speed
Performance is excellent, often exceeding purchased speeds, and the device runs cool without needing resets.
Built-in Router
The ARRIS SBG8300 gateway is an excellent choice for switching to high-speed cable internet, with straightforward configuration and reliable performance.
#2

ARRIS (SB8200) - Cable Modem - Fast DOCSIS 3.1 32x8 Gigabit Cable Modem , Approved for Comcast Xfinity, Cox, Charter Spectrum, & more | 1 Gbps Max Internet Speed, 4 OFDM Channels

The ARRIS SURFboard SB8200 is a solid choice for those looking to upgrade their home internet experience, particularly for users with high-speed connections. With DOCSIS 3.1 technology, it supports internet speeds up to 1 Gbps, making it a great fit for heavy internet users who stream, game, or download large files. Its compatibility with major U.S. cable providers like Xfinity, Cox, and Spectrum ensures that it can meet the needs of many households.

One of the standout features of the SB8200 is its channel bonding capability, which allows for better speed and efficiency. This modem includes two 1-Gigabit ethernet ports, enabling you to connect multiple devices directly for stable wired connections. Additionally, you can save money over time by owning the modem instead of renting one from your ISP, potentially cutting your bills significantly.

While the SB8200 is powerful, it lacks a built-in Wi-Fi router, which means you'll need to purchase a separate router for wireless connectivity. This could be an added expense for some users. The setup process is straightforward with the SURFboard Central App, but those who aren't particularly tech-savvy might still find it a bit challenging if they encounter issues. Moreover, it’s slightly bulkier compared to other modems, which could be a consideration for those with limited space. Customer support is available, which is reassuring for first-time users. The ARRIS SB8200 is a powerful modem for anyone looking to maximize their internet speed, but make sure to pair it with a compatible router for a complete home connectivity solution.

Customer Highlights

A summary of real customer reviews to highlight what shoppers are saying!
ISP Compatibility
Setting up the modem is straightforward, but be prepared for potential hurdles with your ISP, like unnecessary tech visits.
Speed
Despite initial connectivity issues, once resolved, the SB8200 delivers excellent speed and stability.
Ethernet Ports
It's compact and easy to hook up, with two Ethernet ports for added convenience.
Built-in Router
The SB8200 is a fast modem that works exceptionally well with high-end routers, providing a rock-solid connection.
#3

ARRIS (S33) - Cable Modem - Fast DOCSIS 3.1 Multi-Gigabit WiFi For Comcast Xfinity, Cox, Spectrum & More 1 & 2.5 Gbps Ports 2.5 Gbps Max Internet Speeds 4 OFDM Channels 2 Year Warranty

The ARRIS S33 cable modem is a solid choice for those looking to save money on rental fees by owning their modem. It supports the latest DOCSIS 3.1 technology, which is 10x faster than the previous DOCSIS 3.0, ensuring faster speeds and better security. This makes it a good fit for heavy internet users, gamers, and anyone with a need for fast and reliable internet connectivity.

The modem is compatible with major U.S. cable internet providers like Comcast Xfinity, Cox, and Spectrum, and it supports internet speed plans up to 2.5 Gbps, which should be sufficient for most households and small businesses. The setup process is straightforward, requiring just a plug-in and the use of the SURFboard Central App.

However, it is important to note that this modem does not have a built-in Wi-Fi router, so you will need to connect it to a separate router for wireless networking. Additionally, while it includes a 1 Gbps and a 2.5 Gbps Ethernet port, the lack of multiple Ethernet ports may be a limitation for users needing to connect multiple wired devices directly to the modem. Despite these minor drawbacks, the ARRIS S33 offers excellent performance and is a worthwhile investment for anyone needing a high-speed, reliable cable modem.

Customer Highlights

A summary of real customer reviews to highlight what shoppers are saying!
ISP Compatibility
Despite the excellent performance, activating this modem with Xfinity can be a challenging process involving multiple steps and interactions with support.
Speed
The ARRIS S33 modem, paired with Eero Pro 6 mesh routers, delivers lightning-fast internet speeds throughout a large home.

Buying Guide for the Best Cable Modem

Choosing the right cable modem is essential for ensuring a reliable and fast internet connection. A cable modem connects your home network to your internet service provider (ISP) and can significantly impact your internet speed and performance. When selecting a cable modem, it's important to consider several key specifications to ensure it meets your needs and is compatible with your ISP. Understanding these specifications will help you make an informed decision and get the best performance out of your internet service.
DOCSIS StandardDOCSIS (Data Over Cable Service Interface Specification) is the technology standard that determines the speed and performance of your cable modem. The most common standards are DOCSIS 3.0 and DOCSIS 3.1. DOCSIS 3.0 is suitable for most users and supports speeds up to 1 Gbps, which is sufficient for streaming, gaming, and general internet use. DOCSIS 3.1 is the latest standard and supports speeds up to 10 Gbps, making it ideal for users with very high-speed internet plans or those who want to future-proof their setup. Choose DOCSIS 3.1 if you have a gigabit internet plan or anticipate needing higher speeds in the future.
Channel BondingChannel bonding refers to the number of downstream and upstream channels a modem can use simultaneously. More channels mean higher potential speeds and better performance during peak usage times. Common configurations include 8x4, 16x4, 24x8, and 32x8, where the first number represents downstream channels and the second number represents upstream channels. For basic internet usage, an 8x4 modem is sufficient. For higher speeds and more reliable performance, especially in busy households, consider a modem with 16x4 or higher channel bonding.
ISP CompatibilityNot all cable modems are compatible with every ISP. It's crucial to check if the modem you are considering is approved by your ISP. Most ISPs provide a list of compatible modems on their websites. Using a modem that is not approved by your ISP can result in connectivity issues or reduced performance. Ensure you verify compatibility before making a purchase to avoid any potential problems.
Speed TierThe speed tier of a cable modem indicates the maximum internet speed it can handle. This should match or exceed the speed of your internet plan. For example, if you have a 300 Mbps internet plan, you should choose a modem that supports at least 300 Mbps. If you plan to upgrade your internet speed in the future, consider a modem with a higher speed tier to avoid needing a new modem later.
Ethernet PortsEthernet ports on a cable modem allow you to connect wired devices directly to the modem for a more stable and faster connection. Most modems come with at least one Gigabit Ethernet port, but some models offer multiple ports. If you have several devices that require a wired connection, such as gaming consoles, smart TVs, or desktop computers, consider a modem with multiple Ethernet ports to accommodate all your devices.
Built-in RouterSome cable modems come with a built-in router, combining two devices into one. This can save space and reduce the number of devices you need to manage. However, built-in routers may not offer the same performance or features as standalone routers. If you have a large home, many connected devices, or specific networking needs, you might prefer a separate modem and router. For simpler setups or smaller homes, a modem with a built-in router can be a convenient and cost-effective option.

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