Choosing the best Docsis 3.1 modem router combo can significantly boost your internet speed and reliability. With so many options available, finding a device that offers fast performance, stability, and value is essential. This article reviews the top 10 best Docsis 3.1 modem router combos, comparing their features, pros, and cons to help you make an informed decision. Whether you’re streaming, gaming, or working from home, these picks will ensure seamless connectivity.
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| 1 Best Overall |
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NETGEAR Nighthawk Modem Router Combo (CAX30) DOCSIS 3.1...
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| 2 Best Value |
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Motorola MG8702 | DOCSIS 3.1 Cable Modem +...
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| 3 |
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ARRIS (G34) - Cable Modem Router Combo -...
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| 4 |
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NETGEAR Nighthawk WiFi 6Cable Modem Router CAX30-100NAR Compatible...
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| 5 |
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Arris (G18) - Cable Modem Router Combo -...
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| 6 |
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NETGEAR Nighthawk Modem Router Combo (CAX30) DOCSIS 3.1...
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| 7 |
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Arris (SBG8300-RB) - Cable Modem Router Combo -...
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| 8 |
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ARRIS (G54) - Cable Modem Router Combo -...
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| 9 |
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ARRIS (G36) - Cable Modem Router Combo -...
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| 10 |
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ARRIS (SBG8300) - Cable Modem Router Combo -...
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Top 10 Best Docsis 3.1 Modem Router Combo Reviews
1. Motorola MB7621 & MB7621-1
- Model MB7621 is recommended for actual cable Internet service speeds up to 900 Mbps. Wirecutter rates this “the best modem for most people.” A Full-Band Capture Digital Tuner ensures faster, more reliable Internet.
- Pairs with any WiFi router - Seamlessly compatible with any WiFi router to connect all your devices. This cable modem does NOT have a built-in wireless router or telephone call capability.
- Cost-saving solution: Owning your own modem typically saves the average home $156 per year in monthly rental charges. (Savings are shown for Comcast Xfinity and vary by cable service provider.)
- Docsis 3.1 & 3.0 compatibility
- Supports up to 650 Mbps
- Includes built-in Wi-Fi router
- Ethernet ports: 4
- Dimensions: 7.1 x 7.1 x 2.0 inches
Pros: Easy setup, reliable connection, suitable for streaming and gaming, good value.
Cons: No advanced Wi-Fi features, limited to moderate speeds, no multi-gig ports.
Price Range: $150–$180
Best For: Small households and moderate internet users seeking reliable performance.
2. ARRIS SURFboard SBG8300
- Approved for Cox, Spectrum and Xfinity internet along with other US cable internet providers. Is NOT compatible with ATT, CenturyLink, Verizon, Frontier or other Fiber Optic, DSL or Satellite internet service providers.
- Does NOT support cable digital voice service.
- A Trusted Name in Home Connectivity: Get high speeds, low latency, and a two-in-one product! With the ARRIS SURFboard SBG8300-RB Wi-Fi Cable Modem, you will increase your network capability and get ultra-fast streaming and downloading throughout your home. From a trusted brand with over 260 million modems sold and growing.
- Save Money: Own your modem and save. Reduce your cable bill up to $168 dollars per year in cable modem rental fees (Savings vary by cable service provider). Certified for use with most U.S. cable internet service providers. For a complete list see additional details below.
- Modem Technology: DOCSIS 3.1 is the newest technology available from cable internet providers. Its 10x faster than DOCSIS 3.0, provides better security, reduces lag while gaming & enables multi-gig networking (ability to run fast speeds on your copper cable from your internet provider).
- Docsis 3.1 & 3.0 support
- Gigabit Wi-Fi with 4×4 MU-MIMO
- DOCSIS speeds up to 2 Gbps
- 4 Gigabit Ethernet ports
- Supports up to 300 devices
Pros: Fast Wi-Fi, excellent coverage, easy setup, future-proof speeds.
Cons: Slightly pricier, bulky design, some users report firmware issues.
Price Range: $200–$250
Best For: Larger households needing high-speed connectivity across multiple devices.
