With more people working from home than ever before, having good internet coverage has never been so important.
If you, like many others, are on the lookout for the best cable modem on the market, stick with us, and we’ll help you find it.
We narrowed down the choices to five of the most popular and highly-rated cable modems out there so that you can work out which one will be best for you.
Don’t forget to check with your internet service provider to make sure you’re allowed to use your own modem and for a handy list of compatible devices.
Comparison Chart
Motorola 24×8 Cable Modem, Model MB7621, DOCSIS 3.0. Approved by Comcast Xfinity, Cox, Charter Spectrum, Time Warner Cable, and More. Downloads 1,000 Mbps Maximum (No WiFi)
ARRIS SURFboard SB8200 DOCSIS 3.1 Gigabit Cable Modem, Approved for Cox, Xfinity, Spectrum & others , White , Max Internet Speed Plan 2000 Mbps
NETGEAR Cable Modem CM1000 – Compatible with All Cable Providers Including Xfinity by Comcast, Spectrum, Cox | for Cable Plans Up to 1 Gigabit | DOCSIS 3.1, Black (CM1000-1AZNAS)
Best Cable Modem on the Market: Brief Reviews
1. Motorola MB7621 DOCSIS 3.0 Cable Modem
Motorola is a trustworthy brand within the mobile communications industry.
It has been a leading supplier of cable modems for many, many years.
The MB7621 Cable Modem was even voted the best cable modem (overall) in 2019 by Top Ten Reviews.
Product Highlights
This modem is black and has a slim, attractive design. Measuring 7.25 x 2.25 x 7.88 inches, it wouldn’t take up too much space on your shelf.
It is well-built with rugged lightning and power surge circuits to help protect the unit.
You also receive a two-year product warranty to help protect your overall investment.
As far as home modems go, this is considered a pretty powerful unit suitable for most home internet users.
Still, this DOCSIS 3.0 model doesn’t contain the latest technology available as DOCSIS 3.1 is also now available.
Most internet service providers can’t offer speeds that are beyond the DOCSIS 3.0 capabilities yet anyway.
This would be a great modem for most people’s needs, whether you need it for work or play, streaming, video-conferencing, or gaming.
It has 24 x 8 channels, which is usually recommended for speeds of 300 Mbps, but Comcast has certified it for internet speeds of up to 600 Mbps.
Cox and Charter Spectrum has also certified it for use with speeds up to 400 Mbps.
This cable modem is compatible with Xfinity X1, Time Warner Cable, BrightHouse, CableOne, SuddenLink, RCN, and some other internet service providers.
It features a full-band capture digital tuner, which will help ensure a faster and more reliable connection.
As with most cable modems within this price range, you will need to buy a separate router.
This modem will work well with almost all routers, including mesh networks like Orbi, eero, and Google WiFi.
Keep in mind that it doesn’t have a telephone jack, so it won’t allow you to run a home telephone.
If your internet service package comes with a home phone service you want to use, this won’t be the modem for you.
When you receive your modem, you’ll get a quick start guide to help you get it set up easily so that you can start using it.
Plus, Motorola has English- and Spanish-speaking customer support specialists available to help you.
They are USA-based, their friendly and professional support is available via phone or online.
The Good
We love the fact that this modem is the most affordable option on our list.
It would make a great purchase for someone who already has a router.
We also really like the free Motorola support and the two-year warranty.
The Bad
This is a cable modem only, so if you don’t already have a router, you’ll need to buy one separately.
Pros:
- Comes from a reputable brand
- Affordable
- Compatible with most ISPs
- Free customer support available
- Two-year warranty
- Built to last
Cons:
- Doesn’t support cable voice services
- Needs a separate router
- Technology is older and will date more quickly
2. Arris SURFboard SB8200 DOCSIS 3.1 Cable Modem
Arris boasts a 60-year legacy of innovation, having invented digital TV.
More than that, it was also the first company to bring wireless internet into homes.
This cable modem contains the latest internet speed technology available, enabling much faster internet speeds with up to two IP addresses.
