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Best ARRIS Modems

High-performance ARRIS modems for cable internet, featuring DOCSIS 3.1 multi-gig speeds compatible with Xfinity, Cox, and Spectrum. Modems and combos for reliable connectivity.

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ARRIS CM820A DOCSIS 3.0 8x4 Cable Modem - High-Speed 300Mbps+ for Home & Business

The ARRIS CM820A is a DOCSIS 3.0 cable modem with 8x4 bonded channels delivering speeds over 300Mbps. Its superior throughput and ARRIS reliability suit home or small business users seeking high-performance cable internet.

  • Unlock ultra-high speeds over 300Mbps with 8x4 channel bonding for seamless streaming and downloads
  • Enjoy reliable performance backed by ARRIS industry-leading quality for worry-free connectivity
  • Boost productivity for homes and small businesses with flexible downstream/upstream bonding
  • Block interference effortlessly with built-in MoCA immunity filter
  • Tune into channels up to 1GHz using dual independent RF tuners for optimal signal reception

Exceptional 8x4 throughput for high-speed data access. Flexible channel bonding adapts to your needs. Robust build meets surge and immunity requirements.

Compatibility must be verified with your ISP. Limited to DOCSIS 3.0, not ideal for gigabit plans. Activation process may require provider steps.

ARRIS SURFboard G20 DOCSIS 3.1 WiFi 6 AX3000 Cable Modem Router Combo - Gigabit Speeds for Xfinity, Spectrum, Cox

The ARRIS SURFboard G20 is a DOCSIS 3.1 cable modem router combo delivering up to 1 Gbps speeds with WiFi 6 AX3000 and upload optimization to 450 Mbps. It's perfect for households on Xfinity, Cox, or Spectrum seeking fast streaming, gaming, and video calls without rental fees.

  • Achieve gigabit download and 450 Mbps upload speeds for lag-free gaming and video calls
  • Eliminate monthly rental fees and save up to $168 yearly with your own modem
  • WiFi 6 dual-band coverage extends fast wireless throughout your entire home
  • All-in-one design combines modem and router to save space and simplify setup
  • Two 1 Gbps Ethernet ports enable reliable wired connections for multiple devices

DOCSIS 3.1 technology supports 10x faster speeds than DOCSIS 3.0 with better security. Built-in WiFi 6 router provides greater range and efficiency for multiple devices. Broad compatibility with major cable providers like Xfinity, Spectrum, and Cox.

Only two Ethernet ports may limit wired connections for larger setups. Requires cable ISP service and activation process. WiFi speeds capped at 1 Gbps, not ideal for multi-gigabit plans.

ARRIS SURFboard SBG7400AC2 DOCSIS 3.0 Cable Modem Router Combo: AC2350 WiFi, 4 Gigabit Ports, Up to 960Mbps - Cox, Spectrum, Xfinity Approved

The ARRIS SBG7400AC2 is a DOCSIS 3.0 modem router combo with 24x8 channels, AC2350 WiFi, and four 1Gbps Ethernet ports for speeds up to 960 Mbps. Gamers, streamers, and households on Cox, Spectrum, or Xfinity should buy it to eliminate rental fees and boost home network performance.

  • Eliminate monthly rental fees and save up to $168 yearly with your own reliable modem
  • Achieve blazing-fast streaming and gaming with 24x8 DOCSIS 3.0 channels up to 960 Mbps
  • Enjoy whole-home WiFi coverage via AC2350 dual-band concurrent technology
  • Connect multiple devices effortlessly with four 1Gbps Gigabit Ethernet ports
  • Simplify setup and manage your network securely using the SURFboard Central App

Powerful 24 downstream x 8 upstream channels for high-speed cable internet. User-friendly app for quick activation, monitoring, and parental controls. Four Gigabit ports enable ultra-fast wired connections for demanding devices.

DOCSIS 3.0 only, not ideal for gigabit+ plans requiring DOCSIS 3.1. Incompatible with fiber, DSL, satellite, or non-cable ISPs. No support for cable digital voice service.

ARRIS SURFboard G34 DOCSIS 3.1 Gigabit Cable Modem WiFi 6 Router (AX3000) - Xfinity Cox Spectrum Approved, Up to 1Gbps Speeds

The ARRIS G34 is a DOCSIS 3.1 cable modem router combo with built-in WiFi 6 AX3000 delivering up to 1 Gbps speeds and four 1 Gbps Ethernet ports. It's perfect for Xfinity, Cox, or Spectrum users wanting to ditch rental fees for seamless streaming, gaming, and multi-device connectivity.

  • Eliminate monthly rental fees and own your high-performance modem router
  • Ultra-fast DOCSIS 3.1 speeds up to 1 Gbps for lag-free gaming and 4K streaming
  • WiFi 6 AX3000 dual-band coverage blankets your home in reliable wireless performance
  • Four 1 Gbps Ethernet ports for wired connections to PCs, TVs, and consoles
  • Easy plug-and-play setup via SURFboard Central App with provider activation

Combines modem and router to save space and simplify management. DOCSIS 3.1 reduces latency for gaming and video calls. WiFi 6 improves efficiency for multiple connected devices.

