Laptop721 is supported by readers like you. When you buy through links on our site, we may earn a small commission at no additional cost to you. Learn more.
Spectrum is one of the leading high-speed cable internet providers across the US. Their plans and service are great, but their equipment for a rental fee isn’t up to the mark. If you are tired of using the average quality modems and routers provided by them and looking forward to buying a new one, we have come up with a list of the best Spectrum compatible modems you shall consider.
It is not just Spectrum that provides average quality or low-quality equipment; many of our readers who have a subscription with Xfinity by Comcast, Cox, WOW!, and other known ISPs have also reported getting average quality modems & routers despite paying high rentals.
With a good modem and router, you could take full advantage of your high-speed plan. But wouldn’t it help if you had a consistent connection and lag-free data flow for watching movies on your Laptop and at the same time, if your son wants to play games, and the daughter wants to finish her homework or Facetime with her friends. Not just that, it would also help them in attending online classes without any issues.
That said, let’s get to the list!
- List of 10 Best Modems for Spectrum
- 1. Best Overall: Motorola MB7621
- 2. Best for Watching Movies: Arris SB6190
- 3. Best 3-in-1 Combo: Arris Surfboard SBG6900AC
- 4. Best for Live Streaming: Netgear AC1600
- 5. Best Wireless Modem for Spectrum: TP-Link N300
- 6. Best for Work From Home: Netgear C3000 N300
- 7. Best for Home: Arris Surfboard SBG6580 N600
- 8. Best for Surfing: Arris SurfBoard SB6121
- 9. Best Under Budget: Motorola SB6120 SurfBoard eXtreme
- 10. Cheapest Option: NETGEAR CMD31T
- Frequently Asked Questions
List of 10 Best Modems for Spectrum
|Arris Surfboard SBG6900AC|
|Netgear C3000 N300|
|Arris Surfboard SBG6580 N600|
|Arris SurfBoard SB6121|
|Motorola SB6120 SurfBoard eXtreme|
A small investment in a modem and router bought online can save you a lot of hassle. The list is compiled after immerse research by our team. We took several factors into account and tested over 21 different modems and even modem/router combos. Then we curated this handpicked list of Spectrum-supported modems. Feel free to go through it and get the best suitable option for your needs.
1. Best Overall: Motorola MB7621
If you are currently persisting with a Spectrum-powered, cable internet service plan, we would recommend you purchase a moderately powerful modem, for getting rid of the recurring rentals. While there are quite a few standalone Spectrum approved modems to consider, the Motorola MB7621 happens to be one of our favorites, courtesy of the innovative technologies and highest possible levels of router compatibility.
From a structural perspective, the Motorola MB7621 trumps some of the contemporaries courtesy of the well-ventilated chassis. Besides, the upright layout readily minimizes the structural footprint. While the physical dimensions are in line with user expectations, our experts were particularly impressed with the five integrated LEDs, precisely included for status reporting.
The space-saving layout isn’t the only good thing about the minimalistic modem as even the internals are subtly protected with surge circuits, to avoid power-based anomalies. At 1.915 pounds, the Motorola MB7621 is on the heavier side for a standalone modem.
As far as the networking technologies and standards are concerned, the Motorola MB7621 persists with the DOCSIS 3.0 enhancement, bolstered further by the 24 x 8 channel bonding support. Regardless of the constant speculations concerning the DOCSIS 3.0 and its significant speed improvements over the DOCSIS 2.0, it is the 24 downstream and 8 upstream channels that make all the difference. The channel segregation allows you to reach theoretical download speeds of over 1Gbps.
When it comes to the upload speeds, the 8 upstream channels allow you to reach close to 246Mbps, under ideal circumstances. However, as tested by our experts, we could reach real-time download speeds of almost 600Mbps, making the Motorola MB7621 suitable enough for almost every mid-range Spectrum plan. Despite allowing you to reach speeds that are 24 times better than the DOCSIS 2.0, this modem is still backward compatible, provided you end up with obsolete connectivity.
Furthermore, the Motorola MB7621 is also compatible with a handful of other ISPs, including Comcast Xfinity, Spectrum, COX, and more. Besides, you also get support for IPV4 and IPV6 standards, as a part of the pre-existing dual-stack. Other structural innovations include the availability of the solitary Gig Ethernet port, which allows you to reach better-wired speeds, provided the ISP package permits the same. As far as the internals are concerned, the Motorola MB7621 features a Broadcom chipset, best known for the innovative circuitry and the support for digital tuner and full band network capture.
