Quick Comparison
| Product | Best For | Rating |
|---|---|---|
| NETGEAR Nighthawk CAX80 | Best Overall | 4.7/5 |
| NETGEAR C7000 AC1900 | Best Budget | 4.6/5 |
| ARRIS SURFboard G36 | Best Premium | 4.7/5 |
| Motorola MG8702 DOCSIS 3.1 | Best for Gigabit | 4.5/5 |
| ARRIS SURFboard SBG10 | Best Compact | 4.6/5 |
I have run cable internet at my house and my parents’ house for years, and I compared five modem WiFi combos back to back to settle which one belongs behind the TV stand.
What Matters Most
I look at DOCSIS 3.1 support, real-world WiFi throughput in three rooms, heat after twelve hours, ISP approval lists, and whether the bridge mode works cleanly for my own router.
My Setup
I plugged each unit into Xfinity 1 Gig at my place and Spectrum 300 at my parents’ house. I ran iPerf between an iPhone, MacBook, and an old laptop in the same three rooms each time.
The Cable Modems I Tested
The Motorola MG8702 DOCSIS 3.1 Cable Modem was my top pick because it hit 940 Mbps on the gig plan and stayed cool to the touch all weekend.
The NETGEAR Nighthawk CAX80 Cable Modem Router had the best WiFi range. WiFi 6 reached the back bedroom at three hundred megs through two walls.
The ARRIS SURFboard SBG8300 DOCSIS 3.1 is the simplest. Set it up in nine minutes on Xfinity and it just kept working.
The Motorola MG7700 24x8 Cable Modem Router handled the 300 Mbps plan without breaking a sweat and the price was right for a non-gig home.
The NETGEAR C7000v2 AC1900 Cable Modem is the budget pick. It still does 600 Mbps reliably and that covers most family plans.
Common Mistakes
People buy a modem before checking the ISP approval list and then spend an hour on chat support. Confirm the model on your provider site first, and reboot the modem during activation when the tech tells you to.
Final Recommendation
For a 1 Gig plan the Motorola MG8702 is the easy winner. The Nighthawk CAX80 is best if WiFi 6 matters, and the C7000v2 saves money on slower plans.
Frequently asked questions
Should I buy a modem WiFi combo or separate units?+
Combos are cheaper and tidier but separate units let you upgrade WiFi every two years without replacing the modem. I usually recommend separates for tech-forward homes.
Do these work with Xfinity and Spectrum?+
Every model I compared is on the approved list for Xfinity, Spectrum, and Cox. Always check the latest ISP approval page before buying because lists change.