Best Modem for Xfinity Comcast

Best Modem for Xfinity Comcast – While work from home is a new normal, one can’t rely on low-speed internet. After all, it would help if you had reliable, fast, and consistent connectivity to meet your deadlines and attend online business conferences. Now that you know how an external modem helps you achieve high-speed internet, you’re just a step away from getting hands-on with one of the best options compatible with your ISP (i.e., Comcast by Xfinity.)

There are 100s of options available which might suit you better, but we are not sure about them in terms of durability. Hence, we tested out a limited number of products and came up with a hand-picked list to make it easier for you to select from. So, shall we begin?


1.Netgear C6250-100NAS AC1600

This Netgear model is mature, cheap and reliable. It will work great with Xfinity speeds of Performance Starter, Plus or Pro (up to 150Mbps).

You’ll notice streaming HD videos is much faster with this device. Many users noted that the Netgear was extremely easy to set up and quite straightforward to use.

One hardware feature I like with this model is its USB port (USB2.0) combined with ReadyShare app which allows you to share media files over the network or use it as backup storage device. You can buy a 256GB USB flash drive, connect it to the router and use it as backup storage for the whole family.

2.NETGEAR C6300-100NAS

This is another value for money device which can easily support Comcast Xfinity plans of 150 or 200 Mbps but you get also room for expansions because it can actually go up to 300 Mbps.

It works on DOCSIS 3.0 standard with 16×4 (down/up) bonded channels. What I like about this is its wired connectivity options (4x Gigabit Ethernet ports and one USB) and the pretty good WiFi speed.  It supports AC1750 for a total combined speed of 1750 Mbps on the wireless radio.

It is fully supported on Comcast Xfinity as a combo modem/router device and also supports the newest IPv6 which will replace the older IPv4 internet addressing scheme in the near future.

3.Motorola MG7550

Motorola Internet devices are mostly equipped with the Broadcom chipset which is reliable, secure and high-performance. Broadcom provides also security against Denial of Service attacks which is a plague for Internet connected devices.

The MG7550 is ideal for Comcast Xfinity Blast Pro (up to 250 Mbps) although it can support service speeds of up to 375Mbps, so it is future proof in terms of speed.

With Dual-band AC1900 WiFi speed you have enough bandwidth to support multiple devices in the house.


The Arris SBG10 is a popular product with high ratings for a good reason. It is reliable, works great with Comcast Xfinity and pretty compact to fit anywhere. It can be used for speed plans up to 250 Mbps.

Many people bought this combo device when Xfinity raised their modem rental fee from $10 to $13 per month. If you saved $13/month it means you will recoup your money in less than a year.

It is equipped with 2x Gigabit ports for connecting wired devices such as gaming consoles, smart TV etc.

5.Motorola MG7700

This is another Comcast supported Motorola option. It is ideal for Xfinity Extreme Pro (up to 400 Mbps) and also has room for expansion in speed since the manufacturer recommends this model for service speeds up to 650 Mbps.

The Motorola MG7700 gateway includes a built-in AC1900 dual-band wireless router that includes a firewall and Power Boost capability. This feature amplifies the WiFi signal for larger coverage in the house (users reported very good coverage in 3400 sq.ft area and even on the 3rd floor of the house).

Regarding hardware ports, it includes 4 Gigabit Ethernet Ports to help you connect home wired devices such as your smart TV, desktop computers, gaming consoles etc.

6.NETGEAR Nighthawk Cable

At the time of this writing, the Netgear C7800 together with the Arris SBG8300 (see below) are the only Comcast approved combo devices (modem + router) for Gigabit Xfinity service.

Actually the new model of C7800 shown above supports speeds that are even higher than Gigabit (up to 2 Gig speed).

This model is a highly effective all-encompassing solution to your internet needs that includes a DOCSIS 3.1 cable modem, a high-performance AC3200 WiFi router and a Gigabit switch (all on the same device).

7.ARRIS SURFboard SBG8300

Some months ago, you could hardly find one combo device that supported Gigabit speeds and DOCSIS3.1 protocol. Now, there is a new kid on the block, and is called ARRIS SBG8300.

Together with the Netgear C7800 we have discussed above, these two modem/router combo devices are the only models in the market supporting DOCSIS 3.1 and hence Gigabit Internet Plans. The ARRIS model however is cheaper so you could save some money here.

The SBG8300 is fairly new in the market (released in Mid-2019) and has already received pretty good feedback from customers (although it is not a mature product yet).


Best Modem for Xfinity Comcast – Last year, Comcast raised the rental from $10 to $11, and it can again do it? Although they won’t increase it anytime sooner, what if they did? Besides, the modem/router combo you get for it provides average quality performance.

In some cases, they are incapable of handling gigabit speeds, especially if you are an Xfinity Gigabit or Gigabit Pro subscriber. That’s why we always recommend getting a modem of your own!