Lastly, setting up this Spectrum-supported modem is quite easy as it fits right into any given home setup, provided you have the right router in place. Therefore, if you are interested in a perfectly priced cable modem for your Spectrum ISP packages, the Motorola MB7621 comes forth as the most reliable inclusion, supporting high-speed streaming, mesh network compatibility, and latency-free gaming.
- DOCSIS 3.0 technology is fast
- Bolstered with an integrated digital tuner
- 5 indicative LEDs
- Exceptional compatibility
- 24 x 8 channel bonding helps you reach decent speed limits
- Solitary Ethernet port
- Not suitable for Gig ISP plans
2. Best for Watching Movies: Arris SB6190
It is easy to set up and not much of a hassle. You just need to log in to your ISP’s portal and activate it. Your modem starts running within minutes.
The Arris Surfboard SB6190 is up for grabs. And why not? You can now surf faster and also save on that precious penny. This cable modem running on DOCSIS 3.0 is great for high-speed internet plans giving steady 1.4Gbps download and more than 250Mbps upload speeds in the lab.
The SURFboard SB6190 is a modem-only device and is compatible with most U.S. service providers like Cox, Spectrum, and Comcast Xfinity amongst others. It is equipped with a 1 Gigabit Ethernet port that you can easily connect to a Wi-Fi router so you don’t have to worry even if you have a gigabit plan.
You can now watch all your favorite TV shows and also play high-end games on a laptop, without interruption with 32 x 8 channel technology. Not only is it great for 4K Ultra HD video streaming and VR gaming, but it is also great for multi-tasking.
It also comes with a 2-year warranty. You have the added benefit of controlling it through mobile apps. There is a setup wizard, Wi-Fi manager, and parental control as well. You have total control over your modem now.
- Your hardware cost comes down
- Can handle high internet speeds
- Can accommodate 2-3 users simultaneously
- Consistent and reliable
- Easy to set up
- Chip is faulty
- Puma 6 chip used is prone to be latent
- Lags while online gaming
3. Best 3-in-1 Combo: Arris Surfboard SBG6900AC
The Arris Surfboard SBG6900AC Cable modem & Wi-Fi router is the latest offering from Arris. This device uses the DOCSIS 3.0 platform. The other features include a 1900Mbps Wi-Fi router and 4-port Gigabit Ethernet ports.
The SBG6900AC is a 3-in-1 product. It is the most powerful 16 x 4 channel modem in the SURFboard lineup. Now, brush aside your worries and your monthly cable bills. Equip your home network with the latest technology.
It is compatible with major U.S. Cable ISPs like Xfinity, Charter Bright house, and many others. You can now watch videos uninterrupted and with less buffering. There is no lag when you are gaming with friends.
The world’s number one is almost 16 times faster than DOCSIS 2.0. You get the highest speeds with a fast download of 686Mbps and an upload of 131Mbps, making it one of the best cable modem router combo for Spectrum internet. Thus, you get to save money on this all-in-one.
The Surfboard can be just plugged in and started. It is compatible with most OS. It carries a limited period warranty of 1 year on both parts and labor.
- Easy installation
- Excellent Wi-Fi coverage
- Fast speeds
- Reliable for gaming and streaming
- Great online assistance
- Complicated user interface
- Hidden settings
- Poor DNS
- Need to restart it daily
- Keeps buffering
4. Best for Live Streaming: Netgear AC1600
It is ideal for streaming videos on platforms like Twitch, playing high-bandwidth online games, and downloading heavy files from the internet.
The Netgear AC1600 WiFi is a new age cable modem and Wifi router. It is compatible with the top U.S. Cable service providers like Cox, Spectrum, and Comcast.
This 3-in-1 cable modem is paired with an AC1600 Wifi router and a 2 Gigabit wired switch.
You will get up to 680 Mbps download speed and 122 Mbps upload and dual-band wifi speeds. It is suitable for plans up to 300 Mbps. You get 16 times faster internet speeds, thanks to almost the latest DOCSIS 3.0 platform.
The Netgear AC1600 comes with the NETGEAR Genie app, parental controls, and content filtering functions. You can easily manage all of these from your mobile device.