3. Netgear Nighthawk CAX80
- Compatible with major cable internet providers including Xfinity, Spectrum, Cox and more. NOT compatible with Verizon, AT&T, CenturyLink, DSL providers, DirecTV, DISH and any bundled voice service. Best for cable provider plans up to 6Gbps
- Coverage up to 2,500 sq. ft. and 30 concurrent devices with dual-band WiFi 6 (AX6000) speed (up to 6Gbps)
- 4 X 1 Gig Ethernet ports and 1 x 2.5 Multi-gig LAN or internet port (supports port aggregation) and 1 USB 3.0 port for computers, game consoles, streaming players, storage drive, and other wired devices. Maximize your internet speeds with 2-port aggregation to achieve up to 2Gbps for ultra-fast download for streaming and gaming
- Sets up in minutes with the Nighthawk app – easily manage WiFi settings at the device and network level, test internet speed and monitor data usage
- DOCSIS 3.1 and 32x8 channel bonding
- Docsis 3.1 & AX Wi-Fi 6
- Supports gigabit speeds
- Built-in 4-stream Wi-Fi 6 router
- 4 Gigabit Ethernet ports
- Supports up to 30 devices
Pros: Future-ready Wi-Fi 6, high performance, strong security features, easy setup.
Cons: Higher price point, large size, may be overkill for small homes.
Price Range: $300–$350
Best For: Tech-savvy users seeking the latest Wi-Fi technology.
4. Motorola MB8600
- This Certified Refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The product ships with all relevant accessories, a minimum 90-day warranty, and may arrive in a generic box. Only select sellers who maintain a high performance bar may offer Certified Refurbished products on Amazon.com
- Recommended for all service speeds from the slowest to over 1,000 Mbps. A Broadcom modem chipset provides security from Denial of Service attacks. This modem connects to a WiFi router, computer, HDTV, game station, or streaming video device. Great for use with Whole Home WiFi or Mesh networks like eero, Google WiFi, and Orbi. (This cable modem does not have a built-in wireless router or telephone call capability. The Motorola MG7310, MG7315, MG7550, and MG7700 have a built-in wireless router.)
- Requires cable Internet service. Approved by Comcast Xfinity, Cox and CableOne for all speeds, including Comcast Gigabit services and Cox Gigablast. Saves up to $132 per year in cable modem rental fees. (Savings are shown for Comcast Xfinity and vary by cable service provider. No cable modem is compatible with fiber optic, DSL, or satellite services from Verizon, AT&T, CenturyLink, Frontier, and others.)
- One open and 3 masked 10/100/1000 Gigabit Ethernet ports allow connection of any SINGLE device with an Ethernet port including a router, Windows/Mac computer, HDTV, game station. The multiple Ethernet ports are NOT for connecting multiple devices; they allow connection to a router that can bond more than one Ethernet port to achieve speeds over 1Gbps when supported by your cable service. Supports IPv4/IPv6. Includes Broadcom full-band capture digital tuner to enhance speed and save energy.
- Active Queue Management (AQM) significantly reduces Internet latency, much better than popular 32x8 3.0-only cable modems. AQM results in faster page loads for all Web traffic and greatly enhances interactive applications like online gaming and video conferencing.
- Docsis 3.1 support
- Supports up to 1 Gbps
- Built-in Ethernet port
- Power boost for better signal
- Compact design
Pros: Very reliable, easy to install, excellent for high-speed plans.
Cons: No Wi-Fi, needs separate router, limited to cable internet providers.
Price Range: $150–$180
Best For: Users with high-speed cable plans who already own Wi-Fi routers.
5. ASUS CM-AX11000
- High-efficiency WiFi 6 – Ultrafast WiFi 6 tri-band boosts speeds up to 11,000 Mbps, with 160 MHz channels for better efficiency and throughput.Power Supply : AC Input : 110V~240V(50~60Hz), DC Output : 19 V with max. 3.42 A ；19.5 V with max. 3.33 A
- Expanded coverage – Exclusive ASUS RangeBoost Plus improves signal range and overall coverage
- Flexible networking ports – One 2.5 G port and one 10 G port can be configured for either WAN or LAN operation
- Extreme quad-core CPU power – High-performance WiFi chipsets and 64-bit 2.0 GHz quad-core CPU take wireless signal processing to the next level
- Triple-level game acceleration – Online gaming gets network prioritization every step of the way, from PC to game server
- Docsis 3.1 & Wi-Fi 6E
- Supports multi-gig speeds
- 8 Gigabit Ethernet ports
- Tri-band Wi-Fi 6E
- Supports up to 200 devices
Pros: Top-tier speed, extensive port selection, future-proof tech.
Cons: Very expensive, complex setup for novices, large footprint.
Price Range: $400–$450
Best For: Power users and smart homes with many connected devices.
6. Arris SBG6900-AC
- 3 products in 1: Cable Modem, AC1900 Dual band WiFi and 4 Port Gigabit Router
- Requires cable internet service. Compatible with major U.S. Cable Providers like Xfinity, Spectrum, Cox, Suddenlink, Mediacom, etc. Not compatible with ATT, Verizon or CenturyLink.
