Upgrade your home internet with the best Comcast Xfinity-compatible modems, delivering faster speeds, reliable connections, and lower rental fees. Whether you need a high-performance DOCSIS 3.1 modem for gigabit speeds or a budget-friendly option for everyday browsing, these top picks ensure seamless streaming, gaming, and work-from-home efficiency.
| Top Picks | BUYING LINK |
|---|---|
| 1. Motorola MB8611 Cable Modem | Check Today’s Price on Amazon |
| 2. NETGEAR Cable Modem C6250 | Check Today’s Price on Amazon |
| 3. ARRIS (SB8200) – Cable Modem | Check Today’s Price on Amazon |
| 4. Motorola MG7700 Modem | Check Today’s Price on Amazon |
| 5. NETGEAR Nighthawk (CM2050V) | Check Today’s Price on Amazon |
| 6. ARRIS (SBG10) – Cable Modem | Check Today’s Price on Amazon |
| 7. ARRIS (G36) – Cable Modem | Check Today’s Price on Amazon |
1. Motorola MB8611 DOCSIS 3.1 Multi-Gig Cable Modem
The Motorola MB8611 is a high-performance DOCSIS 3.1 cable modem designed for ultra-fast internet speeds, making it an excellent choice for Comcast Xfinity, Cox, and Spectrum users. With a 2.5 Gbps Ethernet port, it supports gigabit and multi-gig internet plans, ensuring smooth streaming, gaming, and remote work without buffering or lag.
Key Features:
- DOCSIS 3.1 technology for future-proofed gigabit-plus speeds
- 2.5 Gbps Ethernet port for high-speed wired connections
- Active Queue Management (AQM) to reduce latency for smoother gaming and video calls
- Compatible with any WiFi router (no built-in WiFi or phone support)
- Significant cost savings by eliminating modem rental fees
Pros:
✔ Supports ultra-fast speeds up to 2,500 Mbps
✔ Works with major ISPs like Xfinity, Cox, and Spectrum
✔ Reduces latency for better gaming and streaming performance
✔ Saves up to $168/year on rental fees
✔ Reliable build quality with a 2-year warranty
Cons:
✖ No built-in WiFi – requires a separate router
✖ Not compatible with fiber or DSL services
2. NETGEAR Cable Modem Router Combo C6250
The NETGEAR C6250 is a reliable 2-in-1 cable modem and WiFi router designed for households with internet speeds up to 300 Mbps. Compatible with major cable providers like Xfinity, Spectrum, and Cox, it delivers AC1600 dual-band WiFi, covering up to 1,500 sq. ft. and supporting up to 25 devices. With built-in security features and cost savings on rental fees, it’s a great choice for budget-conscious users.
Key Features:
- DOCSIS 3.0 technology with 16×4 channel bonding for stable connections
- AC1600 dual-band WiFi for speeds up to 1,600 Mbps
- Supports cable plans up to 300 Mbps (varies by provider)
- 2 Gigabit Ethernet ports & 1 USB port for fast wired connections
- Parental controls & WPA/WPA2 security for safe browsing
Pros:
✔ All-in-one modem + router eliminates extra equipment
✔ Saves up to $168/year in rental fees
✔ Decent WiFi coverage for small to medium homes (up to 1,500 sq. ft.)
✔ Easy setup with major cable providers
Cons:
✖ Not suitable for high-speed (gigabit) internet plans
✖ Lacks advanced features like MU-MIMO and WiFi 6
3. ARRIS (SB8200) – Cable Modem – Fast DOCSIS 3.1 32×8 Gigabit Cable Modem
The ARRIS SURFboard SB8200 is a high-speed DOCSIS 3.1 modem designed for ultra-fast internet plans up to 1 Gbps, making it a great choice for Xfinity, Cox, and Spectrum users. With two Gigabit Ethernet ports and support for 4 OFDM channels, it ensures low-latency gaming, seamless streaming, and reliable connectivity for modern households.
Key Features:
- DOCSIS 3.1 technology – 10x faster than DOCSIS 3.0
- Supports internet plans up to 1 Gbps (varies by provider)
- 2 Gigabit Ethernet ports for wired connections
- Compatible with major ISPs like Xfinity, Cox, and Spectrum
- SURFboard Central App for easy setup and activation
Pros:
✔ Ultra-fast speeds for gigabit internet plans
✔ Reliable and future-proof with DOCSIS 3.1 support
✔ Saves up to $168/year on rental fees
✔ Low-latency performance for gaming and streaming
✔ 2-year warranty & dedicated customer support
Cons:
✖ No built-in WiFi – requires a separate router
✖ Lacks multi-gig Ethernet ports for speeds beyond 1 Gbps
4. Motorola MG7700 Modem WiFi Router Combo with Power Boost
The Motorola MG7700 is a high-performance modem-router combo designed for cable internet plans up to 800 Mbps. Featuring 24×8 DOCSIS 3.0 technology, an AC1900 dual-band WiFi router, and Power Boost amplifiers, this device delivers fast speeds, extended wireless range, and reliable security for homes and small offices.