Product Highlights
This modem is white and more compact than the Motorola unit, measuring just 5.13 x 1.7 x 5.25 inches.
It offers DOCSIS 3.1 speeds, which you’ll need if you want to take advantage of the fastest internet speeds available.
Some service providers, depending on where you live, do offer DOCSIS 3.1 speeds already.
They’re not widely available at this point, so check with your ISP beforehand because you may not need something so powerful.
However, you may wish to invest in the DOCSIS 3.1 system anyway since it still works with DOCSIS 3.0. With this, you’ll be ready for future developments.
It features 32 downstream x eight upstream DOCSIS 3.0 bonded channels and two downstream x two upstream DOCSIS 3.1 channels.
This modem can support cable internet speed plans up to an amazing 2 Gbps.
However, a second IP address will be needed from your cable internet provider to reach those higher speeds.
The modem also has two 1 GB ethernet ports capable of link integration, offering versatile connections to your computer, router, printer, and more.
Like with the Motorola model, this modem does not support cable telephone service, and you will also need a separate router.
The Good
This is a reasonably-priced modem for people who want and can access the most advanced internet speeds available.
It will also be a good choice for people wanting to buy a more future-proof modem, ready for those faster speeds when they become available.
The Bad
Unfortunately, similar to the cable modem from Motorola, you will have to invest in a separate router for WiFi access in your home.
Pros:
- Compatible with most ISPs
- Capable of much faster internet speeds
- More future-proof technology
- Modern, compact design
- Versatile connection options
Cons:
- Needs a separate router
- Doesn’t support cable voice services
- Modem gets warm sometimes
3. Netgear CM1000 DOCSIS 3.1 Cable Modem
Netgear is a multinational company with a great history of producing excellent modems and WiFi routers.
Their CM1000 cable modem was the industry’s first certified DOCSIS 3.1 system and is another ideal modem for those wanting to stay ahead of modem technology.
Product Highlights
This modem comes in black and will take up a bit more room on your countertop than the Motorola device, as it measures 8.8 x 5.4 x 5.9 inches.
Like the Arris cable modem, it is also capable of providing faster DOCSIS 3.1 internet speeds.
It features the same bonded channels as the Motorola, which will provide you with faster download speeds, even during peak usage hours.
This device would offer the user ultra-reliable internet speeds ideal for 4K HD streaming, multi-player gaming, and more.
However, it only has one ethernet connect point, which you would normally connect directly to your computer or a WiFi routing device.
You will find that it is a highly compatible device, suitable for all major cable internet providers, and pairs with any WiFi router device.
It can support cable plans with up to 1 GB speed, providing you ultimate connection at home.
This modem is also very user-friendly and easy to set up; you can have it up and running in less than five minutes.
Again, buyers should be aware that this modem is not compatible with cable voice services and that you will need a separate router for WiFi.
The Good
Like the Arris, this modem is a great choice for people wanting to invest in a more future-proof modem.
The Bad
We don’t like how much space this modem takes up, especially compared to the model from Arris; it seems unnecessarily bulky.
Pros:
- Reputable brand
- Well ventilated
- Affordable
- Compatible with most major ISPs
- DOCSIS 3.1 spec is capable of much faster internet speeds
- Future-proof technology
Cons:
- Requires a separate router
- Doesn’t support cable voice services
- Limited RAM
- Only one ethernet cable connection point
- Bulkier design than the Arris model
4. ZyXEL C3000Z Cable Modem and Router CenturyLink
ZyXEL is a Taiwanese manufacturer of networking devices.
Its C3000Z is one of the top recommended cable modems compatible with CenturyLink.
Its best selling point yet is the fact that it is a modem and router in one.
Product Highlights
This modem is a great choice for people wishing to connect to the CenturyLink internet service.
It features WiFi speeds up to 450 Mbps, download speeds of up to 1 Gbps, and dual-band wireless connectivity with 802.11b/g/n.
It is a high-speed internet connection and router all in one unit, so the price you see is the total price you’ll pay for setting up WiFi in your home.
The built-in router offers a great wireless range around most average-sized homes, but you may need something more powerful for larger homes.
