The Best 3 Cable Modems for Comcast’s Gigabit Service Plan: Save Money by Stopping Your Rental

Looking to stop renting your cable modem from Comcast and save money on your monthly internet service bill? You’ve come to the right place! We at have reviewed dozens of cable modems compatible with Comcast’s “Gigabit” service plan and narrowed it down to the top three models that will give you exceptional speed, reliability, and performance.

Why Consider Buying Your Own Modem?

  • Cost Savings: Buying your own modem usually pays for itself in less than a year.
  • Better Performance: High-quality modems often provide better speeds and more reliable connections.
  • Features: Some modems come with additional features like built-in WiFi routers, USB ports, etc.

Criteria for Choosing the Best Cable Modems for Comcast’s Gigabit Service

Before diving into our top picks, let’s review the criteria we considered when evaluating these models:

  1. DOCSIS Standard: At least DOCSIS 3.1 for gigabit speeds
  2. Max Download and Upload Speeds: Should support speeds higher than what the Comcast Gigabit plan offers
  3. Built-in Features: WiFi capabilities, Ethernet ports, etc.
  4. Price: A balance between affordability and features
  5. Customer Reviews: Reliability and customer satisfaction

1. ARRIS SURFboard SB8200

Features You’ll Love

  • DOCSIS 3.1 Technology: Ensures you get the fastest speeds possible
  • 32×8 Channel Bonding: Provides excellent throughput for multiple devices
  • Two 1-Gigabit Ethernet Ports: Allows for flexible, high-speed wired connectivity


  • Max Download Speed: 2 Gbps
  • Max Upload Speed: 1 Gbps
  • Channels: 32×8 Channel Bonding
  • Ethernet Ports: 2
  • WiFi: No
  • Price Range: $$

Why It’s Our Top Pick

The ARRIS SURFboard SB8200 excels in performance and reliability. While it doesn’t come with built-in WiFi, its gigabit Ethernet ports mean you can connect it to any router of your choice, giving you flexibility in building your home network.

2. NETGEAR Nighthawk CAX80

Features You’ll Love

  • Built-in WiFi 6 Router: Latest WiFi technology for multiple devices
  • 4 Ethernet Ports: Great for connecting multiple wired devices
  • OFDMA Technology: Improved efficiency and lower latency


  • Max Download Speed: 2 Gbps
  • Max Upload Speed: 1 Gbps
  • Channels: 32×8 Channel Bonding
  • Ethernet Ports: 4
  • WiFi: Yes (WiFi 6)
  • Price Range: $$$$

Why It’s Worth Considering

The NETGEAR Nighthawk CAX80 is a 2-in-1 device that includes a cable modem and a powerful WiFi 6 router. It is on the pricier side but offers a range of advanced features and exceptional performance.

3. Motorola MB8600

Features You’ll Love

  • Active Queue Management (AQM): Reduces internet latency and lag
  • One Open Source Software-Ready Ethernet Port: Offers flexibility for advanced users
  • Easy Setup: Simplified setup with Motorola’s mobile app


  • Max Download Speed: 1 Gbps
  • Max Upload Speed: 1 Gbps
  • Channels: 32×8 Channel Bonding
  • Ethernet Ports: 1 (Software-Ready)
  • WiFi: No
  • Price Range: $$

Why It’s a Great Choice

The Motorola MB8600 is another high-performance, DOCSIS 3.1 modem that’s a bit more budget-friendly. With its AQM feature, you’re guaranteed a smoother internet experience, particularly during online gaming and video conferencing.

Activating and Installing Your Own Modem: It’s Easier Than You Think!

One of the concerns many people have about buying their own cable modem is the perceived complexity of setting it up. We get it; no one wants to feel stuck with a device they can’t operate. But we have good news: Installing and activating your own modem is actually quite simple, even if you don’t consider yourself “tech-savvy.”

What You’ll Need

  • Your New Cable Modem: Make sure it’s compatible with Comcast’s Gigabit service.
  • Ethernet Cable: Usually provided with the modem.
  • Computer or Smartphone: For the activation process.

Simple Steps to Install and Activate

  1. Unplug Your Old Modem: If you’re replacing a modem, make sure to unplug it first.
  2. Plug in Your New Modem: Connect it to the power outlet and cable line.
  3. Connect to Computer/Router: Use the Ethernet cable to connect your modem to your computer or WiFi router.
  4. Open Web Browser: Once everything is connected, open a web browser on your computer.
  5. Activation Portal: Most of the time, you’ll be automatically redirected to Comcast’s activation page. If not, you can go to the Comcast website and navigate to the activation section.
  6. Follow On-Screen Instructions: Input the required information, usually your account number and phone number associated with your Comcast account.
  7. Restart Modem: After activation, your modem will reboot. Once it’s back online, you should be connected to the internet.

Customer Support is Just a Call Away

If you encounter any issues during the installation and activation process, Comcast’s customer support is just a phone call away. They can walk you through the entire process or resolve any issues you might be facing.

It’s That Easy!

The entire process usually takes no more than 20-30 minutes, and you’ll only have to do it once. After that, you can enjoy your high-speed internet without worrying about monthly rental fees for your modem.

By taking this step, not only do you save money, but you also have more control over your own network, which can result in faster speeds and a more reliable connection.

So, if the idea of setting up your own modem has been holding you back, rest assured that it’s a lot easier than it seems. With a few simple steps, you’ll be up and running with your new modem in no time.

Conclusion: Make an Informed Decision

Now that you’ve seen our top picks for cable modems compatible with Comcast’s Gigabit service, it’s time to make your choice. Consider what’s most important for your home setup—whether it’s maximum speed, built-in WiFi, or simply saving money in the long run.

Buying your own modem is an investment that can save you money and provide you with better internet performance. Choose wisely!

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