10 Best Xfinity Modems 2026 in the United States
#1
Winner
Hitron CODA56 DOCSIS 3.1 Cable Modem ONLY (NOT Fiber) | 2.5 Gbps | NO WiFi/Voice/Router | Single Ethernet Port | Xfinity/Spectrum/Cox Compatible | Requires Separate WiFi Router
The Hitron CODA56 Multi-Gigabit DOCSIS 3.1 Modem is designed for users with high-speed internet plans, supporting speeds up to 2.5 Gbps. It's compatible with major ISPs like Xfinity, Spectrum, and Cox. The modem shines with its DOCSIS 3.1 standard, which is ten times faster than DOCSIS 3.0, ideal for users who need fast internet for gaming, streaming, and video conferencing. One major advantage is the ability to save on rental fees, potentially saving up to $168 annually.
Rating
10.0
Chosen by1,474
Speed
Compatibility
Most important from
2821 reviews
#2
Hitron CODA DOCSIS 3.1 - Cable Internet ONLY (NOT Compatible with Fiber/DSL) | Up to 1 Gbps Cable Modem | Requires WiFi Router | Xfinity, Spectrum, Cox Certified
The Hitron CODA DOCSIS 3.1 Modem is a strong contender if you're looking to save on rental fees and need a modem that supports high-speed internet plans, up to 1 Gbps. It is certified to work with major ISPs like Comcast Xfinity, Charter Spectrum, and Cox, making it a versatile option for various users. A key advantage is its DOCSIS 3.1 standard, which offers speeds 10 times faster than DOCSIS 3.0, ensuring smooth streaming, gaming, and conferencing. This modem can be an excellent fit for those with heavy internet usage who want reliable performance and reduced latency.
Rating
9.4
Compatibility
DOCSIS Standard
Speed
Most important from
2821 reviews
#3
ARRIS SURFboard SB8200 DOCSIS 3.1 Multi‑Gig Cable Modem | 2 -1Gbps Ethernet Ports | Works with Xfinity, Cox, Spectrum | For Cable Internet Plans up to 2Gbps | Modem Only, Router Required
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.
Rating
9.1
Speed
Compatibility
Ethernet Ports
Most important from
20021 reviews
Top 10 Best Xfinity Modems 2026 in the United States
#1
Winner
Hitron CODA56 DOCSIS 3.1 Cable Modem ONLY (NOT Fiber) | 2.5 Gbps | NO WiFi/Voice/Router | Single Ethernet Port | Xfinity/Spectrum/Cox Compatible | Requires Separate WiFi Router
Hitron CODA56 DOCSIS 3.1 Cable Modem ONLY (NOT Fiber) | 2.5 Gbps | NO WiFi/Voice/Router | Single Ethernet Port | Xfinity/Spectrum/Cox Compatible | Requires Separate WiFi Router
DOCSIS Standard: DOCSIS 3.1
Speed: up to 2.5 Gbps
Compatibility: Xfinity, Spectrum, Cox
Built-in Router: No
Ethernet Ports: 1 x 2.5 gigabit port
Chosen by 1474 this week
Hitron CODA DOCSIS 3.1 - Cable Internet ONLY (NOT Compatible with Fiber/DSL) | Up to 1 Gbps Cable Modem | Requires WiFi Router | Xfinity, Spectrum, Cox Certified
Hitron CODA DOCSIS 3.1 - Cable Internet ONLY (NOT Compatible with Fiber/DSL) | Up to 1 Gbps Cable Modem | Requires WiFi Router | Xfinity, Spectrum, Cox Certified
Compatibility: PC, Router, Ethernet devices
DOCSIS Standard: DOCSIS 3.1
Speed: up to 1 Gbps
Built-in Router: No
ISP Approval: Comcast, Charter, Cox
ARRIS SURFboard SB8200 DOCSIS 3.1 Multi‑Gig Cable Modem | 2 -1Gbps Ethernet Ports | Works with Xfinity, Cox, Spectrum | For Cable Internet Plans up to 2Gbps | Modem Only, Router Required
ARRIS SURFboard SB8200 DOCSIS 3.1 Multi‑Gig Cable Modem | 2 -1Gbps Ethernet Ports | Works with Xfinity, Cox, Spectrum | For Cable Internet Plans up to 2Gbps | Modem Only, Router Required
DOCSIS Standard: DOCSIS 3.1
Speed: up to 1 Gbps
Compatibility: Comcast Xfinity, Cox, Spectrum
Built-in Router: No
Ethernet Ports: Two 1-Gigabit ports
