7 Best Compatible Modems For Suddenlink in 2024 [Full List]

Note, no device can get you faster internet speeds than your internet plan provides.

Also, get the device you need. A modem and a router are not the same things. Some types of internet require both others only one. If you are uncertain, click here

This is our review of the best cable modems for Suddenlink in 2024, including a complete list of all Suddenlink-approved modems. 

Suddenlink modems and routers

As a Network Engineer, I have spent hours researching and testing which modem is best for Suddenlink.

And I have concluded that the best modem for Suddenlink is the Arris Surfboard SB8200. Because it’s fast, future-proof, and goes for a fair price.

Arris Surfboard SB8200
Source: Surfboard.com

Arris SB8200 - Editors Choice’s

Best Overall

  • Type: Cable Modem
  • Recommended for: Any Suddenlink Plan
  • DOCSIS: 3.1
  • Warranty: 2 years
  • Chosen as: Best Overall

But the reality is not that simple with Suddenlink. Because what modem you can get depends on your Internet Market. 

With 1-Gig Markets, a DOCSIS 3.1 modem will work. But with 150 Mbps Markets or below, you should not get a modem exceeding 16×4 channels. 

Therefore, I have reviewed the top 7 modems for Suddenlink. So you can choose the one that works for you. 

Let’s get started. 

  1. Best OverallArris Surfboard SB8200 – Cable Modem
  2. Best PerformerMotorola MB8611 – Cable Modem
  3. Runner UpNetgear CM600 – Cable Modem
  4. Budget-FriendlyMotorola MB7420 – Cable Modem
  5. Best Premium OptionMotorola MG8725 – Modem/Router Combo
  6. Best PerformerNetgear C7800 – Modem/Router Combo
  7. Best Budget-FriendlyMotorola MG7540 – Modem/Router Combo

Here are the 7 best Suddenlink-approved modems.

#1 Best Overall – Arris Surfboard SB8200

Arris Surfboard SB8200
  • Type: Cable Modem
  • Recommended for speed: Any Suddenlink Plan
  • DOCSIS: 3.1
  • Warranty: 2 years
  • Chosen as: Best Overall


  • Future-proof
  • Compatible with plans up to 2000 Mbps
  • 2-year warranty


  • Ethernet aggregation is a bit hard to use

The Arris Surfboard SB8200 is the modem I recommend for any Suddenlink customer looking to future-proof their cable modem. 

It’s DOCSIS 3.1 and has Ethernet aggregation, making it compatible with plans up to 2000 Mbps. 

A speed so fast that it would be enough to watch more than 20 4K movies simultaneously.

This speed is possible because Ethernet aggregation means that you can combine two ethernet ports into a single data stream capable of supporting 2 Gbps. 

However, this feature is not very useful today since Suddenlink doesn’t have any cable internet plan exceeding 1-Gig. 

But, as time moves forward, this feature will likely become useful as internet plans continue to increase. That is why the SB8200 is a good investment for the future. 

That said, if you live in a Suddenlink Internet Market that only offers 150 Mbps or less, then you should not get this modem. 

Because it’s a bit too new for Suddenlink’s older infrastructure. Later in the article, you can learn more about Internet Markets.

Altogether, the Arris Surfboard SB8200 is a modem for the future. If you get it now, you don’t worry for years.

Read the full review.

#2 Best Performer – Motorola MB8611

Motorola MB8600
  • Type: Cable Modem
  • Recommended for speed: Suddenlink 1-Gig internet 
  • DOCSIS: 3.1
  • Warranty: 2 years
  • Chosen as: Best Performer


  • Future-proof
  • Works for plans up to 2500 Mbps
  • 2-year warranty


  • Occasionally excessive

The Motorola MB8611 is your best option if you are looking for raw performance. 

Equipped with DOCSIS 3.1 and a 2.5 Gig Ethernet port, this modem is compatible with internet plans up to 2500 Mbps. 

This is more than Suddenlink, or any other ISP offers the public. So fast, you could watch more than 15 8K movies simultaneously.  

A good way to view the MB8611 is like a more refined version of the SB8200. Newer, faster, and a bit more future-proof. 

That said, like the SB8200, you should not get this modem in an older Internet Market. 

So if you have an internet plan under 150 Mbps, you could be in an older market. If you have more than 150 Mbps, you’re fine. 

