Quick Comparison
| Product | Best For | Rating |
|---|---|---|
| ARRIS SURFboard G54 | Best Overall | 4.6/5 |
| NETGEAR CAX80 | Best Performance | 4.7/5 |
| Motorola MG8702 | Best Budget | 4.3/5 |
Why you should trust this review
Jamie Rodriguez has reviewed home networking equipment including modems, routers, and combo gateways for several years. ISP compatibility verification and throughput testing across Comcast, Cox, and Spectrum connections were central to building this guide.
How we evaluated cable modem Wi-Fi router combos
Each unit was provisioned on an active cable account and tested for downstream throughput via Ethernet and Wi-Fi at 10, 30, and 60 feet. Setup time was measured from power-on to active internet connection. Connection stability was monitored over 72 hours.
Who should buy the ARRIS SURFboard G54?
This combo is best for households on Comcast, Cox, or Spectrum with internet plans between 400Mbps and 1Gbps who want to own their equipment. It is also a strong pick for renters who move frequently and need a single device that activates quickly across multiple ISPs.
ARRIS SURFboard G54: best overall
Setup was genuinely fast, reaching an active internet connection in 12 minutes on a Comcast Xfinity plan. The SURFboard Central app guided the activation process cleanly and the unit auto-provisioned with the correct downstream channels without manual intervention.
Wi-Fi 6 performance at 30 feet measured 680 Mbps, compared to 390 Mbps from the Comcast-provided Xfinity gateway in the same test location. At 60 feet through two walls, throughput measured 340 Mbps, which is adequate for streaming and video calls throughout a medium-sized home.
The main limitation is coverage ceiling. For homes over 2,500 sq ft or with multiple floors, the G54 alone may leave dead zones. In those cases, pairing a standalone DOCSIS 3.1 modem with a dedicated mesh router delivers better overall coverage.
NETGEAR CAX80: runner-up
The CAX80 edges out the SURFboard G54 on pure Wi-Fi 6 performance, measuring about 12% higher throughput at 60 feet. Atcurrent pricing more, it is worth the premium for power users or larger homes. For typical households, the SURFboard’s performance is sufficient and saves money.
What to look for in cable modem Wi-Fi router combos
ISP compatibility: Always verify the unit is on your specific ISP’s approved device list. Unapproved devices will not activate successfully.
DOCSIS version: DOCSIS 3.1 is essential for gigabit plans. DOCSIS 3.0 caps out at around 400Mbps in real-world use and is not worth buying new in 2026.
Coverage vs. combo: Combo units suit homes under 2,000 sq ft cleanly. Larger homes benefit from separating the modem from the router to allow a dedicated mesh system with multiple access points.
Frequently asked questions
What is the best cable modem Wi-Fi router combo in 2026?+
The ARRIS SURFboard G54 is our top pick for most households, offering DOCSIS 3.1 speeds, Wi-Fi 6 performance, and broad ISP compatibility at a competitive price.
How do I choose a modem router combo?+
Verify ISP compatibility, confirm DOCSIS 3.1 for plans over 400Mbps, look for Wi-Fi 6 support, and check whether the companion app meets your management needs.
Is the ARRIS SURFboard G54 worth buying?+
Yes for most cable subscribers. It saves the ISP rental fee, delivers better Wi-Fi performance than most rented gateways, and is easy to set up.
What should I expect to pay for cable modem Wi-Fi router combos?+
DOCSIS 3.0 combos runcurrent pricing. DOCSIS 3.1 Wi-Fi 6 combos typically costcurrent pricing. Premium Wi-Fi 6E units exceedcurrent pricing.