Do not allow your local cable vendor to fleece you. Own your cable modem router and see the difference. An added advantage is the guest network. You can now show hospitality, yet keep a check on what and how much your guest surfs or downloads.
You can also connect your gaming console or computer via Gigabit Ethernet and get 10 times faster internet speed. It is good for medium to large properties.
- Set up is easy
- Reliable brand
- Range is excellent
- Great for Comcast customers
- Best for rural areas
- Wi-Fi signals drop frequently
- Becomes unresponsive very often
5. Best Wireless Modem for Spectrum: TP-Link N300
Installing this TP-Link N300 modem shouldn’t be a problem for anyone, regardless of whether you understand much about modems or not. The box comes with a good set of introductions and all we needed was to plug it in.
This is one of the most user-friendly modem-router combos we have come across. The interface itself is quite good. Additionally, you have a website where you can change certain settings. The modem allows a separate network for anyone visiting your home. You can also set a limit on how much data the guest is allowed to use. with 8 x 4 channels at hand, there never is any lag.
The website also allows you to check up on DCIM numbers, the open pathways, and such. It allows for a good download and upload speed of 343 Mbps and 143 Mbps. We tried watching Netflix, Youtube videos at the same time while uploading large files and it worked well. Of course, a little of the speed depends on your ISP provider.
The only thing that we found disappointing is that the Wi-Fi can get disconnected after a couple of days.
- Has a separate network for guests
- The user interface is good for setup
- Doesn’t have external antennas
- Can only stand vertically
- Speed is lower when using wifi than wired
- Wifi gets disconnected a lot so you have to reset it often
6. Best for Work From Home: Netgear C3000 N300
If you don’t know what dual-band means, it’s when you’re trying to connect to the wireless network. You will see options for two signals. You can set a password for each signal. On this modem-router combo, there is the 2.4GHz and 5GHz band connection option.
The 2.4GHz is a little slower, which is expected since it is usually the more popular signal. The 5GHz is predictably faster. However, we found the range to be shorter for this one. 8 x 4 channels are offering sufficient slots for smooth data flow.
With 340 Mbps upload and 300 Mbps download speeds during our lab tests, this Docsis 3.0 device is quite fast. It’s also a surprisingly reliable option for professionals who are working from home. We have yet to face disconnection for a long time though if you do overload the wifi, it goes out for 5 min.
The website-based setup is fairly easy. There’s the option for parental control and a separate network for guests. One thing that we did find disappointing is that it’s not possible to connect to a VPN with this one.
- Setup is really easy
- Good speed
- Range is relatively good
- Wifi gets overloaded easily
- Has only 2 LAN ports
- A little on the expensive side
7. Best for Home: Arris Surfboard SBG6580 N600
This Docsis 3.0 platform device is very easy to set up and install. 8 x 4 channels are enough to run a dozen data-guzzling devices with ease.
The material quality of this router is sturdy and that makes it durable in the long term.
This modem-router offers 343 Mbps download and 131 Mbps upload consistently. By choosing this device, you also avoid paying the rental fees and in a few months, this modem will pay for itself.
Now, many websites are blocked by default on this router. When browsing, the default security has to be turned to low so that it is recognized by the device. This is quite tricky and needs a better resolution from Arris.
Also, the range of the router is quite narrow and the signal weakens constantly. While there is a significant drop, is suitable only for home usage.
Sometimes, the page also takes a lot of time to load indicating that it is time for a restart.
- Intuitive user interface
- Easy to install
- Requires constant restarting
- Small range
8. Best for Surfing: Arris SurfBoard SB6121
With cable companies charging a hefty rental for the modem, you can save a significant amount by buying your own.
Choose the Arris SurfBoard SB6121 to cater to the ever-growing internet usage across homes and offices. It has 4 x 4 channels allowing many users to log in with no problem.
It is fairly easy to install and set up this Docsis 3.0 modem without the aid of a customer support executive.
It offers a high-speed download of 343Mbps and an upload of 131Mbps. You can almost instantly download videos, stream movies, and browse the internet seamlessly.
The build quality of this modem is quite sturdy and reliable. It can easily last you a few years with medium to heavy usage daily.
However, this modem loses connectivity in ranges greater than 30 feet and there may be a significant lag. Hence this is more suited for home use or confined office spaces.
