Best DOCSIS 3.1 Modems of 2026: Top Picks for Every Speed Tier
DOCSIS 3.1 is still the sweet spot for cable internet in 2026. This guide compares the 9 best DOCSIS 3.1 modems by speed tier, upload support, and ...
Experience better connectivity and faster internet speeds with the ARRIS SURFboard S33 DOCSIS 3.1 Cable Modem. From a brand with over 260 million modems sold and growing, this modem is designed to elevate your home network experience.
Save up to $168 per year in cable modem rental fees by owning your modem. The SURFboard S33 is compatible with major U.S. cable internet providers like Cox, Spectrum, and Xfinity.
Upgrade to the latest DOCSIS 3.1 technology, offering 10x faster speeds than DOCSIS 3.0. Enjoy better security, reduced lag during gaming, and multi-gig networking capabilities.
Easily connect the SURFboard S33 to any Wi-Fi router or mesh system for whole-home networking. The modem features a 2.5 GB and 1 GB Ethernet port, supporting secondary IP for home or business use.
Effortlessly set up your modem by plugging in the device, downloading the SURFboard Central App, and following the activation instructions. Then, connect to a Wi-Fi router for seamless networking.
ARRIS is a trusted brand chosen by the world's leading cable internet service providers, ensuring reliable and innovative technology.
Experience improved performance and efficiency with DOCSIS 3.1 technology, reducing latency for high-bandwidth applications like 4K streaming, gaming, and conference calls.
Stay ahead of the curve with the latest DOCSIS technology and a 2.5 GB port, supporting your current and future service plans up to 2.5 GB.
The ARRIS SURFboard S33 is approved for cable internet speed plans up to 2.5-Gbps, allowing you to enjoy superior connectivity and faster streaming throughout your home.
This Arris cable modem is primarily used and is compatible with Comcast Xfinity, Cox & Charter Spectrum services in most areas. To verify that this model will work in your area, always contact your service provider's customer service prior to placing your order with us to confirm that this model will work with your service plan. Some service plan speeds may not be supported.
| Feature | ARRIS Surfboard S33 | ARRIS SB8200 | ARRIS G36 |
|---|---|---|---|
| DOCSIS Technology | DOCSIS 3.1 | DOCSIS 3.1 | DOCSIS 3.1 |
| Maximum Internet Speed | 2.5 Gbps | 2 Gbps | 2.5 Gbps |
| Ethernet Ports | 1 x 2.5 GB, 1 x 1 GB | 2 x 1 GB | 4 x 1 GB, 1 x 2.5 GB |
| Integrated Wi-Fi Router | No | No | Yes, Wi-Fi 6 (up to 3 Gbps) |
| Provider Compatibility | Cox, Spectrum, Xfinity | Cox, Spectrum, Xfinity | Cox, Spectrum, Xfinity |
| Wi-Fi Coverage (if applicable) | N/A | N/A | Up to 2,500 sq ft |
| Setup Process | SURFboard Central App | Web-based setup | SURFboard Central App |
| Potential Annual Savings | Up to $168/year | Up to $168/year | Up to $168/year |
| Future-Proof for Multi Gig Plans | Yes, up to 2.5 GB | Yes, up to 2 GB | Yes, up to 2.5 GB |
| Latency Reduction | Yes | Yes | Yes |
| Space-Saving Design | Standard Modem | Standard Modem | 2-in-1 Modem & Wi-Fi Router |
New to the S33? Our step-by-step manual covers installation, activation, admin login at 192.168.100.1, Wi-Fi and bridge mode guidance, and fixes for the most common issues.
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