Arris Surfboard S33 DOCSIS 3.1 Multi‑Gig Cable Modem | 2.5Gbps + 1Gbps Ethernet Ports | Works with Xfinity, Cox, Spectrum | for Cable Internet Plans up to 2.5Gbps | Modem Only, Router Required
Arris Surfboard S33 DOCSIS 3.1 Multi‑Gig Cable Modem | 2.5Gbps + 1Gbps Ethernet Ports | Works with Xfinity, Cox, Spectrum | for Cable Internet Plans up to 2.5Gbps | Modem Only, Router Required
Compatibility: Xfinity, Cox, Spectrum, Charter, Comcast
DOCSIS Standard: 3.1
Speed: 2.5 Gigabits Per Second
Built-in Router: No
ISP Approval: Charter, Comcast, Cox, Spectrum, Xfinity
ARRIS (G36) - Cable Modem Router Combo - Fast DOCSIS 3.1 Gigabit WiFi 6 (AX3000), 1.2 Gbps Max Speeds, Approved for Comcast Xfinity, Cox, Spectrum & More [Check with your provider for compatibility]
ARRIS (G36) - Cable Modem Router Combo - Fast DOCSIS 3.1 Gigabit WiFi 6 (AX3000), 1.2 Gbps Max Speeds, Approved for Comcast Xfinity, Cox, Spectrum & More [Check with your provider for compatibility]
Compatibility: Comcast Xfinity, Cox, Spectrum
DOCSIS Standard: DOCSIS 3.1
Speed: Up to 1.2 Gbps
Built-in Router: Yes
ISP Approval: Comcast Xfinity, Cox, Spectrum
Related Products
Up to 38% off
Arris (S33-RB) - Cable Modem - DOCSIS 3.1 Multi-Gigabit Cable Modem for Comcast Xfinity, Cox, Spectrum & More 1 & 2.5 Gbps Ports 2.5 Gbps Max Internet Speeds 4 OFDM Channels 1 Year Warranty - Renewed
Arris (S33-RB) - Cable Modem - DOCSIS 3.1 Multi-Gigabit Cable Modem for Comcast Xfinity, Cox, Spectrum & More 1 & 2.5 Gbps Ports 2.5 Gbps Max Internet Speeds 4 OFDM Channels 1 Year Warranty - Renewed
Compatibility: Charter, Comcast, Cox, Most Cable Providers
DOCSIS Standard: DOCSIS 3.1
Speed: 2500 Mbps
Channels: 4 OFDM channels
Built-in Router: No
ISP Approval: Charter, Comcast, Cox, Most Cable Providers
Motorola MB8611 DOCSIS 3.1 Multi-Gig Cable Modem | Pairs with Any WiFi Router | Approved for Comcast Xfinity, Cox Gigablast, Spectrum | 2.5 Gbps Port | 2500 Mbps Max Internet Speeds
Motorola MB8611 DOCSIS 3.1 Multi-Gig Cable Modem | Pairs with Any WiFi Router | Approved for Comcast Xfinity, Cox Gigablast, Spectrum | 2.5 Gbps Port | 2500 Mbps Max Internet Speeds
DOCSIS Standard: DOCSIS 3.1
Speed: 2.5 Gbps
Compatibility: Comcast Xfinity, Cox, Spectrum
Built-in Router: No
Ethernet Ports: 1 x 2.5 Gbps
ARRIS (G34) - Cable Modem Router Combo - Fast DOCSIS 3.1 Gigabit WiFi 6 (AX3000), Approved for Comcast Xfinity, Cox, Spectrum & More, 1 Gbps Max Internet Speeds
ARRIS (G34) - Cable Modem Router Combo - Fast DOCSIS 3.1 Gigabit WiFi 6 (AX3000), Approved for Comcast Xfinity, Cox, Spectrum & More, 1 Gbps Max Internet Speeds
Compatibility: Xfinity, Cox, Spectrum, major US cable
DOCSIS Standard: DOCSIS 3.1
Speed: up to 2.5 Gbps
Built-in Router: Yes
ISP Approval: Certified by CableLabs, approved ISPs
ARRIS - SURFboard S33 32 x 8 DOCSIS 3.1 Multi-Gig Cable Modem with 2.5 Gbps (Renewed)
ARRIS - SURFboard S33 32 x 8 DOCSIS 3.1 Multi-Gig Cable Modem with 2.5 Gbps (Renewed)
Compatibility: Xfinity, Spectrum, Cox
DOCSIS Standard: DOCSIS 3.1
Speed: 2.5 Gbps
Channels: 32 down, 8 up
Built-in Router: No
ISP Approval: Xfinity, Spectrum, Cox
#10
Motorola MG8702 | DOCSIS 3.1 Cable Modem + Wi-Fi Router (High Speed Combo) with Intelligent Power Boost | AC3200 Wi-Fi Speed | Approved for Comcast Xfinity, Cox, and Charter Spectrum
Motorola MG8702 | DOCSIS 3.1 Cable Modem + Wi-Fi Router (High Speed Combo) with Intelligent Power Boost | AC3200 Wi-Fi Speed | Approved for Comcast Xfinity, Cox, and Charter Spectrum
Compatibility: Xfinity, Cox, Spectrum
DOCSIS Standard: 3.1