Key Features:
- 24×8 DOCSIS 3.0 modem with speeds up to 1000 Mbps
- AC1900 dual-band WiFi router (2.4GHz & 5GHz)
- 4 Gigabit Ethernet ports for wired connections
- Power Boost WiFi amplifiers for enhanced range and speed
- Broadcom chipset for security against DoS attacks
- Saves up to $156/year on modem rental fees
Pros:
✔ Fast and reliable performance for cable plans up to 800 Mbps
✔ Integrated WiFi router eliminates need for a separate device
✔ Boosted wireless range with Power Boost and AnyBeam technology
✔ Multiple Ethernet ports for wired connectivity
✔ Certified for major ISPs like Xfinity, Cox, and Spectrum
Cons:
✖ Not compatible with fiber, DSL, or satellite services
✖ Lacks DOCSIS 3.1 support for future-proofing
5. NETGEAR Nighthawk Multi-Gig Cable Modem for Xfinity Voice (CM2050V)
The NETGEAR Nighthawk CM2050V is a high-speed DOCSIS 3.1 cable modem designed for Xfinity Voice subscribers. Supporting cable internet plans up to 2.5Gbps, this modem provides lightning-fast connectivity, two phone lines with advanced calling features, and multi-gig Ethernet speeds. It pairs seamlessly with any WiFi router for whole-home coverage.
Key Features:
- DOCSIS 3.1 technology for ultra-fast and reliable performance
- Supports Xfinity Voice with up to 2 phone lines and features like caller ID, call forwarding, and 3-way calling
- 2.5 Gigabit Ethernet port for true multi-gig speeds
- Works with any WiFi router for flexible wireless connectivity
- Saves up to $168/year on modem rental fees
- 32×8 channel bonding and OFDM(A) 2×2 for stable high-speed connections
Pros:
✔ Blazing-fast speeds for plans up to 2.5Gbps
✔ Xfinity Voice support with enhanced calling features
✔ Multi-gig Ethernet port for high-speed wired connections
✔ Future-proof with DOCSIS 3.1 technology
✔ Compatible with all WiFi routers for flexible setup
Cons:
✖ Only works with Xfinity; not compatible with Verizon, AT&T, or fiber internet
✖ Lacks built-in WiFi (requires a separate router)
6. ARRIS (SBG10) – Cable Modem Router Combo
The ARRIS SURFboard SBG10 is a 2-in-1 cable modem and Wi-Fi router designed for fast and reliable home connectivity. With DOCSIS 3.0 technology, AC1600 dual-band Wi-Fi, and support for internet plans up to 400 Mbps, this device ensures smooth streaming, gaming, and browsing. Compatible with Comcast Xfinity, Cox, and Spectrum, it eliminates monthly modem rental fees, saving you money.
Key Features:
- DOCSIS 3.0 modem with 16×4 channel bonding for stable high-speed internet
- AC1600 dual-band Wi-Fi (2.4GHz & 5GHz) for fast and reliable wireless connections
- Built-in Gigabit Ethernet port for wired devices
- SURFboard Central App for easy setup, parental controls, and network monitoring
- Compatible with major ISPs like Xfinity, Cox, and Spectrum
- Saves up to $168/year on rental fees
Pros:
✔ All-in-one modem and router for easy setup
✔ Dual-band Wi-Fi ensures stable wireless performance
✔ Cost-effective with no monthly rental fees
✔ Parental controls and real-time network monitoring via the SURFboard app
✔ Compact and space-saving design
Cons:
✖ Limited to 400 Mbps internet plans (not ideal for gigabit speeds)
✖ Lacks advanced Wi-Fi features like MU-MIMO or Wi-Fi 6
7. ARRIS (G36) – Cable Modem Router Combo
The ARRIS SURFboard G36 is a high-performance cable modem and Wi-Fi 6 router combo, delivering multi-gig speeds and extended coverage. With DOCSIS 3.1 technology, AX3000 dual-band Wi-Fi, and support for internet plans up to 2.5 Gbps, it ensures smooth gaming, streaming, and browsing. Compatible with Comcast Xfinity, Cox, and Spectrum, this device eliminates rental fees, saving up to $168 per year.
Key Features:
- DOCSIS 3.1 modem with 4 OFDM channels for faster and more reliable internet
- Wi-Fi 6 (AX3000) technology for enhanced speed, coverage, and device capacity
- Supports up to 2.5 Gbps speeds, ideal for Gigabit internet plans
- 4 Gigabit Ethernet ports for high-speed wired connections
- Up to 2,500 sq. ft. Wi-Fi coverage, perfect for medium to large homes
- SURFboard Central App for easy setup, parental controls, and network management
- Saves up to $168/year by eliminating modem rental fees
Pros:
✔ Future-proof DOCSIS 3.1 technology for multi-gig speeds
✔ Wi-Fi 6 for improved range, speed, and device connectivity
✔ Supports high-speed Gigabit internet plans up to 2.5 Gbps
✔ Easy setup and network management via the SURFboard app
✔ Ideal for streaming, gaming, and smart home devices
Cons:
✖ Higher price compared to entry-level modem-router combos
✖ Not compatible with DSL, fiber, or satellite internet providers
Conclusion
Choosing the best Comcast Xfinity modem depends on your internet speed requirements, budget, and connectivity needs. High-performance options like the ARRIS SURFboard G36 and NETGEAR Nighthawk CM2050V offer multi-gig speeds, advanced DOCSIS 3.1 technology, and future-proof performance. For a budget-friendly yet reliable choice, models like the ARRIS SBG10 or Motorola MG7700 provide solid performance and built-in Wi-Fi. Owning your modem not only ensures better performance and security but also eliminates costly rental fees, saving you up to $168 per year. Whether you’re a casual user, avid streamer, or serious gamer, there’s a modem-router combo tailored to enhance your Xfinity experience.