Learn more about the subject in the guide below. 

Overall, the Motorola MB8611 is a great modem and high-performing modem. Just note that it’s sometimes a bit excessive.

Read the full review.

#3 Runner Up – Netgear CM600

Netgear CM600
  • Type: Cable Modem
  • Recommended for speed: 500 Mbps or below
  • Channels: 24×8
  • DOCSIS: 3.0
  • Warranty: 1-year
  • Chosen as: Runner Up


  • More affordable
  • Often enough


  • Not future-proof

The Netgear CM600 is a good option for you with the Suddenlink 500 Mbps plan or below that is not in a 150 Mbps internet market or below. 

So, if your internet plan is less than 150 Mbps, proceed with caution (learn more below). But if it’s between 150 and 500 Mbps, this modem is a solid option. 

The CM600 is a DOCSIS 3.0 modem with 24×8 channels. This means that it’s pretty fast but not future-proof.

Because if you upgrade to Gigabit internet, you will have to get a better modem. That said, it will set you back less than a DOCSIS 3.1 modem in the short term. 

Altogether, the Netgear CM600 is a good option for you looking for a more budget-friendly cable modem. 

#4 Budget-Friendly – Motorola MB7420

Motorola MB7420
  • Type: Cable Modem
  • Recommended for speed: 300 Mbps or below
  • Channels: 16×4
  • DOCSIS: 3.0
  • Warranty: 2-years
  • Chosen as: Budget-Friendly


  • Cheap
  • 2-year warranty


  • Not future-proof
  • Slow

If you are in an older Internet Market, which means you only have access to internet plans up to 150 Mbps. Then, the Motorola MB7420 is your best option.

This is because the MB7420 is DOCSIS 3.0 with 16×4 channels. And this means that it’s compatible with Suddenlinks older Internet Markets. 

However, if you are in a new market, I would not recommend this modem. Because for the price, the CM600 is a better value. 

Also, note that it only works for internet plans up to around 300 Mbps, so it’s not especially future-proof.

The Motorola MB7420 is best for you living in a rural area with slower internet and older infrastructure. 

Link to Router Page

Need a Router To Your Suddenlink Modem?

If you don’t get a modem/router combo, you might want a new router for your modem. If that’s the case, check out our article on the best routers for Suddenlink.

#5 Best Premium Option – Motorola MG8725

Motorola MG8725
  • Type: Modem/Router Combo
  • Recommended for speed: Suddenlinks 1-Gig plan
  • Max tested speed: 800+ Mbps
  • DOCSIS: 3.1
  • Warranty: 2-year
  • Chosen as: Premium Option


  • Future-proof
  • Incredibly fast
  • Great range


  • Excessive for slower plans
  • Pricey

The Motorola MG8725 is for you looking for a modem/router combo and has the Suddenlink 1-Gig plan. 

Unfortunately, I couldn’t test its max speed since my internet plan only reached 800 Mbps. 

But it did reach 800 Mbps from 5 feet, with other results being; 529.86 Mbps from 25 feet and 289.32 Mbps from 50 feet.  All using the 5GHz band.

These results are one of the best I have gotten from a modem/router combo, equaling the Netgear CAX80. It will be enough for a family of 7+ people to use the internet simultaneously. 

Range-wise, the MG8725 also performed exceptionally, reaching around 90-100 feet. Enough for any but the largest homes. 

Furthermore, it is also the first cable modem on the market equipped with Low Latency DOCSIS (LLD). [1]

This feature is intended to lower your latency when playing online games or on video calls. But during testing, I didn’t notice any substantial difference. 

The same will likely happen for you since Suddenlink is yet to implement it.

The MG8725’s biggest drawback I like to note about the MG8725 is that it’s excessive for you with a slower internet plan.

It’s also like the other DOCSIS 3.1 modem, likely to cause problems if you live in a rural area with older internet infrastructure. 

Altogether, the Motorola MG8725 is a fast and future-proof modem/router combo that delivers for the money. 

Read the full review.

