2026’s Best Gigabit & Multi‑Gig Cable Modems

The typical U.S. internet experience keeps getting faster: the median fixed broadband download speed recently reached about 285 Mbps. With this rapid growth, it’s more important than ever to pair your plan with a reliable, high‑speed cable modem.

That’s where gigabit cable modems come in. The right DOCSIS 3.1 model can deliver lightning‑fast speeds, smoother streaming, and lower latency for gaming and video calls—especially if it includes a 2.5G Ethernet port for multi‑gig service.

Key Takeaways

• The ARRIS Surfboard S33 and NETGEAR Nighthawk CM2000/CM3000 class are top picks with 2.5G ports for plans above 1 Gbps.
• The ARRIS SURFboard SB8200 and Motorola MB8600 are reliable for up to 1 Gbps; the SB8200 supports link aggregation to exceed 1 Gbps with a compatible router.
• The NETGEAR Nighthawk CM2050V is the leading choice if you need Xfinity Voice (two RJ‑11 ports) alongside fast data.
• Mid/high‑split uploads (Next‑Gen) are expanding; check your provider’s list and look for explicit mid/high‑split support on the modem.

But with so many options available, how do you choose the best one for your needs? Below you’ll find the best gigabit and multi‑gig cable modems, plus a quick comparison and setup notes so you can match the right model to your provider and plan.

Best Gigabit Cable Modems

ARRIS Surfboard S33 DOCSIS 3.1 Multi-Gigabit Cable Modem (2.5 Gbps Max Internet Speeds)

The ARRIS Surfboard S33 is an excellent pick for fast plans and compatibility with major U.S. cable providers. It’s approved for Comcast Xfinity, Cox, Spectrum, and more.

With 1G and 2.5G Ethernet ports, you can tap multi‑gig service without relying on link aggregation. The S33 supports DOCSIS 3.1 with 2 downstream x 2 upstream OFDM/OFDMA channels for optimized performance. It remains compact and easy to place, and user reviews consistently highlight its stability and speed.

Best For: Users who want multi‑gig readiness via a simple 2.5G port and to save on rental fees.

Pros:

• Approved for major U.S. cable providers.
• 2.5G LAN port avoids link‑aggregation complexity for >1 Gbps plans.
• Compact, efficient design.

Cons:

• Activation can vary by ISP; follow provider‑specific steps.

ARRIS SURFboard SB8200 DOCSIS 3.1 Cable Modem (Approved for Comcast Xfinity, Cox, Charter Spectrum, and more)

For many households on gigabit plans, the SB8200 remains a strong value. It offers two 1G Ethernet ports and supports link aggregation (LACP) with a compatible router to surpass 1 Gbps combined throughput.

The brand has a long reputation for reliability, setup is straightforward, and it’s approved by leading cable ISPs. If your plan exceeds 1 Gbps and you don’t want to configure link aggregation, consider a 2.5G‑port modem instead.

Best For: Users on up to 1 Gbps plans or those comfortable enabling LACP with a compatible router.

Pros:

• Two 1G ports with LACP for >1 Gbps combined.
• Trusted, widely approved model.
• DOCSIS 3.1 performance and security.

Cons:

• Exceeding 1 Gbps requires LACP and a compatible router; many ISPs issue a single IP by default.

NETGEAR Nighthawk Cable Modem CM1200 (Black)

The CM1200 supports DOCSIS 3.1 with 32×8 channel bonding and can work with major cable ISPs. To reach the advertised 2 Gbps, you must enable WAN link aggregation on both the modem and a compatible router; note that many residential plans provide a single public IP, which limits multi‑port throughput.

Users appreciate the straightforward setup and stable performance. If you want an easier path to >1 Gbps without LAG, look for a modem with a 2.5G port instead.

Best For: Users who specifically plan to use WAN aggregation with a compatible router.

Pros:

• Wide ISP compatibility and mature firmware.
• Solid DOCSIS 3.1 performance for 1 Gbps tiers.
• Four Ethernet ports for network flexibility.

Cons:

• 2 Gbps requires WAN LAG and a router that supports it; ISP IP assignment may constrain results.

ARRIS Surfboard G34 DOCSIS 3.1 Gigabit Cable Modem & Wi‑Fi 6 Router (AX3000)

This 2‑in‑1 DOCSIS 3.1 gateway with Wi‑Fi 6 delivers up to gigabit plan speeds and simplifies setup via the SURFboard Central app. It includes four 1G Ethernet ports; for plans above 1 Gbps, consider a modem with a 2.5G LAN port.

Best For: Users who want a single device for gigabit‑class service and strong Wi‑Fi 6 coverage.

Pros:

• All‑in‑one convenience with Wi‑Fi 6.
• Easy app‑based setup.
• Approved by major U.S. cable ISPs.

Cons:

• LAN ports are 1G; not ideal for >1 Gbps tiers.

