6 Best Modems For Comcast Xfinity

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There are many factors to consider when choosing a modem for your internet service. Some of these are speed and band. However, the most important thing to consider is Compatibility. This is because not every modem works well with every internet service.

Some of the most important features of a modem are ethernet ports, security, channel bonding, and wireless standard. Considering all these, we have put together this list of the six best modems for Comcast Xfinity.

ARRIS Surfboard SBG8300 Modem-Router Combo

This is an advanced modem that features a full package of wifi connections. It has a modem and a four-port gigabit router and also features the AC2350 dual-band wifi. This feature makes it hard to beat when talking about modems for a smart house, as it brings wifi connection into one awesome package.

The Arris Surfboard SBG8300 supports internet broadband speed of over 10 gigabits per second and WiFi speed of up to 2340 Mbps. To cap it all, it is totally secure with the DOCSIS 3.1 standard, and you can connect it to McAfee’s secure home internet for additional security.

It has four Ethernet portsIt is costly
It runs on DOCSIS 3.1 standard
It is future proof

While no product can be said to be perfect, the SBG8300 is as close as you can get to perfection. It is THE modem-router combo to go for.


Motorola MB8600 DOCSIS 3.1 Cable Modem

This modem is one of the best of its modern compatriots. It supports super-fast gigabit speeds and is equipped with an Ethernet port to connect to your router. It always features towards the top of compatible modem lists due to its unique qualities. 

Users of the Motorola MB8600 get a two-year warranty. It also supports the DOCSIS 3.0 standard and has 32 downstream Channels and 8 upstream channels. You can use the MB8600 with any WiFi mesh or router. Its extremely low latency makes it ideal for streaming and gaming.

It supports DOCSIS 3.1 standardIt has only one Ethernet port
It has extremely low latencyIt is costly
It supports all Xfinity plans


Netgear CM700 Cable Modem

With 32 downstream Channels and 8 upstream channels, it is top of the shelf. If you use the internet for gaming or streaming, you can hardly do better than the Netgear CM700. It has a potential bandwidth of 1.4 Gbps and a download rate of up to 175 Mbps.

However, it is highly unlikely that you will get these speeds in real life. The modem is only compatible with the basic and mid-range Xfinity internet plans. It has one Ethernet port and supports DOCSIS 3.0 standard with backward Compatibility with DOCSIS 2.0.

It is budget-friendlyIt doesn’t support all Xfinity plans
It is perfect for mid-range and low-speed plansIt is not future proof

As a budget modem, the CM700 more than surpasses expectations. You will be getting an excellent modem at an affordable price.

ARRIS Surfboard S33

This modem is an excellent choice for those who have high-speed internet plans, as it supports up to a speed of 1,200 Mbps. Although it is expensive, the features make it worth it.

The Arris Surfboard S33 supports the DOCSIS 3.1 standard and features two Ethernet ports, one 2.5 gigabit and the other 1 Gbps. It supports both DOCSIS 3.1 and 3.0 standards.

It has two Ethernet portsIt is expensive
It supports the 2×2 DOCSIS 3.1 channelsIt is difficult to configure
It supports all spectrum internet plansIt is too much for low-speed plans
It is future proof 

If you are one with very fast internet needs, you can’t do much better than the S33.

Netgear CM500

The Netgear CM500 is on this list for its affordability. Despite being cheap, it supports cable plans of up to 400 Mbps and the DOCSIS 3.0 standard. These qualities make it very enjoyable for the average user who doesn’t need high-speed internet for gaming or streaming.

Another feature of the CM500 is Quality of Service (QoS), a feature that allows you to give priority to some devices’ internet connections over others. This ensures that the tasks that require the best connection get it.

It is budget-friendlyIt is not future proof
It doesn’t support the Spectrum gigabit plan


The CM500 is solid enough to do the job as a budget modem. While inferior to the CM700, it is also cheaper and won’t be a bad choice if it’s what you can afford.

Linksys CG7500

The Linksys CG7500 is on this list due to its sheer simplicity and affordability. It is configured, so all you need to start using it is to connect the coax cable and switch it on. It has a built-in router and four Ethernet ports.

With 24 upstream and 8 downstream channels, it supports a speed of 300 Mbps. It runs in DOCSIS 3.0 standard and supports a theoretical maximum throughput of 1900 Mb/s.

It is easy to set upIt is not compatible with all Xfinity plans
It is budget-friendlyIt doesn’t support DOCSIS 3.1

This is another budget modem, and its simplicity is what sets it apart. Quality-wise, it is a solid modem for the price.


Rather than paying the monthly price to use the Compact Xfinity modem, you can just buy one that will more than pay for itself. This list is made up of modems that satisfy different needs, from cost to speed. There are options for the average user and some for people with heavy internet needs.

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