Also, with the signal strength flickering, the device needs constant restarting to get it up to speed which is a bit troublesome.
At the price point of $89, this is a great value for money deal.
- Great value for money
- Easy to install
- Requires constant restarting
- Connectivity is lost in longer ranges
9. Best Under Budget: Motorola SB6120 SurfBoard eXtreme
One of the things that annoyed us a little was the manual of Motorola SB6120 SurfBoard. The instructions for network setup weren’t what you would call user-friendly. The installation CD for this modem only has information on where to plug the wires in, which is something most people can figure out on their own.
The speed is quite good at 150 Mbps download and 90 Mbps upload. It is not blazing fast but gets the job done. The SB6120 is Docsis 3.0 tech but with 4 x 4 channels, which allow many devices to log in. While the internet connection is always partly dependent on your cable provider, for the most part, it’s capable of giving high-speed connections.
There is also the issue with network interference. If you have a wifi router compatible with Spectrum in your home, we recommend maintaining a 4 feet distance between the modem. The indicator light does a good job of sent and received negotiation from the cable.
There are times we have seen the modem lose connection on its own but it’s only for a short while.
- Setup is easy
- Speed unexpectedly faster than specified
- Stays cool due to the air vents
- The instruction guide is nowhere near helpful
- Expensive than models of similar range
- Some issues with DHCP configuration
10. Cheapest Option: NETGEAR CMD31T
The NETGEAR CMD31T is quite easy to use. It’s pretty much about plugging it in right. Of course, you will have to take some help from your ISP to activate the modem but other than that, everything can be done on your own.
The manual sent with the modem though wasn’t something we appreciated. We wouldn’t even have to call our ISP if the instruction guide had clear details. As this one used to have Docsis 2.0 and we have used it before, we can tell the 3.0 version works way better. It’s fast with 4 x 4 channels.
We downloaded and streamed videos and movies on Netflix, Youtube, etc without any hitch. We have also uploaded huge files containing music, videos, and other documents quickly. The download and upload speeds of 150Mbps each are quite close to each other.
The lights flash when someone is making use of the internet. However, if it’s not in use and there are still the lights flashing, it means it’s asking you to change the password. This happens when someone logs you out on its own. So, the connection issue bothered us a little.
On the other hand, we are quite happy with the 2 years guarantee. The customer service has been quite helpful with any small issue we’ve faced.
- Good price
- On the small side
- Easy to use
- Doesn’t have a router
- Manual isn’t good
- Sudden connection cut off
Frequently Asked Questions
Which is the cheapest cable modem for Spectrum?
At only $45, the Netgear CMD31T is a value-for-money device. It is plug-and-play and requires no setup at all. The download speed is limited to 150 Mbps, but that is not slow at all. You could easily use it for the 100-200 Mbps plans that Spectrum offers. The design is quite sleek, and it has a low price that blends with the decor.
Which is an affordable modem router combo?
The TP-Link N300 is a modem and router that has a reasonably high download maximum of 343 Mbps and supports 802.11a/b/g/n. The signal is stable up to almost 150 feet, and it has a 2-year warranty on top of a very affordable price.
Which is the most suitable high-performance modem router for Spectrum?
In our tests, the Arris SURFboard SBG6580 popped out as a device with very decent specs that were capable of DOCSIS 3.0 and had 8 x 4 channels capable of 343 Mbps download and 131 Mbps upload. The Wifi was spread across 2.4/5.0 GHz and capable of 802.11n. It works really well t connect your storage media through the 4-Port Gigabit Ethernet.
Which is the sleekest of these devices?
When it comes to aesthetics, the Netgear AC1600 is undoubtedly the best of the lot. It stands vertically on a tabletop and slants back slightly. The front end is an uncluttered black surface with green indicator lights for power and LAN.
We found the Motorola MB7621 to be the best bet. Affordable at sub-$100 and with a 1Gbps download speed, it has clean lines and is easy to set up. 24 downstream and 8 upstream channels make it versatile, and you can at ease connect several data-hungry devices with no fear of stutter and lag.
A very close rival to it is the Asus CM-32. Compatible with Wi-Fi 802.11 b/g/n, it is effortless to install through the Netgear Genie app. You have full parental control with the home network manager. A device-to-device file transfer uses the patented Turbo-Transfer technology which is much faster than rivals.