Limited to cable internet; not for fiber, DSL, or satellite. Ethernet ports capped at 1 Gbps, no multi-gig support. Requires separate provider activation process.

ARRIS SURFboard S34 DOCSIS 3.1 Multi-Gig Cable Modem: 2.5G + 1G Ethernet, Xfinity Cox Spectrum, Up to 2.5Gbps + Next-Gen Upstream

The ARRIS SURFboard S34 is a DOCSIS 3.1 cable modem with 2.5Gbps and 1Gbps Ethernet ports for multi-gig plans up to 2.5Gbps from Xfinity, Cox, and Spectrum. Its support for next-gen upstream speeds and easy app-based setup make it perfect for users ditching rentals to future-proof high-speed home networks.

  • Unlock blazing multi-gig speeds up to 2.5Gbps for lag-free gaming, 8K streaming, and massive downloads
  • Future-proof your connection with next-gen upstream speeds from leading cable providers
  • Slash monthly rental fees by owning this reliable modem and keeping more cash in your pocket
  • Effortless setup via SURFboard Central App—plug in, activate, and connect your router in minutes
  • Dual Ethernet ports (2.5G + 1G) for wiring high-speed routers, PCs, or business setups

DOCSIS 3.1 delivers 10x faster speeds than 3.0 with enhanced security and low lag. 2.5Gbps Ethernet port supports cutting-edge multi-gig internet plans. Simple activation process saves time and frustration.

Modem only—requires a separate Wi-Fi router for wireless coverage. Compatibility varies by provider plan; always verify with your ISP. Not suitable for fiber, DSL, or satellite internet services.

ARRIS SURFboard G18 DOCSIS 3.1 WiFi 6 AX1800 Cable Modem Router Combo - Xfinity Spectrum Cox Approved Gigabit Speeds

The ARRIS SURFboard G18 is a DOCSIS 3.1 cable modem router combo with WiFi 6 AX1800 delivering gigabit download speeds and up to 100Mbps uploads. It's ideal for Xfinity, Cox, and Spectrum users seeking an all-in-one device to replace rentals and boost home networking.

  • Slash monthly rental fees by owning your high-performance modem router
  • Unlock gigabit speeds with DOCSIS 3.1 for seamless streaming and gaming
  • WiFi 6 AX1800 provides wider coverage and faster wireless for multiple devices
  • Effortless setup via SURFboard Central App in minutes
  • Boost uploads to 100Mbps for smooth video calls and file sharing

DOCSIS 3.1 technology supports next-gen gigabit plans with low lag. Built-in WiFi 6 router eliminates need for separate devices. Two 1Gbps Ethernet ports for reliable wired connections.

Only two Ethernet ports limits wired device expansion. WiFi speeds capped at 1Gbps compared to higher-end models. Lacks multi-gigabit Ethernet for ultra-fast wired needs.

ARRIS SURFboard SB6183 DOCSIS 3.0 Cable Modem - 16x4 Channels, Up to 686 Mbps, Gigabit Port for Xfinity, Cox, Spectrum

The ARRIS SURFboard SB6183 is a DOCSIS 3.0 cable modem with 16 downstream x 4 upstream channels delivering up to 686 Mbps downloads. Its reliable performance and compatibility with major providers like Xfinity, Cox, and Spectrum make it perfect for users with plans up to 400 Mbps who want to ditch rental fees.

  • Eliminate monthly rental fees and own your modem for long-term savings
  • Achieve blazing-fast downloads up to 686 Mbps for seamless streaming and gaming
  • Broad compatibility with Xfinity, Cox, Spectrum, and other major U.S. cable providers
  • Effortless setup via SURFboard Central App for quick activation
  • Gigabit Ethernet port ensures high-speed wired connections to routers

High-speed DOCSIS 3.0 with 16x4 channel bonding for reliable performance. Easy plug-and-play activation with app guidance. Works with any Wi-Fi router for flexible home networking.

No built-in Wi-Fi, requires separate router purchase. DOCSIS 3.0 limits speeds for gigabit plans; best for up to 400 Mbps. Compatibility must be verified with your specific provider.

ARRIS SURFboard SB8200 DOCSIS 3.1 Cable Modem: 2Gbps Speeds, 2x1Gbps Ports, Xfinity Cox Spectrum Compatible - Own & Save!

The ARRIS SURFboard SB8200 is a DOCSIS 3.1 cable modem with two 1Gbps Ethernet ports, supporting plans up to 2Gbps from Xfinity, Cox, and Spectrum. It's perfect for households wanting ultra-fast streaming and gaming while eliminating rental fees, but requires a separate router.