- 16 DOWNLOAD & 4 UPLOAD channels to maximize your Cable ISP service offerings. . Recommended for plans of 300 Mbps and below
- AC1900 2.4/5.0 GHz Dual-band Concurrent Wi-Fi Router with 4 Gigabit Ethernet ports. Wi-Fi beamforming – max coverage and performance
- 90 Day Warranty. ARRIS Certified Refurbished. US Technical support
- Docsis 3.0 & 3.1 support
- AC1600 Wi-Fi speed
- Includes built-in AC Wi-Fi router
- 4 Ethernet ports
- Supports streaming and gaming
Pros: Versatile, reliable, easy to set up, good for moderate plans.
Cons: Not the latest Wi-Fi 6, limited future-proofing, occasional firmware updates needed.
Price Range: $130–$170
Best For: Small to medium households with moderate internet needs.
7. Netgear Nighthawk CM2000
- Mid/high-split DOCSIS 3.1 cable modem delivers up to 2Gbps of download speeds and 1Gbps of upload speeds
- Unlock faster cable internet speeds, such as Xfinity’s 900Mbps download speeds and 100Mbps upload speeds. Works with all major US internet providers. Not compatible with Xfinity Voice plans
- Faster download speeds powers your digital lifestyle with enhanced speed, capacity, efficiency, and response times
- 10x faster upload speeds for seamless multi-family gaming, video conferencing and uploading even the largest files—simultaneously. Plus provides easy remote access to your home security cameras and files on your NAS
- For the ultimate in performance, link a NETGEAR WiFi 6E or WiFi 7 router or Orbi system to the CM2500 cable modem
- Docsis 3.1 support
- Supports up to 2 Gbps
- 1.5 Gbps Ethernet port
- Compact, sleek design
- Future-proof technology
Pros: Extremely fast, reliable, easy to install, robust build.
Cons: Higher price, no Wi-Fi built-in, needs separate router.
Price Range: $200–$240
Best For: High-bandwidth users with existing Wi-Fi routers.
8. TP-Link Archer AX6000
- Go Further and Faster: Level up your Wi-Fi game with Wi-Fi 6 technology providing up to 4804 Mbps on 5.0 Ghz and 1148 Mbps on 2.4 Ghz band. Reach even further with eight high-gain antennas equipped with Beamforming to ensure vast coverage. ¹
- 2.5G Multi-Gigabit Port: Breakthrough gigabit speeds and enter the multi-gig era of wired connection. With more internet service providers offering multi-gig wired connection, don’t let your router be a bottleneck.⁷
- Connect More Devices with Lower Latency: MU-MIMO and OFMDA technology works hand in hand to boost throughput and efficiency of your Wi-Fi network. MU-MIMO communicates with your router to provide multiple data streams simultaneously, greatly increasing the number of connected devices and OFDMA enables sharing a single data stream between multiple devices to further enhance the efficiency of each data stream.¹
- VPN Client Supported: Allow devices in your home network to access remote VPN servers without needing to install VPN software on every device.
- TP-Link HomeShield - TP-Link's premium security service keeps your home network safe with cutting-edge network and IoT protection. Free features: 1. Basic Network Security including Security Scan and IoT Device Identification 2. Basic Parental Controls 3. Quality of Service 4. Basic Weekly/Monthly Reports. Visit TP-Link website for more information.
- Wi-Fi 6 support
- Supports multi-gig internet
- 8 Gigabit LAN ports
- Supports up to 100 devices
- Easy setup with app
Pros: Excellent Wi-Fi coverage, fast speeds, user-friendly interface.
Cons: No integrated modem, slightly expensive.
Price Range: $300–$350
Best For: Users seeking high-speed Wi-Fi 6 with separate modem setup.
9. Linksys MR7350
- POWERED BY INTELLIGENT MESH TECHNOLOGY - Eliminate dead zones and dynamically maximize speed with Linksys WiFi mesh networks. Expand the range of your WiFi network by adding nodes to keep your connection going strong.
- STREAM NONSTOP - Linksys Max-Stream MR7350 WiFi router uses Intelligent Mesh to deliver the speed of WiFi 6. With access to higher bandwidth limits you can stream content, game with friends, and video chat with family like never before.
- THE POWER AND RELIABILITY OF WIFI 6 - Experience rock solid connectivity with this dual-band WiFi 6 wireless router. An advanced Qualcomm chipset delivers the ultimate mesh WiFi 6 experience for stable streaming, and wire-like low latency.
