When buying a modem for Comcast Xfinity, you should prioritize technology to ensure compatibility with modern high-speed tiers and future-proof your setup. The "best" choice depends on your specific Xfinity plan and whether you also need phone service (Xfinity Voice). Top Recommended Modems for Xfinity (2026)
Built for extreme performance, this modem supports up to 2.5 Gbps downloads and is optimized for the fastest possible upload speeds on Xfinity's network.
This is a "hidden gem" for those on a budget who still want multi-gig capabilities. It is one of the most affordable 2.5 Gbps modems certified for Xfinity's enhanced upload speeds. what modem to buy for comcast
: Only purchase modems listed on the Xfinity Compatible Modems List to ensure they will activate on the network.
: Xfinity's "xFi Gateway" is an all-in-one modem/router. If you buy a standalone modem, you must also buy a separate Wi-Fi router . When buying a modem for Comcast Xfinity, you
: Ensure the modem's rated speed meets or exceeds your Xfinity plan. A 1 Gbps plan requires a 2.5 Gbps Ethernet port on the modem to account for overhead and deliver full speeds.
: If you want Xfinity's new "Mid-Split" (faster upload) speeds, specifically look for modems labeled as "Next Gen Speed Tier" compatible, such as the ARRIS S34 or Hitron CODA56. This is a "hidden gem" for those on
Expert reviews from Tom's Guide name this the top pick for its 2.5 Gbps Ethernet port and certification for Xfinity's "Next Gen" upload speeds. It is highly stable and future-proof for plans exceeding 1 Gbps.