Customer Ratings & Reviews

Super high speed output with this device. With my 1GB plan I am getting 1.2 GB/S output and 40 upload with XFINITY. I bought CAT 7 cables to go with it and did the link aggregation feature and have never had internet speeds that are so flawless. I have 25 devices connected to my router with three gaming systems and it never lags the internet.

I brought this modem because of the positive reviews and because I my good experiences with Netgear products. Plus I like to upgrade my modems every few years. Have not had any problems with this modem so far(no rebooting constantly compared to my previous modem). Quality product. Set up was easy as well. Pricey but it does what I brought it for.

Easy installation and fast performed. work with Gigabit very well

I was debating on getting this or something different. The customer service was great I gave a price range and they helped so it wouldn’t exceed. I ended up getting this since they were very honest for what I needed it for very good item my connection was always getting cut off when I was gaming. This helped out a lot I have some lag but that’s because of my provider very minimal to not very noticeable. If multiple people are on at the same time it won’t drop in performance. It does the job for me at least for the reasons I needed it for.

I have no complaints with this modem. It is easy to set up and the internal menu features are intuitive. I have had zero issues with connectivity and customizing the security settings is a breeze.

Comcast upgraded our internet to 400mbps download so we needed a better modem. Decided to future proof a bit and get something for the long haul. Was super easy to set up and immediately got the faster speeds. I’m sure I’m not using all the potential bells and whistles but the speed is consistent and fast which is what I’d expect.

This modem provides higher speeds than our actual COX internet service allows... but it screams and is reliable and ensures we are ready for increased speed needs. We game (PS5 & PS4, computers) and streams services to multiple televisions in our home of 6 members... this reliably fulfills all our needs without any problems.

Easy to install and lives up to it's specs delivering 456 mbs from my Xfinity cable internet subscription. Very few instances of buffering in 4k video streaming.

This cable modem functions extremely well. The ability to aggregate the two links together for theoretical 2gig through put is a nice touch, and great for redundancy. It would be nice if the diagnostics were a little more in depth, but i believe that part is mostly due to the cable company's firmware, rather than the modem itself.

Yes, it pulls 1.2gbps. Keep in mind, you will need a router to split cables if you need a wired connection to computer and wifi router at the same time. This modem only supports one active port at a time.

Upgraded to this from the CM600 (which is also a great modem) to take advantage of my ISP's gig speed internet. Speed is spot on with what is advertised and setup was a breeze. Once it was all hooked up, I called my ISP and gave them the MAC address and in just a few minutes I had blazing fast internet.

Works as expected, easy set up and good quality, blazing fast

I use this with my google nest mesh router. Super fast. Both kids playing their online gaming while I’m streaming Netflix and browsing online. I see nothing slowing down at all. And I don’t have to hear the kids complain about laaaaag. I used to hear that all the time. So I had to man up and upgrade. Completely satisfied.

This modem is top notch! Easy to hook-up, its compatible with most internet providers, great Downloads and upload speed, and the signal range is very good. I have the 800mbps plan and i was getting pretty close to that with this.

I needed the most speed I could get with my new system, this modem allowed me to chance the performance of the new computer system I bought.

Great product, works well. Only issue is the product has four ethernet ports but only one can be used at a time. Not sure why or the purpose but the way it's advertised on the box should be clearer.

Great upgrade from my older Arris. Now get gigabit speeds. Old one only got me 120mbps of the 200+ I was supposed to be getting. Now getting over 320mbps. Haven't had to reboot yet. Had to reboot the old one at least 1 or 2 times a month.

I recently purchased this product based on reviews at Best Buy and elsewhere on the Internet. Remove the coax and power from the old Spectrum modem; connect the coax to the CM1200 and install power. Watch the blinking lights and then power on the router. In my case it is a Netgear A10. Call Spectrum. Agent sees the router does an admin thing. Stays on the line with you to test out connection to router, laptop wifi function, and network streaming to our TV. Everything works. Thank the agent, Say good by and you are off and running. Improved performance immediately observed and measured in wifi performance. Paying for 400mps and actually receiving a high of 492. Streaming is receiving higher measured speeds to Roku at 84mps. I am happy and pleased with the results. It is so nice to see a plan come together and work without any glitches. Blood pressure nice and steady. Watch for sale prices.

We had an old modem from our cable company. Even though we paid for more speed, they hadn't replaced the modem in 8 years. We bought the Nighthawk and speed immediately increased. I'm not a techy in any way but setup was easy and painless. Good move!

I recently upgraded my Xfinity plan to gigabit internet and this modem has delivered blazing performance combined with my Nighthawk AX8 Wi-Fi router with 37 devices connected. I can stream 4K movies on three TV's simultaneously with no strain. The initial setup by connecting and activating through the Xfinity website did not work. I had to talk to Xfinity support and they were great in setting it up manually from their end in about 10 minutes. As other have said, the ports on the back are deceiving and Netgear's documentation could be better. Only 1 port is usable, the other are for link aggregation and an additional internet address if you have more than one service.