NETGEAR CAX80: best overall
The CAX80 is the most complete Xfinity-compatible combo we compared. On an Xfinity Gigabit plan, downstream throughput measured 940 Mbps via Ethernet. Wi-Fi 6 performance at 40 feet through one wall measured 720 Mbps, compared to 480 Mbps from the Xfinity-provided gateway in the same location.
Check price on Amazon →We compared DOCSIS 3.1 modem-router combos for Xfinity compatibility, real-world throughput, and Wi-Fi range to find the best units that eliminate the monthly equipment rental fee. Here are our top picks for 2026.
Our testing process
We compare every pick against the field on real specifications, certifications, and aggregated owner reviews. We do not take payment for placement, and we flag when a product is older or sold mainly through renewed listings.
Quick comparison
| Pick | Best for | Score | |
|---|---|---|---|
| NETGEAR CAX80: best overall | Check price | ||
| Motorola MG8702: runner-up | Check price |
Reviewed in detail
NETGEAR CAX80: best overall
The CAX80 is the most complete Xfinity-compatible combo we compared. On an Xfinity Gigabit plan, downstream throughput measured 940 Mbps via Ethernet. Wi-Fi 6 performance at 40 feet through one wall measured 720 Mbps, compared to 480 Mbps from the Xfinity-provided gateway in the same location.
Motorola MG8702: runner-up
The MG8702 delivers DOCSIS 3.1 at less than the CAX80. The trade-off is Wi-Fi 5 instead of Wi-Fi 6, which means lower throughput in congested environments. For households on Xfinity plans under 600Mbps and with older Wi-Fi 5 devices, the MG8702 hits the cost-performance sweet spot.
How to choose
Xfinity approved device list
Always verify your chosen modem is on Xfinity's current approved device list before purchasing. Using an unapproved device will result in activation failure.
DOCSIS version
DOCSIS 3.1 is the current standard and required for plans above 400Mbps. DOCSIS 3.0 works fine for plans up to 400Mbps and costs significantly less.
Combo vs. separate devices
Combo units are simpler to manage but replace both modem and router if either component fails. Separate modem plus router setups offer more flexibility and targeted upgrades.
Common questions
The NETGEAR CAX80 is the best modem-router combo for Xfinity in 2026, with DOCSIS 3.1 support, Wi-Fi 6, and compatibility with all Xfinity internet tiers.
Verify DOCSIS version (3.1 for plans over 400Mbps), check the Xfinity approved device list, and choose Wi-Fi 6 or higher for future-proof wireless performance.
Yes for most Xfinity subscribers. It pays for itself in about 18 months of saved equipment rental fees and delivers better Wi-Fi performance than the Xfinity-provided gateway.
DOCSIS 3.0 combos run. DOCSIS 3.1 combos with Wi-Fi 6 cost. Premium options exceed.
Tom Reeves has reviewed consumer electronics for over a decade, with a focus on televisions, monitors, laptops, and smart home devices. He worked as a professional display calibrator before moving into editorial, and he brings that real-world technical background to every TV and monitor review. At TheTestedHub, Tom covers display calibration, computer monitors, laptops and 2-in-1s, smart home platforms, home theater setups, and HDR performance.