Motorola MB8600 DOCSIS 3.1 Cable Modem (Approved for Comcast Xfinity, Cox, and Charter Spectrum)

The MB8600 supports DOCSIS 3.1 and 32×8 DOCSIS 3.0 fallback. It’s a steady performer for up to 1 Gbps plans, with a 1G Ethernet port for your router. For plans exceeding 1 Gbps, look to 2.5G‑port models.

Best For: Reliable gigabit‑class connectivity with low latency and broad ISP approvals.

Pros:

• Rock‑solid DOCSIS 3.1 stability.
• Works with any Wi‑Fi router.
• Good latency characteristics with AQM.

Cons:

• No 2.5G LAN; not ideal for >1 Gbps tiers.

ARRIS SURFboard SBG10 Cable Modem & Wi‑Fi Router (Max Internet Speeds)

This DOCSIS 3.0 gateway is a convenient budget option for modest plans (generally up to a few hundred Mbps). It’s not intended for gigabit tiers; for gigabit and above, choose a DOCSIS 3.1 model from this list.

Best For: Smaller homes on sub‑gigabit plans seeking an all‑in‑one budget device.

Pros:

• Cost‑effective 2‑in‑1 for basic speeds.
• Easy app‑based setup.
• Works with major cable ISPs.

Cons:

• DOCSIS 3.0 and 1G LAN limit future upgrades; not for gigabit tiers.

ARRIS SURFboard SB6190 Cable Modem (Black)

The SB6190 is a DOCSIS 3.0 model best suited for lower‑tier plans. It’s not recommended for gigabit service or latency‑sensitive gaming compared with DOCSIS 3.1 options.

Best For: Basic plans where DOCSIS 3.0 is still allowed by your provider.

Pros:

• Simple to set up and widely available.
• Works with many cable ISPs on lower tiers.

Cons:

• Uses the Intel Puma 6 chipset, historically associated with latency/jitter issues for gaming and VoIP; not ideal for gigabit tiers.

ARRIS SURFboard SBG8300 Cable Modem & Wi‑Fi Router (Black)

A DOCSIS 3.1 gateway that can handle up to 1 Gbps plans and provide strong Wi‑Fi 5 coverage. For multi‑gig plans, a separate modem with a 2.5G port plus a modern router is the better fit.

Best For: Users who want an all‑in‑one device for gigabit plans without aiming for multi‑gig.

Pros:

• DOCSIS 3.1 with good Wi‑Fi coverage.
• Simple app‑based configuration.
• Four 1G Ethernet ports.

Cons:

• Not designed for >1 Gbps LAN throughput.

NETGEAR Nighthawk Multi‑Gig Cable Modem (CM2050V) for Xfinity Voice

If you have Xfinity Voice, this DOCSIS 3.1 modem is the go‑to pick thanks to its two RJ‑11 telephone ports and a 2.5G LAN port for fast data service. It pairs with any Wi‑Fi router and can save on gateway rentals.

Best For: Xfinity customers needing voice + multi‑gig data in one unit.

Pros:

• Supports Xfinity Voice with up to two lines.
• 2.5G LAN port for high‑speed plans.
• Works with any Wi‑Fi router.

Cons:

• Voice features are specific to Xfinity; other ISPs may not support them.

NETGEAR Nighthawk Multi‑Gig Cable Modem (CM1100)

The CM1100 is a DOCSIS 3.1 modem rated for up to 2 Gbps via WAN link aggregation with a compatible router. For most homes, a modem with a 2.5G port is simpler for plans above 1 Gbps.

Best For: Users who already own a router that supports WAN LAG and want to leverage it.

Pros:

• Stable DOCSIS 3.1 performance.
• Works with major cable ISPs.
• Easy to install and manage.

Cons:

• 2 Gbps requires WAN LAG; many residential accounts provide a single IP.

Hitron CODA DOCSIS 3.1 Modem (2X 1 Gbps Ethernet Ports)

Hitron’s latest consumer model, the CODA56, offers DOCSIS 3.1 performance with a 2.5G Ethernet port and broad approvals (Xfinity, Spectrum, Cox). It’s a strong value for fast downloads and improved uploads where mid/high‑split is available.

Best For: Users seeking a budget‑friendly 2.5G DOCSIS 3.1 modem for multi‑gig readiness.

Pros:

• 2.5G port simplifies >1 Gbps service.
• Works with leading U.S. cable ISPs.
• Easy activation and stable performance.

Cons:

• Always confirm model approval with your specific ISP and tier.

Factors to Consider When Choosing Gigabit Cable Modems

When choosing a gigabit cable modem, focus on DOCSIS 3.1, a 2.5G Ethernet port for >1 Gbps plans, explicit mid/high‑split upload support, and provider approval. Voice users should prioritize eMTA‑capable models.

Speed and performance still matter, but compatibility and port speed are what unlock your plan’s full potential.

Also consider setup simplicity, firmware support, and potential cost savings relative to your ISP’s equipment fees.

