The 10 Best Cable Modems

Updated December 29, 2017 by Daniel Imperiale

10 Best Cable Modems
Best High-End
Best Mid-Range
Best Inexpensive
We spent 42 hours on research, videography, and editing, to review the top choices for this wiki. Paying your ISP to rent one of their cable modems is today's equivalent of renting a handset from the phone company. Save some money and improve your internet speeds with one of these instead. We've included a few very affordable models as well as more feature-rich options ideal for gaming and streaming HD and 4K video on multiple devices simultaneously. When users buy our independently chosen editorial picks, we may earn commissions to support our work. Skip to the best cable modem on Amazon.

10. Arris Surfboard SB6183

The Arris Surfboard SB6183 has a data transfer ceiling of up to 686 Mbps, which is more than enough bandwidth to accommodate the majority of consumer-level internet plans. It works with a wide range of service providers; just be certain to check that yours is one of them.
  • well-ventilated body
  • 2-year limited warranty
  • some companies are phasing it out
Brand Arris
Model SB6183
Weight 1.2 pounds
Rating 3.7 / 5.0

8. Motorola MB7420

The Motorola MB7420 has been certified by a number of leading cable service providers, including Comcast Xfinity and Time Warner Cable among others. Its full-band-capture digital tuner ensures consistently fast internet speeds.
  • integrated power surge protection
  • easy to install and to set up
  • device gets very hot
Brand Motorola
Model MB7420-10
Weight 8 ounces
Rating 3.9 / 5.0

7. Linksys High Speed CM3024

The Linksys High Speed CM3024 bonds 24 downstream DOCSIS 3.0 channels to reach download speeds of up to 960 Mbps. This kind of throughput can support multiple devices streaming high-definition video or playing online games with no problem.
  • reliable intel puma 6 chipset
  • no built-in router
  • obnoxiously bright leds
Brand Linksys
Model CM3024
Weight 2.2 pounds
Rating 3.9 / 5.0

6. Netgear CM1000

The Netgear CM1000 is one of the first models available that utilizes DOCSIS 3.1, an upgrade to the more common 3.0 technology that runs up to ten times faster than its predecessor. At the moment, though, it's only compatible with Comcast and Cox.
  • high-end 32x8 channel bonding
  • easy self-activation
  • price is on the high end
Model CM1000-100NAS
Weight 2.5 pounds
Rating 4.4 / 5.0

5. Netgear Nighthawk AC1900

The 2-in-1 Netgear Nighthawk AC1900 comes with an extensive troubleshooting manual that can take you step-by-step through any problems you might encounter that your ISP isn't needed to fix. It works with all the major providers, but it's especially effective with Comcast.
  • ac1900 wi-fi routing
  • easy dlna server setup
  • combo units not ideal for all users
Model C7000-100NAS
Weight 3.3 pounds
Rating 4.3 / 5.0

4. Arris Surfboard SBG7580AC

Top-of-the-line speed makes the Arris Surfboard SBG7580AC ideal for environments where multiple devices require lots of bandwidth for gaming, streaming, or file transfers. Just make sure you can take advantage of all its cutting-edge technology before investing in it.
  • fast enough for majority of plans
  • works with most major cable services
  • dual-band wireless ac technology
Model SBG7580AC
Weight 3.9 pounds
Rating 4.9 / 5.0

3. Motorola MB 8600

It's hard to go wrong with the Motorola MB 8600. Made by a company that developed part of the underlying cable internet protocol, this highly reliable model can coax the most data out of your connection for years to come, because it's capable of gigabit-speed transmission.
  • three-way bonded router connectivity
  • one alternate ethernet output jack
  • high quality internal components
Brand Motorola
Model MB8600
Weight 2.1 pounds
Rating 4.9 / 5.0

2. Arris Surfboard SB8200

If your ISP is on the cutting edge of high-speed data, the Arris Surfboard SB8200 is worth a look. With full DOCSIS 3.1 support, this one is a good way to future-proof your cable connection in case of an impending upgrade to your local services.
  • certified by cox and comcast
  • two hardwired ethernet ports
  • great for 4k video streaming
Model SB8200
Weight 3 pounds
Rating 4.9 / 5.0

1. Netgear CM700

The Netgear CM700 boasts 32x8 channel bonding to maximize bandwidth on your premium internet plan. Its built-in self-activation capabilities allow you to get up and running with your service provider in almost no time at all.
  • download speeds of up to 1400 mbps
  • compatible with macs and pcs
  • support for ipv6
Model CM700-100NAS
Weight 1.3 pounds
Rating 4.9 / 5.0

What Type Of Cable Modem To Buy

From a technical standpoint, there are two types of cable modems. You have older, one-way cable modems that run over standard coaxial cable networks. They only offer download speeds up to 2 Mbps and actually have no upload capacity.