Built-in Router: AC3200 WiFi
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Buying Guide for the Best Xfinity Modems
Choosing the right modem for your Xfinity internet service is crucial for ensuring a reliable and fast internet connection. The modem is the device that connects your home network to the internet, so it's important to pick one that meets your needs and is compatible with your service plan. Here are some key specifications to consider when selecting an Xfinity modem, along with explanations to help you make an informed decision.CompatibilityCompatibility refers to whether the modem works with your specific Xfinity internet plan. This is important because not all modems are compatible with all service plans. To navigate this, check the modem's specifications or the Xfinity website to ensure it supports your internet speed tier. If you have a high-speed plan, make sure the modem can handle those speeds. For lower-speed plans, a basic modem will suffice. Your need for compatibility is guided by your current or planned Xfinity service plan.
DOCSIS StandardDOCSIS (Data Over Cable Service Interface Specification) is the technology standard that modems use to deliver internet service. 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, while DOCSIS 3.1 is more future-proof and supports speeds up to 10 Gbps. If you have a high-speed plan or want to ensure your modem remains relevant for future upgrades, opt for DOCSIS 3.1. For standard internet usage, DOCSIS 3.0 is typically sufficient.
SpeedThe speed rating of a modem indicates the maximum internet speed it can handle. This is important because it determines how well the modem can support your internet activities. Modems are often rated in Mbps (megabits per second) or Gbps (gigabits per second). For basic browsing and streaming, a modem with speeds up to 300 Mbps is adequate. For gaming, 4K streaming, or multiple users, consider a modem with speeds of 1 Gbps or higher. Your internet usage patterns will guide you in choosing the right speed.
ChannelsChannels refer to the number of data streams the modem can handle simultaneously. This is important for managing internet traffic and ensuring a stable connection. Modems typically have a certain number of downstream (download) and upstream (upload) channels. For light internet use, a modem with 8x4 channels (8 downstream and 4 upstream) is sufficient. For heavy use, such as gaming or streaming, look for modems with 16x4 or 32x8 channels. Your internet usage and the number of devices connected will help determine the right number of channels.
Built-in RouterSome modems come with a built-in router, which combines the functions of both devices into one unit. This is important for convenience and reducing the number of devices you need. If you prefer a simple setup and have a small to medium-sized home, a modem-router combo can be a good choice. However, if you have a large home or require advanced networking features, a separate modem and router might be better. Your preference for simplicity versus advanced features will guide this decision.
ISP ApprovalISP approval means that the modem has been tested and certified by Xfinity to work with their service. This is important to ensure compatibility and optimal performance. To navigate this, check the list of approved modems on the Xfinity website. Choosing an approved modem ensures that you won't encounter issues with your internet service. Your need for a hassle-free experience will guide you to select an ISP-approved modem.