Key Features

Prioritize DOCSIS 3.1 with OFDM/OFDMA, a 2.5G LAN port (easier than link aggregation), and explicit mid/high‑split support where available. Ensure the modem appears on your ISP’s approved list.

Check downstream/upstream channel support and thermal design for stability under sustained loads.

Speed and Performance

Gigabit cable modems can exceed 1 Gbps on plans that support it. A 2.5G LAN port simplifies multi‑gig; link aggregation requires a compatible router and settings on both devices.

Mid/high‑split upgrades increase upstream capacity substantially; if uploads matter, choose a modem and tier that support these enhancements.

Compatibility With Providers

Always verify your ISP’s approved modem list. Some providers include a modem at no extra cost, and certain upload upgrades may require an ISP‑provided device.

DOCSIS cable modems work with cable ISPs (e.g., Xfinity, Spectrum, Cox). They do not work with fiber, DSL, satellite, or fixed wireless services.

Setup and Installation

Confirm compatibility first, then follow your ISP’s activation steps. If using link aggregation, enable it on both modem and router; otherwise, prefer a 2.5G port for simplicity.

Cost Savings

Potential savings vary by provider. Some ISPs include a modem at no monthly charge, while others rent gateways for a monthly fee or offer premium bundles with added benefits like unlimited data.

User Experience

Look for stable firmware, clear status LEDs, and responsive support. Prioritize modems with strong thermal performance and consistent user reviews for uptime and latency.

Recommendations for Optimization

Pair your modem with a modern router (Wi‑Fi 6/6E) and Cat6 or better cabling. Use QoS sparingly, keep firmware updated, and prefer a 2.5G modem port over WAN aggregation for multi‑gig plans.

Conclusion

For most homes in 2026, a DOCSIS 3.1 modem with a 2.5G port offers the best mix of speed and simplicity. The ARRIS Surfboard S33 and Hitron CODA56 are great all‑around picks; the SB8200 and MB8600 are excellent for up to 1 Gbps; and the NETGEAR CM2050V is best if you need Xfinity Voice.

Match the modem to your plan, verify ISP approval, and you’ll unlock the speeds you’re paying for.

Frequently Asked Questions

Should I rent my modem from the ISP instead?

• Buying often pays for itself within a year on providers that charge rental fees.
• Some ISPs include a modem at no monthly charge; others rent gateways monthly or bundle extras like unlimited data.
• Owning gives you control over features and upgrades.
• Renting can simplify replacements and major tech transitions.

If you move frequently or need ISP‑specific features (e.g., certain high‑upload tiers), renting may be simpler. Otherwise, a quality DOCSIS 3.1 modem typically saves money and boosts performance.

What is the difference between DOCSIS 3.0 and 3.1?

• DOCSIS is the cable‑internet standard.
• DOCSIS 3.0 can reach ~1 Gbps down on ideal setups but is aging out for higher tiers.
• DOCSIS 3.1 adds OFDM/OFDMA and supports multi‑gig downloads and improved uploads.
• For 2026, choose 3.1 for gigabit and above; it’s the most future‑ready path.

In short, DOCSIS 3.1 unlocks faster speeds and better latency, especially on upgraded networks.

Can I use my own modem if my provider supplies phone service?

• Yes—look for an eMTA/voice‑capable modem approved by your ISP.
• NETGEAR CM2050V supports Xfinity Voice (two RJ‑11 ports); most other models above are data‑only.
• Always confirm voice support and activation steps with your provider.

What router should I use with my modem?

Any modern router works, but for best results choose Wi‑Fi 6/6E, consider mesh for large homes, and ensure the WAN port is 2.5G if your modem and plan exceed 1 Gbps.

• Wi‑Fi 6/6E for higher throughput and efficiency
• Mesh systems for whole‑home coverage
• Gaming/QoS features if latency matters
• 2.5G WAN/LAN ports for multi‑gig service

Can These Cable Modems Be Used With Any Internet Service Provider?

No. DOCSIS cable modems work only with cable ISPs like Xfinity, Spectrum, and Cox. They do not work with fiber, DSL, satellite, or fixed wireless providers.

Are These Cable Modems Compatible With Both Windows and Mac Operating Systems?

Yes. Your computer’s operating system does not affect modem compatibility; the key factor is ISP network approval.

Are There Any Additional Fees or Charges Associated With Using These Cable Modems?

You’ll pay for your internet plan and any applicable ISP equipment fees if you rent. Some providers include a modem at no charge; others charge monthly for gateways or premium add‑ons.

Can These Cable Modems Be Used for Both Residential and Commercial Purposes?

Yes, if the modem is approved for the specific plan and provider. For business service, confirm the modem is on the provider’s business‑approved list.

Do These Cable Modems Come With a Warranty or Guarantee?

Yes. Most retail modems include a limited manufacturer warranty. Keep your receipt and register the product to streamline support if needed.