#6 Best Performer – Netgear C7800

Netgear C7800
  • Type: Modem/Router Combo
  • Recommended for speed: 500 Mbps or below
  • Max tested speed: 513.64 Mbps
  • DOCSIS: 3.1
  • Warranty: 1-year
  • Chosen as: Best Value


  • Fast Speeds
  • Decent range


  • Lacks features
  • Could be cheaper

The Netgear C7800 is a more moderate modem for you with a Suddenlink plan of 500 Mbps or below. 

It managed 513.64 Mbps from 5 feet, 309.15 Mbps from 25 feet, and 155.21 Mbps from 50 feet during testing.

This performance is pretty good considering it’s a Wi-Fi 5 router and will be enough to provide a family of around 5 people with a good internet connection. 

The modem is DOCSIS 3.1, and it will thus not work for you living in a 150 Mbps Internet Market or below (learn more under DOCSIS).

The C7800 also had a pretty decent range of around 80-90 feet. This is enough for a larger home if the device is closer to its center

The biggest con with the device is that it lacks extra features. Because it’s missing things like Parental Controls and QoS that allow you to restrict users on your network and prioritize applications. 

Overall, the Netgear C7800 is a solid modem/router combo that is somewhat future-proof and provides a lot of value for the money. Just don’t get it if you want the extra features.

Read the full review.

#7 Best Budget-Friendly – Motorola MG7540 

Motorola MG7540
  • Type: Modem/Router Combo
  • Recommended for speed: 300 Mbps or less
  • Max tested speed: 301.85 Mbps
  • Channels: 16×4
  • DOCSIS: 3.0
  • Warranty: 2 years
  • Chosen as: Budget-Friendly


  • Affordable


  • Low range
  • Lacks features

The Motorola MG7540 is for you who want a modem/router combo and has an internet plan of 300 Mbps or less. 

In testing, it reached 301.85 Mbps from 5 feet and 102.38 Mbps from 25 feet. Decent results consider its price tag. 

Enough for a family of around 3 people to use the internet without issues. [2]

The modem is also DOCSIS 3.0 with 16×4 channels. This makes it compatible with any Internet Market, even the older ones. 

The biggest drawback with the Motorola MG7540 is its Wi-Fi range, which only reached about 70 feet. 

This is enough for a normal-sized home if the device is placed closer to its center. It honestly fits best for the average apartment. 

Altogether, the Motorola MG7540 is perfect for you with an internet plan below 150 Mbps. Because then you can be sure it will work. 

Read the full review.

Here is a list of all Suddenlink certified modems. [3]

BrandModel #With RouterChannelsDOCSISPuma Chipset
Motorola MG8725Yes32×83.1No
NetgearC6230 Yes16×43.0No
NetgearCM500No16×4 3.0No
NetgearCM600No24×8 3.0No
LinksysCG7500Yes24×8 3.0Yes
TP-LinkARCHER CR500Yes16×43.0No
TP-LinkARCHER CR700Yes16×43.0No
TP-LinkTC-W7960Yes8×4 3.0No
UbeeDDW365Yes8×4 3.0No
UbeeDDW366Yes8×4 3.0No

Puma Chipset is a problematic chip some modems and routers use. I recommend avoiding models using it. Even though I should note that Suddenlink has fixed most of its problems by now.

Here are the most important things to consider before buying yourself a Suddenlink certified modem. For a more general guide, check out what to consider before buying a modem

Suddenlink’s official requirements for third party modems on their network are the following:

  • DOCSIS 3.0 or DOCSIS 3.1 certified 
  • At least 8 downstream channels
  • Not using EURODOCSIS (only in America)

However, after much research, I can tell you that this is not the entire truth. 

Because if you are in an older Internet Market that only supports internet speeds up to 150 Mbps or less. Then you should not get a modem that exceeded DOCSIS 3.0 with 16×4 channels. 

Because modems with either DOCSIS 3.1 or 24×8 channels or more will be unreliable and likely drop internet connection. 

To know what Internet Market you are in, call Suddenlink and ask, or check the fastest internet plan available for you. [4]

You will learn more about the details surrounding this below. 

DOCSIS 3.1 or 3.0

DOCSIS is the telecommunication standard that cable internet uses to transfer data over the coaxial lines. 

For Suddenlink, you can usually get either DOCSIS 3.1 or 3.0. DOCSIS 3.1 is faster and newer, while DOCSIS 3.0 is slower but cheaper. 