Luckily this slow, one-way approach has been mostly phased out by now, and there is very little chance you'll even see this kind of cable modem for sale anymore. The newer type of cable modem is a hybrid fiber/coax modem. These run over HFC cables which are considerably faster and offer download and upload capacity.

From a consumer viewpoint, there are also two types of cable modems, both of them being hybrid fiber/coax models. Since the older one-way cable modems aren't really being sold anymore, they won't have to factor into your decision making. Your choice will come down to standard cable modems and cable modem/router combos.

A standard cable modem will give you access to the internet, but won't provide your home with any WiFi signal. If you have a standard cable modem and you want WiFi, you'll have to purchase a separate wireless router. On the other hand, a 2-in-1 cable modem/router combo gives you both internet and WiFi access from one unit.

Each of these types has their own benefits and drawbacks. 2-in-1 models are more space efficient, as you won't need to find room for two separate units, and they also allow for a cleaner looking installation since there will be less cables and you'll only be using one power outlet.

2-in-1 models also allow you to get setup and running quicker as you don't need to configure two separate devices. They are also easier to troubleshoot. If one part of the device stops working though, the entire unit needs to be replaced and combo units are more expensive than replacing just a modem or router.

Separate units allow for more control over features. For example, with a dedicated router, you can enable a dynamic DNS or prioritize your network traffic using QoS features. You can also install different router firmware if you desire. Dedicated routers generally provide slightly faster WiFi speeds as well. For the average person though, a combo unit can provide everything you need as most people won't know how or why to use these advanced features and the speed boost probably won't be noticeable.

Cable Modems Versus DSL Modems

Both cable modems and DSL modems provide always-on high speed internet access. DSL offers this via the use of a dedicated phone line, while cable modems provide internet access through the use of a shared cable television line.

In theory, a cable modem offers faster internet speeds, but in practice this isn't always true. Because cable networks are set up like shared local area networks (LAN) with many users sharing the same bandwidth, actual speeds can vary dramatically. The more users there are online at the same time, the slower your internet speed will be. You may find that you have blazing fast internet speeds late at night when people are sleeping, but in the evenings, when more people are using the internet, your downstream speeds may be cut in half.

DSL internet speeds are more consistent than cable as each user has their own dedicated line, but at the best of times, cable internet speeds outperform DSL by far. In addition to consistency, another advantage to DSL is better security. Since you aren't sharing a connection, it is harder for a hacker to access your personal network. A big disadvantage to DSL is that proximity to your internet service provider (ISP) can make a huge difference on the actual download and upload speeds you experience. Uploads are also far slower than downloads when using a DSL connection.

Internet Speeds Across America

Every year internet speeds have increased dramatically across the United States and other countries. The average household received speeds of 10 Mbps in 2011, and by 2014 that had jumped up to 31 Mbps. In 2015, the FCC redefined broadband quality internet speeds to be at a minimum of 25 Mbps downstream and 3 Mbps upstream.

Until recently, cable modem download speeds topped out around 100 Mbps, with uploads maxing out at 8 Mbps. The new DOCSIS 3.1 version has significantly increased that and allows for up to 10 Gbit/s downstream and 1 Gbit/s upstream. Currently though, these new gigabit speeds are only available to select areas of Atlanta, but will soon be offered in Miami, Nashville, and Detroit.

The average cable modem consumer using the newest technology and paying for the highest price plans can expect to theoretically be provided with speeds ranging from 150 Mbps to 250 Mbps. In practice though, most consumers will never actually experience speeds this high. Most people can expect to get 50% to 60% of their ISP's advertised speeds on a consistent basis.

Statistics and Editorial Log

Paid Placements

Wiki Granular Update & Revision Log

help support our research

Patreonlogoorange psj5g7Wiki ezvid low poly earth xdypeb

Last updated on December 29, 2017 by Daniel Imperiale

Daniel is a writer, actor, and director living in Los Angeles, CA. He spent a large portion of his 20s roaming the country in search of new experiences, taking on odd jobs in the strangest places, studying at incredible schools, and making art with empathy and curiosity.

Thanks for reading the fine print. About the Wiki: We don't accept sponsorships, free goods, samples, promotional products, or other benefits from any of the product brands featured on this page, except in cases where those brands are manufactured by the retailer to which we are linking. For our full ranking methodology, please read about us, linked below. The Wiki is a participant in associate programs from Amazon, Walmart, Ebay, Target, and others, and may earn advertising fees when you use our links to these websites. These fees will not increase your purchase price, which will be the same as any direct visitor to the merchant’s website. If you believe that your product should be included in this review, you may contact us, but we cannot guarantee a response, even if you send us flowers.