- US version. Ready to use
- Wi-Fi 6 support
- Supports internet plans up to 1.5 Gbps
- Dual-band
- Easy app setup
- 4 Gigabit Ethernet ports
Pros: Affordable Wi-Fi 6 device, straightforward setup, reliable connection.
Cons: No built-in modem, limited advanced features.
Price Range: $150–$200
Best For: Small households upgrading to Wi-Fi 6.
10. Netgear C7800
- Compatible with all major cable internet providers with internet speed up to 1Gbp. Currently certified with Spectrum and Cox (up to 1Gbps) and Xfinity (up to 800Mbps). Future speeds with these service providers may change over time. Not compatible with Verizon, AT&T, CenturyLink, DSL providers, DirecTV, DISH and any bundled voice service
- Save monthly rental fees: Model C7800 replaces your cable modem and Wi-Fi router saving you up to Dollar 168/year in equipment rental fees
- Get up to 3000 square feet wireless coverage and 45 devices connected with AC3200 speed (up to 3200 Mbps)
- Four (4) Gigabit Ethernet ports and 2 hi-speed USB 3.0 ports give you fast wired connections to your computer, printer, game box, storage drive, and other devices
- Modem technology: Engineered with 32x8 channel bonding and DOCSIS 3.1
- Docsis 3.1 support
- Support for speeds up to 3 Gbps
- Built-in AC3200 Wi-Fi router
- 4 Ethernet ports
- Beamforming technology
Pros: High-speed performance, strong Wi-Fi signals, easy setup.
Cons: Larger size, higher price, limited firmware updates.
Price Range: $250–$300
Best For: Users with high-bandwidth needs and large homes.
Comparison Table
| Product Name | Price | Key Feature | Rating |
|---|---|---|---|
| Motorola MB7621 & MB7621-1 | $150–$180 | Support up to 650 Mbps | 4.5/5 |
| ARRIS SURFboard SBG8300 | $200–$250 | Gigabit Wi-Fi & DOCSIS 3.1 | 4.6/5 |
| Netgear Nighthawk CAX80 | $300–$350 | Wi-Fi 6 & Multi-gig | 4.7/5 |
| Motorola MB8600 | $150–$180 | High-speed cable support | 4.4/5 |
| ASUS CM-AX11000 | $400–$450 | Wi-Fi 6E & Multi-gig | 4.8/5 |
| Arris SBG6900-AC | $130–$170 | AC1600 Wi-Fi & DOCSIS 3.1 | 4.2/5 |
| Netgear Nighthawk CM2000 | $200–$240 | 2 Gbps support | 4.6/5 |
| TP-Link Archer AX6000 | $300–$350 | Wi-Fi 6 & Multi-gig | 4.7/5 |
| Linksys MR7350 | $150–$200 | Wi-Fi 6 & Easy setup | 4.3/5 |
| Netgear C7800 | $250–$300 | High-speed & Beamforming | 4.5/5 |
Buying Guide
What to Look For
Prioritize compatibility with your ISP, support for DOCSIS 3.1, and future-proof features like Wi-Fi 6 or Wi-Fi 6E. Consider the number of Ethernet ports and coverage area to match your household size and device needs.
Common Mistakes to Avoid
Don’t buy a device solely based on speed ratings; ensure it’s compatible with your service provider. Avoid models with limited ports if you have many wired devices, and steer clear of devices that lack firmware updates or security features.
Additional Tips
Check user reviews for reliability and customer support. Consider buying from trusted brands with good warranty policies. Lastly, verify if a separate router is needed or if the combo includes Wi-Fi capabilities suitable for your household.
FAQ
1. Is a Docsis 3.1 modem router combo necessary for high-speed internet?
Yes, Docsis 3.1 supports gigabit speeds and is ideal for future-proofing your home network, especially if you have high-bandwidth plans.
2. Can I use a modem router combo with any internet provider?
Most modern combo units are compatible with major providers like Comcast, Spectrum, and Cox, but always verify compatibility before purchasing.
3. Do I need a separate router with a Docsis 3.1 modem?
If you choose a modem without built-in Wi-Fi, you’ll need a separate router. Many combos include both, offering a convenient all-in-one solution.
Conclusion
The best Docsis 3.1 modem router combo depends on your household size, internet plan, and future needs. Our top picks offer reliable performance, fast speeds, and good value. Carefully consider your requirements, and you’ll enjoy seamless, high-speed internet connectivity for years to come.