  • Unlock multi-gig speeds up to 2Gbps for lag-free gaming, 4K streaming, and rapid downloads
  • Slash monthly bills by owning your modem instead of renting from your provider
  • Seamless setup via SURFboard Central App for quick activation and connection
  • Two 1Gbps Ethernet ports enable high-speed links to routers or devices
  • Broad compatibility with Xfinity, Cox, Spectrum, and other major cable providers

Supports ultra-high cable internet speeds up to 2Gbps. Eliminates ongoing rental fees for long-term savings. Easy plug-and-play activation with app guidance.

Modem only; requires separate Wi-Fi router for wireless coverage. Not compatible with fiber, DSL, or satellite internet. Provider approval needed for full multi-gig speeds.

Upgrade your internet experience with ARRIS modems, the go-to choice for reliable, high-speed cable connectivity. This category showcases eight standout models, from pure modems like the Surfboard S34 and SB8200 to powerful modem-router combos such as the SBG7400AC2 and G34, all approved for major providers like Xfinity, Cox, and Spectrum. Whether you're tackling multi-gig plans or need WiFi 6 integration, ARRIS delivers proven performance that eliminates buffering and lag for streaming, gaming, and remote work.

Why ARRIS Stands Out in Modems

ARRIS has built a stellar reputation for engineering robust modems that handle the demands of modern cable internet. Known for their durability and ISP certifications, these devices support DOCSIS 3.0 and 3.1 standards, ensuring future-proofing against speed upgrades. What sets ARRIS apart is their focus on multi-gigabit Ethernet ports and next-gen upstream channels, ideal for households with heavy data usage. As part of our expansive Networking Products selection, ARRIS modems offer better value through 2-year warranties on many models and seamless activation.

Key Features to Consider When Buying an ARRIS Modem

Selecting the right model depends on your internet plan, household size, and whether you want a modem-only or combo unit. Here's what to prioritize:

  • DOCSIS Version: DOCSIS 3.1 models (S34, SB8200, G20, G18, G34) handle up to 2.5Gbps downloads and enhanced uploads, perfect for gigabit+ plans. DOCSIS 3.0 options like SB6183 and CM820A suit plans up to 1Gbps.
  • Ports and Speeds: Look for 2.5Gbps + 1Gbps Ethernet on premium units like S34 for direct high-speed connections. Combos add WiFi 6 (AX1800 to AX3000) for wireless coverage.
  • Modem vs. Combo: Pure modems pair with your existing router for customization; combos simplify setup with built-in WiFi.
  • ISP Compatibility: All are optimized for Xfinity, Cox, Spectrum—always verify with your provider.

Backed by ARRIS's quality construction, these modems reduce heat issues common in competitors and provide stable signals even during peak hours.

Comparing Top ARRIS Models

Navigate the lineup by need. For pure modem power, the Surfboard S34 shines with 2.5Gbps + 1Gbps ports for plans up to 2.5Gbps, outpacing the SB8200's dual 1Gbps setup for 2Gbps plans. Budget-friendly DOCSIS 3.0 picks like SB6183 (16x4 channels, 1Gbps port) or CM820A offer easy activation for moderate speeds.

Modem-router combos cater to all-in-one setups. The G34 and G20 deliver AX3000 WiFi 6 with 1Gbps max speeds and multi-gig support, ideal for larger homes—the G34 edges out with broader approvals. Step down to G18 (AX1800) for smaller spaces or SBG7400AC2 (DOCSIS 3.0, AC2350 WiFi) for reliable 960Mbps performance with four 1Gbps ports.

Choose S34 or SB8200 if you have a high-end router; opt for G-series combos to consolidate gear. If exploring alternatives, check NETGEAR Modems or Motorola Modems for different features.

Common Use Cases for ARRIS Modems

Stream 4K on multiple devices? The SB8200 or S34 prevents bottlenecks. Gamers benefit from low-latency G20 combos with WiFi 6. Remote workers appreciate the stable upstream on multi-gig models for video calls. These fit within our Modems category and broader Computers & Accessories, making setup straightforward for apartments to large homes. For refurbished options, browse Amazon Renewed Modems.

Frequently Asked Questions

Which ARRIS modem is best for Xfinity gigabit plans?

The Surfboard S34 or G34 combo supports multi-gig speeds with DOCSIS 3.1 and next-gen upstream, ensuring full plan utilization. Confirm compatibility via Xfinity's approved list.

What's the difference between ARRIS modems and combos?

Modems like SB8200 connect to your router for flexibility; combos like G20 integrate WiFi, simplifying networks but limiting router upgrades.

How does ARRIS compare to other brands?

ARRIS excels in ISP approvals and multi-gig ports versus NETGEAR or TP-Link, with superior build quality and warranties for cable users.

What warranty does ARRIS offer?

Most models, including SB6183, come with a 2-year warranty, plus responsive customer support for activation and troubleshooting.

Do I need a router with these modems?

Yes for modem-only models (S34, SB8200); no for combos (G34, SBG7400AC2) which include WiFi.