For most reading this, I recommend getting a DOCSIS 3.1 modem. Because this will future-proof your modem for both speed increases and for when Suddenlink decides to upgrade their network. 

That said, there are exceptions. Because if you live in an area with older infrastructure, likely rural, you should get a DOCSIS 3.0 modem. 

Because a DOCSIS 3.1 modem will likely cause you problems, even though they are backward compatible with DOCSIS 3.0. 

So, now begs the question, how do you know if you are in an area with older infrastructure?

Well, it’s actually quite simple. Just check the highest internet speed that is available for you. 

If it’s 400 Mbps or more, then you’re in an area with newer infrastructure. But if it’s 150 Mbps or below, you are in an older one. 

If you are gettings a DOCSIS 3.0 modem, keep reading about the channels below. 

Channels (Only for DOCSIS 3.0) 

Channels are something that only DOCSIS 3.0 modem use. They decide the modem’s actual speed, with more channels equal more bandwidth.

For most ISP’s I simply say that the number of channels you have should match your internet plan. But for Suddenlink, it’s a bit harder. 

The basics do apply. If you have a 400 Mbps plan, you can’t get an 8×4 modem because such a modem would be too slow. But the Internet Markets makes this a bit harder. 

Because if you live in a 150 Mbps Internet Market or below (with older infrastructure). Then you should not get more channels than 16×4. 

If you live in a 400 Mbps Internet Market or more (with upgraded infrastructure). Then you simply need to match your internet plan. 

Check out the tables below for some help with this. 

Modem Speed

As I said, what modem you should get depends on your internet market and internet plan.

Because if you get a modem that’s is too slow, it will bottleneck your internet, and you won’t get what you are paying for. 

That said, for Suddenlink, you shouldn’t get a too fast modem either.

Check the tables below to see what modem you can get. 

150 Mbps Internet Marktes or Below

Here are the requirements for older internet markets. 

Internet SpeedDOCSIS Channels
15 Mbps3.08×4 or 16×4
30 Mbps3.08×4 or 16×4
50 Mbps3.08×4 or 16×4
75 Mbps3.08×4 or 16×4
100 Mbps3.08×4 or 16×4
150 Mbps3.016×4

400 Mbps Internet Markets or More

Here are the requirements for newer internet markets. 

Internet SpeedDOCSIS Channels
50 Mbps 3.0 or 3.18×4 or more
100 Mbps3.0 or 3.18×4 or more
200 Mbps3.0 or 3.116×4 or more
300 Mbps3.0 or 3.116×4 or more
400 Mbps3.0 or 3.124×4 or more
500 Mbps3.0 or 3.124×8 or more
1-Gig Internet3.132×8

Which Market Are You In?

So, to recount, how do you know what market you’re in?

Either call Suddenlink and ask, or check the fastest internet plan available. If it’s 150 or less, you’re in an older market. If it’s 400 or more, you are in a newer market. 

After talking to their support, they said that as long as the modem has VOIP capacity and fits their requirements it will work.

I for one am skeptical about this claim, but since I couldn’t find a Suddenlink technician to ask I can only say what the Suddenlink support said.

I will, however, still recommend you to contact Suddenlink and ask for a voice modem that will work for your area.

I for one asked about the CM500V and the support said that it will work for an internet plan at or below 300 Mbps.

If you have any more knowledge than I do about the subject, please let us know in the comments below.

Modem/Router Combo or Separate Devices

Another thing you get to think about is whether you want a separate modem and router or a modem/router combo (gateway). 

The difference is that the latter is one device with both the modem and router function while separate requires two devices for the same thing. 

As a Network Engineer, I recommend most people have separate devices. 

This is because separate allows you to change one if it needs an upgrade or breaks. It also permits for higher network performers and more customization. 

Furthermore, if Suddenlink decides they need to factory reset your modem (which they tend to do). Then, all your custom settings on the router will disappear if you have a modem/router combo. 

This is not to say that a gateway is useless. It certainly has its benefits, like taking up less space and having an easier to set up.

And since Suddenlink has cable internet, there are many gateways to choose between. Therefore, you can get one if you prefer it. 