It is also WPS enabled, and you can add up to four separate SSIDs for separate WiFi access accounts if needed.
Not only is it a great price, but it also saves you shelf space because you don’t have to find space for two devices, but just this one.
As a plug-and-play device, it’s easy to set up and get onto the internet, but there have been some complaints of it dropping connection from time to time.
For CenturyLink users, this is an easy, fast, and affordable way to connect to WiFi at home without paying rental prices.
The Good
We like the fact that this modem comes with a built-in wireless router.
It’s also handy to have extra SSIDs so that you can prioritize your WiFi traffic.
The Bad
This modem can’t be used with any internet services apart from those supplied by CenturyLink.
Unfortunately, it has also been known to drop signal from time to time.
Pros:
- Recommended by CenturyLink
- Good internet speeds and supports 5G
- No need to buy a separate router
- Supports cable home phone services
- Can separate and prioritize your WiFi traffic
Cons:
- Not compatible with any ISPs apart from CenturyLink
- Drops internet signal from time to time
5. TP-Link AC1750 Cable Modem and Router
Chinese manufacturer TP-Link is the world’s leading provider of WiFi networking devices.
This entry-level modem and router is a great option for people on a budget who need decent but basic cable internet and WiFi at home.
Product Highlights
Our top budget pick comes from TP-Link.
If you’re looking to save money on rental fees, this all-in-one budget combo unit could have you saving money back on rental fees in under a year.
This modem will work great for cable internet plans up to 300 Mbps and is compatible with most internet service providers.
The problem is, it features just 16 downstream and four upstream channel bonds, making it the slowest modem on this list.
Then again, not everyone needs faster internet than this unit provides, so this is perfect for those people.
The built-in router offers users a really great range with six internal antennas.
Plus, the high-powered amplifiers will help boost signal strength and reduce interference.
This product also comes with a two-year warranty and free technical support available ‘round the clock.
The Good
We think it’s a great bargain that this device is a modem and router all in one for less than a hundred dollars.
The Bad
Unfortunately, this is the slowest-performing modem featured here, and by some margin.
Still, while the technology is already outdated for some, it will perform well enough for many people who just need basic WiFi access at home.
Pros:
- Budget-friendly price
- Compatible with all major ISPs
- No need to buy a separate router
- Offers good WiFi coverage
- Two-year warranty
- Free technical support
Cons:
- Not the highest speed connection here
- Technology may become outdated in the next few years
Buyer’s Guide
While you can always rent a cable modem from your ISP, some may prefer their own unit to save money in the long run as well as enjoy the benefits of a newer model.
The market offers a long list of choices, too. It’s up to you to decide which cable modem meets your home’s demands.
Here are the major points to look into to make sure you’re buying the right model:
1. Modem vs Modem/Router Combo
First, you will have to decide if you want a modem or a modem/router in one.
A modem/router, also called a gateway, is a device designed to work like a modem and a router.
It picks up and receives a signal through its coaxial cable and then sends it wirelessly throughout the entire house.
If you’re happy with your current router, you probably won’t need a gateway, and you can just upgrade your modem.
Modern routers will work with most modems, so you won’t find any problems with getting a stand-alone cable modem to pair with your router.
On the other hand, you would want to get a modem/router combo or two separate devices if you’re still using the router provided by your ISP.
2. DOCSIS
Data Over Cable Service Interface Specification or DOCSIS is the protocol used by ISPs to provide broadband access.
Get a DOCSIS 3.1 model if your internet plan is over 1Gbps. Those with slower internet speeds than that can do away with the 3.0 version.
3. Speed
Also check the modem’s upload and download speeds.
It’s easy to be blinded by the numbers and buy a modem that advertises the fastest download and upload speeds.
However, you have to make sure that these numbers correspond with your internet subscription.
If your internet plan only offers a download speed of up to 100 Mbps, you will find no use for a modem that provides more than that.
4. Channels
If you aren’t too concerned about how big of a data your internet service provider can provide at any given time, don’t stress yourself too much about upstream and downstream channels.