Modem/Router Combo Benefits

  • Takes up less space
  • Often easier set up
  • More convenient

Separate Devices Benefits

  • Better performance
  • Can change one device instead of both
  • More customization and control
  • Doesn’t reset the router if Suddenlink decides they need to reset the modem

If you want a more comprehensive overview of the pros and cons of each option, then click here

Suddenlink has a fee of $10 a month to rent a gateway from them. [6]

This is not the highest fee out there, but neither the lowest. I would still, however, recommend you buy a third-party modem if you have Suddenlink. 

$10 a month makes $120 a year. Enough to get a new modem every year. And just 5 months can easily pay for a cheaper device. 

Thus, I recommend you buy a third-party modem. 

That said, there are reasons to rent. If you’re switching to fiber optic internet or moving soon. Then it might be cheaper to rent a modem for a couple of months. 

I should also note that I’m somewhat biased towards buying since I do make a small commission if you buy a modem. 

You can find a more in-depth guide on if you should rent or buy a modem here

Benefits of Getting a Third-Party Modem

As said above, I think it’s better to buy a modem than rent it. Here are the main reasons why. 

No Monthly Fee

Suddenlink has a monthly renting fee of $10 a month. A new cable modem costs between $50 and $200. This means that it takes between 5 and 20 months to pay it off. After that, you will save money every month. 

Faster Internet

A third-party modem will also often give you faster internet. Since the rented gateway you get from Suddenlink isn’t the best. Especially if you get a high-performing device. 

Just note that buying a too slow device could slow down your internet speed.

More Control

A third-party device enables you to choose features that you would benefit from. This could be extra VPN support for work-at-home purposes, parental controls for kids who spend too much time online, or guest networks for visitors. Things that you won’t have with your rented gateway. 

Here is a short instruction on setting up a modem with Suddenlink internet. 

  1. Pick a location with good airflow, so it doesn’t overheat. If you have a gateway, try to place it as close to the center of your home as possible to improve coverage. 
  2. Connect to the power cord and the coaxial cable. Then connect the modem to a PC and follow the rest of the setup manual that comes with the modem. 
  3. Call Suddenlink and inform them that you are changing network equipment. They will ask you for the MAC address for the device to activate. You can find it at the bottom of the modem/gateway. You can also go here to self-activate the modem. 

Suddenlink has a guide on its own if you want some more information. 

Suddenlink offers a lot of different internet speeds. And here, you can see what devices I recommend for each speed, with a cable modem and a gateway option. [7

Download SpeedRecommended Modem Recommended Gateway
150 Mbps or belowMB7420 MG7540
200 MbpsCM600 MG7540
300 MbpsCM600 C7800 
400 MbpsSB8200 C7800 
500 MbpsSB8200C7800 
1-Gig MB8611MG8725 


Here are some common questions regarding Suddenlink and third-party equipment.

Which is the best modem for Suddenlink?

After much testing, we deduced that the best modem for Suddenlink is the Arris Surfboard SB8200. Because it’s fast, future-proof, and reliable. 

It will, however, not work for everyone. To learn more, check the article above. 

How do I know if a modem is compatible with Suddenlink?

Suddenlink says its requirement is that a modem should either be a DOCSIS 3.0 or 3.1 with 8×4 channels or more.

That is, however, not the entire truth. Because if you are in an older Internet Market that only has internet speeds up to 150 Mpbs. Then you should not get a modem exceeding DOCSIS 3.0 with 16×4 channels.

What is the difference between a modem and a router?

The modem translates the analog signal into a digital signal that your device can understand. While the router distributes the internet in your home with Wi-Fi and ethernet and assigns your devices an individual IP address. 

For a more in-depth overview, check out Router Vs. Modem – What is the difference?

Our Verdict

Suddenlink is one of those ISP’s which seems to try its best to make it hard for their customers to get their own modem.

But, after much research and talking to Suddenlink, I have concluded that the best modem for Suddenlink is the Arris Surfboard SB8200

Because it’s future-proof, fast, and reliable. Just don’t get it if you are in a 150 Mbps Internet Market or below. 

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2 thoughts on “7 Best Compatible Modems For Suddenlink in 2024 [Full List]”

  1. I’ve been 1 1/2 years on suddenlink’s gigabit internet service using the Arris SB8200 broadband modem. I find it to be fast and extremely stable. I’ve only needed to do a power-cycle reset just a few times so far, and even then mostly due to lost connection when suddenlink occasionally upgrades their lines / service. Highly recommended.


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