Just make sure you get a modem with at least 16 channels, and you’d be good to go.
5. Compatibility
Lastly, you will have to get in touch with your ISP and ask them if they support the modem you’re eyeing.
Anyway, once you have the device, you would also need to contact your ISP so that they can help you set it up.
Cable Modem FAQs
1. Does a better cable modem make a difference?
Investing in a better cable modem can make a difference to the internet service you receive in a number of ways.
Firstly, it could potentially offer you a faster internet connection because some modems offer higher download speeds than others.
For the fastest connection possible, you may need a better modem than the one you already have, especially if your current modem can’t keep up.
Still, the internet speed your modem can provide will also depend on the download speeds offered by your internet service provider (ISP).
It will also be affected by the internet plan you pay for.
Buying a new modem could also offer you a more reliable connection.
If you’re experiencing a patchy service with frequent dropouts, a new modem could be the answer.
2. Does buying a new modem increase Internet speed?
As mentioned, a new modem could increase your internet speed, but it depends on the internet package you pay for from your ISP.
If you pay for speeds of 300 Mbps, a brand new DOCSIS 3.1 modem will still only be able to perform at 300 Mbps.
So, you may need to replace your modem and upgrade your internet package if you want a faster connection.
3. Is it better to buy your own modem and router?
There are a number of things to consider before purchasing your own modem and router, as opposed to renting from your internet service provider.
Buying May Save You Money
In some cases, you can save money by investing in your own modem and router.
Most internet service providers will charge you a monthly fee, usually around $5 to $10, for renting a modem from them.
Comcast, Cox, Optimum, and Spectrum all charge fees for modem rental, although this can vary on the plan you’re on.
For example, if you’re on a TV, internet, and phone bundle plan from Cox, the modem rental is thrown in for free.
You can check how much you’re paying by checking your monthly bill.
Buying your own modem will mean a higher upfront cost, but you could save yourself $60 to $120 per year in rental fees.
Plus, the modem rental from your ISP will usually include a router, too, so buying your own router will also add to the upfront cost.
Depending on the original cost of the two devices, you could potentially get your money back in the first couple of years.
From then on, you’ll be saving money.
Buying Can Offer You Better Coverage
The modem and router provided by your internet service provider may not offer the kind of coverage you want in your home.
If you want strong, fast coverage all throughout, consider buying a better router that enables this.
If so, then buying a modem on top of this will not add too much more to the cost.
Renting Is Hassle-Free
The main benefits of renting arise from how easy and hassle-free it is.
Your ISP will take care of making sure you have a compatible modem for your allowed download speeds.
Plus, you can trade it in when it becomes obsolete or if it stops working at any point.
If you’re having problems with your rented modem, you can call on your internet service provider’s customer service team to help you fix it.
However, if you own your own modem, you will have to troubleshoot these problems yourself.
Renting May Be Your Only Option
Check whether or not you’re allowed to use your own modem, as some internet service providers won’t let you.
Before you invest too much time in modem shopping, give your internet service provider a call.
Ask them if you can run their service through your own modem, and once you confirm this, they will also be able to provide you with a list of compatible modems.
If you have DSL or fiber broadband, you won’t be able to use a cable modem because you’ll have to rent or buy special equipment from your ISP.
Also, if you bundle your home phone service with your internet plan, you will need a telephone port on your modem.
This can make the modem options available to you quite expensive, as most cheaper models don’t come with a telephone port.
4. How often should you change your modem?
Depending on who you speak to, you should change or upgrade your modem every three to four years.
This timeline accounts for how often people usually change their smartphone devices (every two years) and their computers (every four years on average).
What Is the Best Cable Modem to Buy?
After careful consideration, we think the best cable modem on the market right now is the Arris SURFboard Modem.
Realistically, this cable modem is way ahead of its time when it comes to the technology and speeds it offers.
As such, we think it makes a great investment for years to come.
The Arris takes the edge over the Netgear modem because it’s very slightly cheaper and has that extra ethernet port.
However, if your needs and budget are more basic, you can’t go wrong with the TP-Link modem and router.